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26 Oct
Skylight Cleaning and Maintenance in the UAE

Skylight Cleaning and Maintenance in the UAE: A Complete Guide

Author skylights Categories Al-Mamary Blogs

Skylights bring natural light into homes and commercial buildings, creating brighter and more inviting spaces. However, in the UAE, dust, sand, and high temperatures can quickly leave skylight surfaces dirty, and when rain does fall, it often mixes with settled dust and leaves muddy streaks behind. Over time, this reduces the amount of natural light entering a building. Regular skylight cleaning helps maintain clear views, preserve the appearance of your skylights, and identify potential maintenance issues before they become more serious.

Knowing how to clean skylights properly is just as important as cleaning them regularly. Using the wrong cleaning products or tools can scratch the surface, damage protective coatings, or affect seals and other components. In this guide, we’ll explain how to clean glass and polycarbonate skylights, which tools and skylight cleaning solutions to use, what skylight maintenance involves in the UAE’s climate, and when to consider a professional skylight cleaning service.

Why Do Skylights Need Regular Cleaning in the UAE?

The UAE’s climate is tough on skylights, which makes regular skylight cleaning in the UAE more important than in milder regions. Here’s why:

  • Dust and sand buildup: Fine dust and airborne sand settle on skylight surfaces and form a cloudy film that blocks natural light. When rain does fall, it mixes with this layer and leaves muddy streaks that become harder to remove the longer they stay.
  • Higher reliance on artificial lighting: As less daylight passes through a dirty skylight, indoor spaces become darker and lights end up switched on more often, reducing one of the main benefits of having a skylight in the first place.
  • Humidity and coastal conditions: In coastal cities such as Dubai, Abu Dhabi, and Sharjah, humidity and salt in the air help dust cling to surfaces, leaving a sticky residue that does not simply wash away.
  • Risk of surface scratches: High temperatures can bake dirt onto the surface, and sand particles are abrasive. Wiping a skylight dry or scrubbing hardened grime can scratch glass or polycarbonate, so regular, gentle cleaning is safer than occasional heavy scrubbing.
  • Early detection of maintenance issues: Each cleaning is a chance to check for cracked panels, damaged seals, loose flashing, or blocked drainage channels. Catching these early is a key part of skylight roof maintenance and helps prevent leaks and costly repairs.

Read more: How Do Skylights Save Energy and Reduce Electricity Bills?

How Often Should You Clean Your Skylights?

In the UAE, most skylights should be cleaned on the outside every 3–6 months, and more often in high-exposure locations. The right frequency depends on where the skylight is installed, how exposed it is, and the type of skylight you have.

As a general guideline:

  • High-exposure locations (every 1–3 months): Skylights near construction sites, open desert areas, busy roads, or the coast collect dust and residue faster. Large commercial skylights in these areas often benefit from a scheduled skylight cleaning service.
  • Low-exposure locations (every 3–6 months): Residential skylights in sheltered or less dusty areas usually need less frequent cleaning.
  • After sandstorms or rainfall: Check the surface for heavy dust, muddy streaks, or water stains and clean it if needed.
  • Interior side (once or twice a year): The inside of a skylight collects far less dirt and usually needs only occasional dusting and wiping.

These intervals are general recommendations, so always follow the manufacturer’s care instructions for your specific skylight. Combining each cleaning with a quick inspection is also an easy way to keep up with skylight maintenance.

How to Clean Skylights Step-by-Step

Knowing how to clean skylights properly helps remove dust, stains, and residue without scratching the surface or damaging protective coatings. The process differs slightly between the inside and outside of the skylight, but in both cases, gentle products and the right tools make all the difference.

Cleaning Skylights from the Inside

The inside surface of a skylight mainly collects dust, fingerprints, and condensation marks over time. Follow these steps to clean it safely:

  1. Prepare the area: If you have an opening or retractable skylight, make sure it is fully closed and switch off its power supply. Move furniture away from the area below and place a towel or protective sheet on the floor to catch drips.
  2. Remove loose dust: Use a soft microfiber cloth or a soft-bristled brush to remove dust before applying any liquid, so it does not spread across the surface.
  3. Prepare a gentle skylight cleaning solution: Mix lukewarm water with a small amount of mild, non-abrasive soap. Check the manufacturer’s recommendations first, especially if the skylight has a special coating.
  4. Wipe the surface gently: Dampen a microfiber cloth with the solution and wipe in smooth, even strokes. Avoid applying excessive pressure, particularly around the edges and seals.
  5. Remove residue: Wipe the surface with a separate cloth dampened with clean water to remove any remaining soap.
  6. Dry the skylight: Use a clean, dry microfiber cloth to prevent water spots and streaks.

For high skylights, use a stable ladder or an extension pole rather than standing on furniture. If you notice condensation building up regularly on the inside, it may point to a ventilation or seal issue worth checking.

Cleaning Skylights from the Outside

The exterior surface is exposed to dust, sand, bird droppings, and weather-related residue, which build up quickly in the UAE.

Before you start, remember that safety comes first. Never walk, kneel, or lean on a skylight, as the panels are not designed to support body weight. Work from a safe position on the roof, use proper fall protection, and if the skylight is high, on a steep roof, or hard to reach, contact a professional skylight cleaning service instead.

  1. Choose the right time: Clean early in the morning or late in the afternoon when the surface is cool. Water on a hot surface evaporates too quickly and leaves streaks, and cold water on hot glass can cause thermal stress.
  2. Rinse off loose dirt: Gently rinse the surface with low-pressure water to loosen dust and sand before wiping. Wiping sand off a dry surface is one of the most common causes of scratches.
  3. Soften stubborn deposits: Soak bird droppings and dried mud with water for a few minutes until they soften. Do not scrape them off.
  4. Apply a suitable skylight cleaning solution: Use lukewarm water and a mild, non-abrasive cleaner approved for the skylight material. Avoid harsh chemicals, abrasive pads, and high-pressure washing unless the manufacturer allows them.
  5. Clean the surface carefully: A soft microfiber mop or soft-bristled brush on an extension pole is the safest skylight cleaning tool for most exterior surfaces. Work gently without pressing on the panels.
  6. Clear the frame and drainage: Remove sand and debris from the frame, drainage channels, and weep holes so water can drain freely.
  7. Rinse, dry, and inspect: Rinse away all cleaning solution, then dry with a soft microfiber cloth (a rubber squeegee can be used on glass). Check for cracks, damaged seals, or water pooling around the frame.

Glass and polycarbonate skylights do not always respond to the same products, so it helps to know the difference before you choose your cleaner.

How to Clean Glass vs. Polycarbonate Skylights

The best way to clean skylights depends on their material, as glass and polycarbonate have different cleaning requirements. Using the right products and tools helps remove dirt without scratching the surface or damaging protective coatings.

  • Glass skylights: Glass is relatively durable and can be cleaned with lukewarm water and a mild, non-abrasive skylight cleaning solution or an ammonia-free glass cleaner. Use a soft microfiber cloth or a rubber squeegee, then dry the surface to prevent streaks. For hard water spots, a diluted white vinegar solution usually works well. If the glass has a special coating, check the manufacturer’s instructions before using any cleaner.
  • Polycarbonate skylights: Polycarbonate scratches more easily than glass, so rinse it with plenty of clean water to loosen dust and sand before wiping gently with a soft microfiber cloth. Use only mild soap and water or a cleaner approved by the manufacturer. Avoid ammonia- or alcohol-based glass cleaners, solvents, abrasive sponges, scrapers, and paper towels, as they can damage the surface or its protective coating. The same care applies to acrylic sky domes.

For both materials, always follow the manufacturer’s cleaning instructions. Choosing the right skylight cleaning solution helps preserve the surface, maintain clarity, and prevent unnecessary damage during routine cleaning.

Explore: Glass vs Polycarbonate Skylights: Pros, Cons & Which to Choose

Skylight Maintenance Checklist: 5 Key Things to Check

If you are wondering how to maintain skylights, the answer goes beyond cleaning the surface. Regular skylight maintenance means inspecting the main components to catch early signs of wear, prevent water leaks, and keep the skylight working properly:

  • Seals: Check the seals around the skylight for cracks, gaps, or signs of deterioration. Water stains on the ceiling around the skylight or condensation between double-glazed panes often point to a failing seal. Have damaged seals repaired or replaced as soon as possible.
  • Flashing: Inspect the flashing around the skylight frame for loose sections, corrosion, or visible damage. Properly maintained flashing helps prevent water from seeping into the roof.
  • Drainage: Clear sand, dust, and debris from drainage channels and weep holes so water does not collect around the skylight, particularly after rainfall.
  • UV damage: Look for discoloration, cloudiness, brittleness, or cracking that may indicate damage from prolonged sun exposure. Polycarbonate panels and protective coatings may need particular attention.
  • Moving parts: For retractable and vented skylights, check hinges, tracks, and opening mechanisms for sand buildup, unusual noises, or restricted movement, and make sure any rain sensors are clean and working. Clean and lubricate components according to the manufacturer’s instructions, and leave motor or electrical issues to a technician.

Including these checks in your routine skylight roof maintenance helps you spot potential problems early. If you notice persistent leaks, damaged structural components, or malfunctioning opening mechanisms, consult a qualified professional for inspection and repairs.

When to Call a Professional Skylight Cleaning Service

Routine skylight cleaning is manageable for small, accessible skylights, but some situations call for professional equipment and expertise. A professional skylight cleaning service helps protect the skylight from damage and ensures the work is carried out safely.

  • Safety concerns: Skylights on steep roofs, at significant heights, or in hard-to-reach locations can be dangerous to access, and falls through roof glazing are a well-known risk in roof work. Professionals have the right safety equipment and training to work in these areas without putting themselves or others at risk.
  • Large and commercial skylights: Large glass roofs and commercial skylights often need specialized equipment and techniques to clean extensive surfaces evenly without causing damage.
  • Built-in cleaning systems: For large or hard-to-reach skylights, a motorized cleaning system provides safe access to both the inside and outside of the skylight, making it easier to clean the glazing and carry out maintenance without stepping onto the roof structure.

Frequently Asked Questions About Skylight Cleaning and Maintenance

Here are answers to common questions about keeping skylights clean, preventing damage, and maintaining their performance over time:

  • What is the best way to clean skylights without leaving streaks?

Use a soft microfiber cloth, clean water, and a suitable non-abrasive cleaning solution. Clean the surface when it is cool, rinse away any residue, and dry it with a clean microfiber cloth to minimize streaks and water spots.

  • Can pressure washing damage a skylight?

Yes. High-pressure water can damage seals, force water into joints, or harm certain panels and coatings. Use a regular garden hose with gentle water pressure instead, and follow the manufacturer’s recommendations for your specific skylight.

  • Why does my skylight look cloudy even after cleaning?

Cloudiness after cleaning is often caused by leftover soap or mineral residue, which a thorough rinse with clean water usually removes. If it persists, it may come from condensation between glazing layers, scratches, surface deterioration, or a damaged protective coating. In that case, have the skylight inspected to identify the cause.

  • Can skylights be cleaned during summer in the UAE?

Yes, but timing matters. Clean early in the morning or in the evening, when the surface is cool and the sun is less intense. For professional cleaning teams, the UAE’s annual midday break also prohibits outdoor work under direct sunlight from 12:30 pm to 3:00 pm, typically from mid-June to mid-September.

Clearer Skylights, Brighter Spaces

With the right products and routine checks, regular skylight cleaning in the UAE keeps your skylights clear and in good condition for years.

Established in the UAE in 1996, Al-Mamary specializes in skylight manufacturing and has completed more than 700 projects across the Middle East and North Africa, including villas, schools, shopping malls, and commercial buildings. In addition to custom-designed skylights, the company offers a motorized cleaning system designed to make skylight cleaning and maintenance safer and more accessible from both the inside and outside.

Whether you are planning a new skylight project or looking for a more practical way to maintain an existing one, contact the Al-Mamary team to discuss your project and explore the right solution for your building.

Find out: Operable Skylights vs Fixed Skylights: Pros, Costs & How to Choose

Learn about: Skylight Installation: Your Complete Guide to the Process & Benefits

13 Sep
Vented Skylights

Vented Skylights: What Are They and How Do They Work?

Author skylights 1 Comment on Vented Skylights: What Are They and How Do They Work? Categories Al-Mamary Blogs

Vented skylights are one of the most notable types of skylights, thanks to the way they work. They are highly sought after by homeowners, business owners, and property managers who want to elevate their spaces with natural daylight and enhanced ventilation. 

So, what is a vented skylight exactly? How does it work? And what are the benefits of vented skylights? Continue reading our comprehensive guide to learn how these skylights can help enhance your space’s functionality and overall experience.

What is a Vented Skylight? 

A vented skylight is a type of skylight that can be opened in different ways to allow natural air to enter the space while letting stale air escape, providing natural ventilation and enhanced air quality. These skylights play a crucial role in improving the overall indoor environment, especially in spaces that require regular or constant ventilation like offices, kitchens, bathrooms, and others. 

Also known as a vented skylight window, this type of skylight combines the benefits of natural daylight with improved airflow and ventilation. More on the benefits below. 

Benefits of Vented Skylights

Vented skylights offer you a wide range of benefits that make your space look better, feel fresh, and operate much easier and more efficiently than without them. Here are some of the benefits of vented skylights that you can’t miss out on, showing you how they elevate your place—whether it’s residential, commercial, or industrial:

1) Natural Ventilation 

While this is the most obvious benefit, it can be the biggest motivation for getting a vented skylight. Since they can be opened, vented skylights create a large or small opening—depending on the design—to allow stale air to leave the room or building and fresh air to enter.

This alone can create excellent natural airflow, especially when the skylight is installed in the proper place and orientation. The airflow can be enhanced even further when the skylight is combined with other windows and openings. 

2) Passive Cooling 

Another benefit of vented skylights is their contribution to passive cooling under suitable weather conditions. By opening the skylight, you allow the hot air to leave the space and let the cooler air enter. This continuous airflow helps regulate indoor temperature, helping keep indoor spaces cool and the overall environment comfortable.

It is important to note that you can benefit from this natural cooling effect only if the skylight is installed and positioned properly. The climate and weather conditions also play a crucial role, as passive cooling depends on the temperature outside. 

Generally speaking, the outdoor temperature must be lower than the indoor temperature for this cooling effect to take place, such as during cool mornings and evenings. 

3) Humid Control 

Moisture accumulates quickly in the air inside high-humidity areas and eventually turns into water droplets when meeting cooler surfaces. This is quite common in bathrooms, kitchens, and laundry rooms, other than spas, changing rooms, commercial kitchens, and indoor swimming pools, among others. So, how do vented skylights help with humidity? 

Opening a vented skylight allows humid, moisture-filled air to escape and brings fresh air into the space. This can help prevent or reduce the risk of damage associated with excessive indoor humidity, such as mould growth, dampness, and even damage to fabrics, materials, or machinery.

4) Odour Removal 

Benefits of vented skylights go beyond cooling, ventilation, and humidity control, as they can also play a key role in removing odour build-up inside some places. Think kitchens, utility rooms, commercial kitchens, and even workshops where chemical odour accumulates fast. 

By simply opening the skylight and letting fresh air inside, you significantly reduce odours caused by cleaning, cooking, moisture, and other everyday activities, keeping the overall atmosphere feeling fresh and clean. 

5) Energy Saving 

With all these benefits combined, energy savings and improved efficiency naturally follow when using vented skylights. By relying more on skylights for natural ventilation, cooling, and daylighting, you can reduce the energy consumption of HVAC systems used to mechanically cool and ventilate the space, while also reducing the need for artificial lighting. These skylights help cut energy costs, which is a great benefit for commercial places, public buildings, and even villas. 

Read more: How Do Skylights Save Energy and Reduce Electricity Bills?

Now that you know the benefits of vented skylights, how do they work exactly? What are the mechanisms that enable them to deliver such effective performance? 

How Does a Vented Skylight Work? 

Wondering how a vented skylight works? The core concept behind vented skylights is that they can be opened to allow natural airflow, but how is this achieved? These skylights come in various configurations, with each one of them integrating a specific working mechanism. 

Here are the different kinds of vented skylight configurations and how they work: 

1- Hinged: This is the most common type, and it is opened by lifting one edge outward while the other remains fixed. Some can be opened slightly, while others can open wider depending on their design.

2- Top-Hinged: This vented skylight works quite similarly to the above type. You can open it by lifting the skylight’s lower portion, while the top remains fixed, creating a gap at the bottom. 

3- Center-Pivoted: This configuration works differently, as the skylight rotates around a central axis, meaning that one part of the skylight moves outward while the other moves inward.

4- Sliding: The panels of these vented skylights open by sliding and retracting, creating an opening for airflow. These are also known as retractable skylights. 

5- Louvred: Instead of the entire glass panel opening, individual slats, or louvres, tilt open to allow air to pass through.

That being said, vented skylights for homes can come in any of these formations and styles. Are you considering one of these for your home? A vented skylight may be just the missing piece from your villa! Below is a brief overview of where they can be used. 

Vented Skylights for the Home: Where Can You Use Them

As mentioned previously, these skylights are typically used in places with high humidity and needing consistent ventilation. So, what does that mean for vented skylights for your home? Where can they be installed? 

  • Bathrooms: One of the most obvious ones. Water accumulates and humidity builds up, making the atmosphere unpleasant. A vented skylight can easily take care of that. 
  • Kitchens: One of the busiest spaces in the home that benefit greatly from vented skylights. Not only will they get rid of cooking odours and excessive heat, but they also provide natural, refreshing ventilation. 
  • Bedrooms: While the bedroom may not be particularly humid, having a vented skylight there provides natural ventilation and a pleasant airflow, on top of natural daylight. 
  • Poorly Ventilated Spaces: Think enclosed hallways and stairwells, laundry rooms, attics, garages, and walk-in closets, just to name a few.

If these are some of the places where a vented skylight would be the perfect addition to your home, what are the needed considerations for this next step? Below is what you need to know before vented skylight installation.

Vented Skylight Installation: What to Consider

Vented skylight installation must be carried out by qualified professionals to ensure a proper and safe installation. But first, the following factors should be considered to support proper skylight planning, manufacturing, and installation:

1. Skylight Placement and Orientation 

This refers to where exactly the skylight will be installed—overhead or on the wall—and which direction it should face. Ideally, it should provide maximum daylight without causing overheating while also being positioned where air can easily enter and circulate for effective ventilation.

2. Size and Configuration 

These two elements complement each other—you don’t want to end up with a skylight that is too big or too small, or one that you cannot reach and open comfortably, as that defeats the purpose. Here, you must consider both its size and configuration to ensure optimal performance and ease of use.

3. Structural Elements 

These include the roof or wall’s structure and overall condition, helping determine whether or not they can safely and efficiently support and integrate the vented skylight. If the structure is not in the best condition, installers may need to reinforce it using various methods during installation. 

4. Glazing Materials 

You’ll have to decide between glass and polycarbonate depending on the building’s requirements and local climate. This choice is crucial for overall performance, as it impacts thermal regulation, daylight, durability, energy efficiency, and much more. 

More details: Glass vs Polycarbonate Skylights: Pros, Cons & Which to Choose

5. Ventilation Needs

Recognising how much air the room needs plays a big role in determining the right vented skylight for you. If the place lacks ventilation because there are no windows or minimal openings, it is important to go with a skylight configuration that allows for a bigger opening. But a bedroom with existing windows might need a skylight that opens only slightly. No big opening needed.

Explore now: Skylight Installation: Your Complete Guide to the Process & Benefits

You will be able to determine each one of these factors, among others, with the professional guidance of an experienced skylight manufacturer and installer, like Almamary. 

How Much Does a Vented Skylight Cost? 

There isn’t a fixed price for vented skylights, since their cost depends entirely on many factors, including their configuration, size, glazing material, frame, building requirements, installation needs, and any other aspects that impact how the skylight is planned, manufactured, and installed. By choosing your vented skylight from a trusted skylight manufacturer, you can make sure to get your money’s worth! 

FAQs about Vented Skylights

Here are some of the most common questions and their answers: 

  • Can vented skylights be opened and closed automatically?

Yes, vented skylights can be opened and closed automatically if they are equipped with motorised mechanisms. Meaning? You can open them using a remote control, a wall switch, or even a compatible smart system. 

  • Can vented skylights be installed in existing roofs?

Yes, vented skylights can definitely be installed in existing roofs, provided that the roof’s structural integrity allows for it. If needed, specific reinforcement measures can be taken to strengthen the overall structure and accommodate the skylight installation.

  • What is the difference between a vented skylight and a fixed skylight?

A vented skylight can be opened, so it is also known as an openable skylight, while a fixed skylight cannot be opened, so it functions like a closed window overhead. 

  • How long do vented skylights typically last?

A vented skylight can last between 10 and 20 years, depending on many factors, including maintenance, installation, glazing material, weather conditions, and others.

  • Can vented skylights be fitted with insect screens?

Yes, insect screens can be fitted to many vented skylights, helping prevent insects from entering when the skylight is open. This allows you to enjoy natural ventilation while keeping unwanted pests outside.

Vented Skylights from Almamary

If you want to get a vented skylight for your place—whether it is your home, a restaurant, a warehouse, or any other building—then working with Almamary is your next step. Almamary for Skylights has decades of experience in designing, manufacturing, and installing skylights of all types, including openable and retractable skylights. 

Contact our team now to begin working on your vented skylight. 

03 Sep
How Do Skylights Save Energy

How Do Skylights Save Energy and Reduce Electricity Bills?

Author skylights 1 Comment on How Do Skylights Save Energy and Reduce Electricity Bills? Categories Al-Mamary Blogs

Skylights are known for being energy-efficient roofing solutions that reduce power consumption and energy bills, making them an ideal choice for spaces that require constant lighting as well as cooling or heating around the clock, depending on the climate. 

Skylight energy efficiency proves most useful in places like shopping malls, airports, hospitals, warehouses, and factories, among other public, commercial, or industrial spaces where lighting and temperature control account for a large proportion of energy consumption. 

So, how do skylights reduce electricity bills? How do they save energy? Continue reading this guide to learn about the features and properties that help skylights lower energy use and discover more valuable information about their thermally efficient performance. 

What Makes a Skylight Energy Efficient? Features & Properties

A lot of work goes into making skylights energy efficient, from the initial planning of their shape and orientation to the manufacturing process. In other words, skylights do not simply happen to be energy efficient. Their design incorporates various features and considerations that help optimise energy use and improve overall performance.

So, why are skylights energy-efficient? Here are some of the technical features and properties of energy-efficient skylights:

1. Low-E Glazing

If you are looking into various skylight materials or exploring skylight installation, you may have already come across the term “Low-E glazing,” which stands for Low-Emissivity Glazing. 

In this context, glazing is the transparent material used in skylights that lets natural light into your interior space. When this material, typically glass, is described as low-emissivity, it means that its surface emits less radiant heat, helping provide better temperature control. 

To make the glazing low-emissivity, it is designed with a very thin, almost invisible coating that helps reflect indoor heat back into the building during winter, instead of allowing it to escape. Low-E skylights also help reduce the amount of solar heat entering from outside during summer. 

This way, your indoor place remains cool in the summer and warm in winter, significantly reducing reliance on HVAC systems for heating and cooling. This first feature is very important in designing energy-efficient skylights. 

2. U-Value 

“U-Value” stands for “thermal transmittance” and it measures how much heat passes through the skylight. Unlike low-E glazing, U-value is not a singular feature but rather an overall measure of the skylight’s thermal performance, taking into account various factors, such as: 

  • Glass/glazing: The material type, its thickness, and the application of the low-e coatings all impact the skylight’s U-value. 
  • Number of panes: Glazing provides better insulation when the panes are doubled or tripled, especially when there is insulating gas between them. 
  • Frame: The material and design of the skylight frame also affect heat transfer.
  • Installation: Poor installation can negatively impact thermal performance.

That being said, a skylight with a low U-Value provides better insulation and greater energy efficiency, while a skylight with a high U-value does the opposite. But how does U-value make skylight energy efficiency possible?

With the proper glazing, coatings, installation, and more, the U-value is reduced, meaning that the skylight limits heat transfer through its panes. The end result? Less heat loss in winter and heat gain in summer, minimising the workload on heating and cooling systems and improving energy efficiency.

3. SHGC 

SHGC (Solar Heat Gain Coefficient) measures how much solar heat enters a building through the skylight. A lower SHGC limits solar heat gain, making it useful in hot climates like the UAE, while a higher SHGC allows more solar heat to enter, which is beneficial in colder climates by helping warm the space. In both cases, the proper SHGC rate is crucial to skylight energy efficiency. 

It is important to distinguish between U-value and SHGC; the first measures heat transfer through the skylight, while the latter measures solar heat entering through it. Notably, SHGC is impacted by a variety of aspects, including but not limited to: 

  • Type of Glazing: Different skylight materials absorb, reflect, and transmit varying amounts of solar radiation. 
  • Low-E Coatings: Some low-emissivity coatings can minimise the amount of solar heat passing through the skylight. 
  • Tinting: Tinted glass can transmit less solar radiation through the skylight, depending on its shade and formula. 
  • Design & Orientation: The skylight design, configuration, and orientation have a direct impact on the amount of solar heat that can enter through it, significantly affecting the SHGC measurement.  

So, how does the SHGC rate contribute to skylight energy savings? The proper SHGC rate minimises the need for cooling and heating systems to work continuously to control indoor temperature and keep it at a comfortable level. Therefore, energy-efficient skylights reduce energy bills through a combination of features that achieve the suitable SHGC levels. 

4. Double & Triple Glazing 

Skylight glazing can comprise a single pane, or it can be double glazed or triple glazed. Meaning? A double-glazed skylight has two layers or panes of glass with a sealed space between them, which can be filled with an insulating gas for better insulation. A triple-glazed skylight has three panes of glass and two sealed spaces between them. 

How do skylights save energy, then? Double and triple panes are one of the most effective ways to improve the skylight’s thermal performance and energy-saving capacity. What these additional panes do is create greater resistance to heat transfer, keeping your place cool in summer and warm in winter by reducing heat gain and loss. 

As a result, such double- and triple-glazed energy-efficient skylights lower HVAC demands and help reduce energy bills. 

5. Visible Transmittance (VT)

This aspect is part of the reason why skylights are energy-efficient. Visible transmittance means the percentage of visible light that passes through the skylight’s glazing to illuminate the indoors, and it is determined by laboratory testing of the glazing. The higher the transmittance, the more visible light passes through, so brighter the space is. 

But how does a high VT help skylights reduce electricity bills? 

Skylights with good visible transmittance bring more natural daylight indoors, meaning that you do not need to rely on artificial lighting as much during the day. This is significant in big places that need constant lighting and a pleasant environment, including hospitals, schools, public buildings, shopping centres, and others. 

Now that you know how and why skylights are energy-efficient, it is important to understand how they reduce energy consumption. So, how do skylights save energy? 

How Do Skylights Save Energy? 

How do skylights reduce energy costs? How do the above energy-saving properties and features translate into lowered electricity bills and reduced energy consumption? Now that you know what makes an energy-efficient skylight, here is exactly how it saves you energy: 

1) Natural Daylight 

A skylight’s most prominent function is providing natural lighting. No matter the type of skylight, its shape, or material—it is designed to allow natural daylight to fill in the place. And since skylights are positioned overhead, they distribute light deeply into interiors, illuminating the area more efficiently compared to vertical windows. 

As such, skylights with a high visible transmittance play a major role in reducing reliance on artificial lighting. There is no need to switch to electrical lighting when the entire place basks in sunlight with no hues or harsh glare. As a result, skylights reduce electricity bills and minimise operational costs. 

2) Reduced Cooling Energy

Skylights can be designed to allow an abundance of natural light to come inside while minimising solar heat gain, which is a major advantage in hot climates like the UAE and other GCC countries. Such skylights integrate proper glazing, suitable SHGC rates, and insulation mechanisms like double- or triple glazing and insulating gas. 

With the right features and mechanisms, skylights do not let much heat pass through them. Consequently, HVAC systems do not need to work excessively to keep the place cool, reducing energy consumption and bill amounts. 

3) Passive Solar Heating

Skylight energy efficiency is not limited to daylight and cooling performance only, as it plays an important role in heating as well. Skylights installed in colder locations can let sunlight inside, which provides useful heat to the interior. With the proper insulation and SHGC, these skylights help maintain a warm and comfortable temperature through passive solar heating. 

How does this contribute to skylight energy savings? 

Instead of relying entirely on heating systems, skylights can help warm the space by harnessing the sun’s natural heat and energy, reducing energy consumption and heating costs. 

4) Natural Ventilation

You may still be thinking about how to make skylights more energy-efficient. In this case, you can choose to install an operable skylight (also known as a retractable skylight) to further elevate your skylight energy savings. 

Installing an openable skylight allows you to open it either manually or electronically to let stagnant air leave the place and let fresh air in. This creates a natural airflow, ventilating your space thoroughly while reducing dependence on HVAC systems and energy costs. 

Explore now: What is an Operable Skylight? Advantages and Reasons to Install One

FAQs about Skylight Energy Efficiency 

Here are some further insights about skylights and their energy efficiency: 

1- Are skylights suitable for every climate? 

Yes, skylights are suitable for hot and cold climates, as they are designed and manufactured to suit climate conditions like excessive heat, strong rain, potential falling debris, and other factors. Skylights also integrate various features that help maintain suitable indoor temperatures, taking into account external weather conditions.

2- Can skylights cause a room to become too hot?

Yes. Skylight shape, material, size, and position are all factors that determine how well it can keep the room warm or cool. So a poorly selected or positioned skylight can surely make a room too hot. 

3- Do skylights require regular maintenance to remain energy efficient?

Yes, regular maintenance is essential for skylight energy efficiency, which can include cleaning glazing material, inspecting frames and seals, and checking for cracks, leaks, or other signs of damage.

4- Are skylights a good investment for commercial buildings?

Yes, installing a skylight is a great investment for commercial buildings, especially if you want to save costs in the long term. While the upfront price can be high, skylights reduce energy costs for ventilation, lighting, cooling, and heating, proving to be energy-efficient and cost-efficient in the long run. 

5- Are skylights more energy-efficient than windows?

Skylights can be more energy-efficient than windows in certain applications, particularly when they are designed and positioned to maximise daylight distribution. 

Energy-Efficient Skylights from Almamary 

Almamary for skylights is a trusted manufacturer and installer of commercial and residential skylights in the MENA region. With decades worth of experience, Almamary’s team designs, builds, and installs energy-efficient skylights to help reduce energy costs while also allowing natural light in. 

Almamary’s skylights include structural skylights, coloured skylights, operable skylights, and much more. Whether made of glass or polycarbonate, shaped like a pyramid or a dome, Almamary’s skylights will surely elevate your place, maintain comfortable temperatures, and reduce energy consumption. 

Consult our team to begin. 

Learn more: Coloured Skylights: Key Features, Installation, and Design Ideas

Further insights: Commercial Skylights: How to Choose the Best One? 

More details: Glass Skylights: Benefits, Types, and Installation Guide

28 Jul
Al-Mamary Skylight

Operable Skylights vs Fixed Skylights: Pros, Costs & How to Choose

Author skylights Categories Al-Mamary Blogs

Choosing between an operable skylight and a fixed skylight is not always a straightforward process. Each skylight type has its strengths and considerations, making them best suited for different spatial requirements, applications, and preferences. 

That being said, our guide provides you with a comprehensive breakdown of opening vs non-opening skylights, their pros and cons, and which is best for you—assisting you in making the right choice with confidence and ease. 

What is an Operable Skylight? 

Operable skylights, also known as opening or retractable skylights, are roof skylights that can be opened either manually or automatically, depending on how they operate. They allow natural light to fill the space while also promoting natural ventilation by releasing stale indoor air and letting fresh outdoor air circulate throughout the building.

  • How Do Operable Skylights Work? 

Retractable skylights come in two types: motorised (electric) and manual. Electric models operate via a wall switch or remote control, while manual models are opened and closed using a handle, crank, or control rod.

Discover more: What is an Operable Skylight? Advantages and Reasons to Install One

What is a Fixed Skylight? 

A fixed skylight, also known as a non-opening skylight, is a roofing solution that is permanently sealed and cannot be opened. The main function of this skylight type is to illuminate the indoors with sunlight without contributing to natural ventilation. Fixed skylights come in various sizes and shapes, all of which remain closed at all times. 

  • How Do Fixed Skylights Work? 

Fixed skylights have no opening mechanism, as they remain permanently closed. They simply allow natural daylight to pass through their transparent panels, with the light either diffused or kept clear depending on the material used.

Learn more: Best Skylight Materials: Types & How to Choose the Right One

Opening vs Non-Opening Skylight: Pros and Con

To fully leverage the benefits of skylight installation, you should carefully explore the pros and cons of opening vs. non-opening skylights so you can decide which is best for you:

Advantages of Opening Skylights

Wondering if you should install a skylight that opens? Below are some of the advantages of opening skylights: 

  • Natural Ventilation 

Retractable skylights’ biggest advantage is natural ventilation. When opened, they release hot air trapped near the ceiling while drawing fresh air into the building. When paired with open windows or doors, they create continuous natural airflow.

  • Improved Indoor Comfort 

Operable skylights elevate indoor comfort in several ways. The gentle, natural airflow created by an open skylight often feels more pleasant than the forced air from HVAC systems. They also help remove excess humidity and odours to keep the indoor environment fresher.

  • Better Air Quality 

Another advantage of opening skylights is improved indoor air quality. This is the natural result of releasing stagnant air, excess carbon dioxide, and odours, while helping to remove excess moisture and airborne pollutants.

  • Improved Energy Efficiency 

The use of operable skylights for ventilation and passive cooling significantly reduces reliance on HVAC systems, minimising energy consumption and lowering bills. 

  • Convenient Operation

Opening and closing operable skylights can be easily done using a remote control or a wall switch. Some advanced retractable skylights also feature sensors that automatically close as soon as rainfall begins. 

  • Supports Passive Cooling 

It is worth noting that retractable skylights are used for ventilation and passive cooling as well. As hot air escapes through the open skylight, cooler, fresh outdoor air replaces it, naturally lowering the indoor temperature without relying on air conditioning.

Disadvantages of Operable Skylights 

There are some disadvantages of operable and retractable skylights that you should consider, and they are as follows: 

  • Higher Initial Price

When it comes to the cost of retractable skylights vs fixed skylights, operable models are typically more expensive, as they integrate moving parts, opening mechanisms, and electrical components in motorised skylights. 

  • More Maintenance 

Operable skylights generally require more regular maintenance to inspect components such as hinges, seals, and motors, ensuring the opening mechanism continues to operate smoothly and efficiently.

  • Potential for Air Leakage

Since operable skylights have moving parts, unlike fixed skylights, they are more likely to leak air into the building if the movable components wear out or if the skylight is not installed properly. 

  • Greater Risk of Water Infiltration

Similar to the risk of air leakage, operable skylights have a higher potential for water infiltration if weather seals, flashing, or moving components become worn over time, or if the skylight is improperly installed.

  • Dependence on Power 

When exploring the pros and cons of opening vs. non-opening skylights, it is important to note that motorised, operable skylights need a source of power to operate. This can be an issue during power outages or electrical failures, although many skylight manufacturers address it with battery backup systems and other solutions.

  • More Complex Installation 

Considering how operable skylights work, they tend to have more complex installation processes than fixed skylights. But expert skylight installers ensure smooth and safe installation for reliable, long-term performance.  

Learn more: Skylight Installation: Your Complete Guide to the Process & Benefits

If those are the advantages and disadvantages of opening skylights, what about fixed skylights? 

Advantages of Fixed Skylights 

As part of our breakdown of the pros and cons of opening and non-opening skylights, it is crucial to grasp the fixed skylight benefits for well-informed decision-making. They are as follows: 

  • Maximised Daylight 

Fixed skylights are excellent skylights for natural light, as they fill the place with clear or diffused light, depending on the glazing material. The result is a bright, evenly illuminated interior with no glare and enhanced visual comfort.

  • Enhanced Energy Efficiency 

As fixed skylights light up rooms without using power, they reduce electricity consumption. This is a major fixed skylight benefit, especially in commercial and industrial buildings that operate for long periods of time or around the clock. 

  • Less Maintenance

Non-opening skylights have less maintenance needs than operable models because they do not contain moving parts. However, they still need regular cleaning and routine inspections of the glazing, weather seals, and other components to maintain optimal performance and longevity.

  • Improved Weather Resistance

Since fixed skylights are permanently sealed and have no sashes that open, they are less likely to leak water and air into the building. Meaning? Rainfall falls off the panels smoothly and easily while also protecting the indoors from unwanted air coming through gaps. 

  • Cost-Effective

Regarding the price of retractable skylights vs fixed skylights, the fixed models are more cost-effective, as they do not integrate opening mechanisms, motors, or moveable components. The price can be a major selling point for property owners looking for more budget-friendly options.  

  • Greater Durability

Another fixed skylight benefit is their great durability. While operable skylights are also quite durable, fixed types are more resilient and robust. Such strength is simply the result of having simpler construction and no moving components, so there are fewer parts that can wear out or fail over time. 

Disadvantages of Fixed Skylights 

There are some disadvantages that you should take into account when it comes to fixed skylights, such as the ones listed below: 

  • No Natural Ventilation

Unlike vented skylights, fixed skylights cannot be opened. Therefore, they do not provide natural ventilation or promote indoor airflow, meaning that indoor spaces rely more heavily on HVAC systems for ventilation instead of benefiting from natural air circulation.

  • No Passive Cooling 

Fixed skylights cannot release the warm air that naturally accumulates near the ceiling. So, they do not contribute to passive cooling. However, the right glazing delivers excellent thermal performance by reducing heat transfer and maintaining a comfortable indoor temperature.

  • Limited Functional Versatility

Fixed skylights are the ideal skylights for natural light, as they are installed to serve one primary purpose: bringing daylight into a space. But they cannot be used for ventilation or passive cooling, making them less functionally versatile.

  • Not Suitable for Ventilation-Dependent Spaces

Fixed skylights may not fit spaces heavily dependent on ventilation—think indoor pools, spa areas, bathrooms, kitchens, attics, and sunrooms. Those areas benefit more significantly from opening skylights to prompt natural airflow for a more comfortable environment and improved air quality. 

  • No Emergency Ventilation 

Fixed skylights cannot provide ventilation in cases of emergency like power outages and HVAC downtime. This is unlikely to be a concern in most applications, but it may be a limitation in spaces such as kitchens, bathrooms, lofts, or workshops, where natural ventilation is sometimes desirable.

As such, we concluded our opening vs non-opening skylights’ pros and cons breakdown. 

Operable Skylights vs. Fixed Skylights Comparison: Key Differences

Here is a brief and straightforward skylight comparison between operable and fixed skylights, demonstrating their key differences:

مقارنة المنافذ السماوية (Skylights)
Aspect Operable Skylight Fixed Skylight
Ventilation Provides natural airflow No ventilation
Natural Light Provides daylight Provides daylight
Energy Efficiency Available with energy-efficient glazing Available with energy-efficient glazing
Humidity Control Helps reduce humidity through airflow Does not reduce humidity
Installation More complex Simpler
Maintenance More complex Simpler maintenance
Durability Durable with proper maintenance High durability due to no moving parts
Weather Resistance Good, but depends on seals and mechanisms Excellent due to sealed design
Automation Available with motorised and smart controls Not applicable
Ideal Applications Spaces requiring daylight and ventilation Spaces requiring daylight only
Cost Higher Lower

Fixed or Operable Skylights: Which Skylight Type Should You Choose? 

The skylight type that is best for you depends entirely on your needs and the building’s requirements. Below is a straightforward framework guiding your choice: 

  • Choose an Operable Skylight If You Need Ventilation

Operable models are best suited for kitchens, bathrooms, living spaces, and areas where humidity control is necessary, like laundry rooms, greenhouses, pools, and wellness facilities—to mention a few. 

  • Choose a Fixed Skylight If You Need More Natural Light

If daylight is the priority, go with fixed skylights. They are ideal for hallways, stairwells, living rooms, and spaces where ventilation is not a priority.

  • For Residential Projects

Operable and retractable skylights work well in homes where fresh air circulation is desired, while fixed skylights are sufficient for residential places requiring only natural daylight. 

  • For Commercial Buildings

Fixed skylights are best for areas needing only natural light, but opening skylights are best suited for buildings requiring natural ventilation as well for maximum comfort. 

  • For Hospitality and Luxury Spaces

Operable skylights can enhance guest comfort through ventilation and automation, while fixed skylights create bright, open interiors. Your choice depends on the type of place you have and the occupants’ needs. 

Read more: Commercial Skylights: How to Choose the Best One?

FAQs about Opening and Non-Opening Skylights 

Here are the most common questions and their answers: 

  • Can operable skylights be integrated with smart home systems?

Yes, motorised skylights can be integrated into smart home platforms, so they can be opened and closed through mobile applications or voice assistants. 

  • Are operable skylights secure against break-ins?

Yes. Operable skylights are completely safe against break-ins when they are closed, as they are designed with robust locking mechanisms. Many operable models also incorporate reinforced frames for added security. Keep in mind that locking the skylight when not in use is essential for safety, too.

  • Do fixed and operable skylights use the same glazing options?

Yes. Both fixed and operable skylights are available with the same glazing options like low-E coatings, double or triple glazing, and laminated glass. The main difference lies in the opening mechanism—or lack thereof. 

  • Can fixed skylights be converted into operable skylights later?

No. Fixed skylights cannot be transformed into operable models because they are manufactured with different frames, opening mechanisms, and sealing systems. Upgrading usually means replacing the entire skylight.

  • What should you consider before choosing a skylight?

Whether you are getting an opening or non-opening skylight, it is important to consider factors like ventilation requirements, roof design, glazing type, room’s purpose, and budget before proceeding. 

Fixed and Operable Skylights from Almamary 

Want to install a skylight that lasts you decades to come? 

Whether you are considering a fixed skylight or an operable, retractable skylight, Almamary is your trusted skylight manufacturer in the MENA region. With decades worth of experience, Almamary provides you with modern skylight models in different shapes and sizes, made only of the best materials and glazing options. 

Almamary handles your skylight project from beginning to end, ensuring long-term functionality and excellent performance—no matter whether the skylight opens or not. 

Consult our team to begin.

15 Jul
Glass vs Polycarbonate Skylights

Glass vs Polycarbonate Skylights: Pros, Cons & Which to Choose

Author skylights 1 Comment on Glass vs Polycarbonate Skylights: Pros, Cons & Which to Choose Categories Al-Mamary Blogs

Are you planning to install a skylight but are unsure of which material is best for you—glass or polycarbonate? Is polycarbonate better than glass, or is it the other way around? Understanding the difference between these glazing options is essential for making the right choice with confidence and ease. 

Continue reading to explore our detailed breakdown of glass vs polycarbonate skylights, covering their advantages and disadvantages. While they are the standard in the industry thanks to their structural and compositional characteristics, choosing the glazing material that best suits your needs is what will help you get the most from your skylight.

What Are Glass Skylights?

Glass skylights are roof-mounted glazed openings designed to illuminate a building with crisp, clear natural light. They are characterised by excellent optical clarity, UV protection, scratch resistance, and other properties. 

Beyond their functionality, glass skylights are distinguished by their visual appeal, particularly when fitted with coloured glass. They are available in a wide range of shapes and sizes and can be manufactured using different glazing types to suit various architectural needs and performance requirements.

Read more: Glass Skylights: Benefits, Types, and Installation Guide

Further details: Coloured Skylights: Key Features, Installation, and Design Ideas

What Are Polycarbonate Skylights? 

Polycarbonate skylights are skylight structures installed within roof openings to allow diffused natural light to enter interior spaces. These skylights are fitted with polycarbonate sheets, making them incredibly lightweight, highly impact-resistant, and capable of withstanding harsh weather conditions. 

They deliver reliable and effective thermal insulation, UV protection, and durability, ensuring outstanding performance. Apart from functionality, these skylights come in various shapes due to the flexibility of polycarbonate panels, allowing them to accommodate different architectural designs.

Explore now: Skylight Shapes: 5 Skylight Options to Consider

Glass vs Polycarbonate Skylights: Key Differences

Skylights are built to last you decades, so be sure to choose the right glazing material to support such longevity and reliability for years to come. Our glass vs polycarbonate skylight comparison below outlines the advantages and disadvantages of each type, exploring their unique features and how they benefit you. 

  • Durability 

Durability refers to the glazing’s ability to resist external factors without sustaining damage. That being said, both materials are highly durable but in slightly different ways. Glass skylights can endure environmental elements without yellowing or degrading with time, keeping their high-end appearance intact. They are also incredibly scratch resistant, so the surface retains its sleek look despite abrasive particles rubbing against the surface during cleaning. However, glass is less resistant to strong impact compared to polycarbonate. 

Polycarbonate skylights, on the other hand, are extremely resistant to high impact coming from hail, falling debris, and accidental impact, so they are very difficult to shatter and crack. In addition, they endure weather conditions and sun exposure, yet they are more likely to yellow or degrade with time. To counter this, specialised coatings are added to keep the material in good condition. Notably, polycarbonate is less scratch-resistant than glass, so it is your unique needs that determine which one is more suitable for you.   

  • Thermal Performance

One of the main benefits of skylights is their ability to regulate indoor temperature, keeping it warm in winter and cool in summer. Therefore, thermal performance is a key aspect of the glass vs. polycarbonate skylights comparison. Both glass and polycarbonate panels deliver satisfactory thermal performance—but there is more nuance to this statement. 

Glass generally offers superior thermal insulation, especially when manufactured as double- or triple-glazed units with Low-E (low-emissivity) coatings or insulating gas fills, reducing heat transfer and improving temperature control. To compare, multiwall polycarbonate sheets provide good insulation as well thanks to their internal air chambers, which are hollow spaces in-between layers, functioning like insulating barriers that slow down heat transfer. 

Nevertheless, glass thermal insulation remains stronger, positioning polycarbonate as a more practical choice for applications where heat control is not a primary concern, such as warehouses or agricultural buildings.

  • Light Quality

If you are debating whether or not glass or polycarbonate roofs are better for natural lighting, each option offers incredible daylighting, but in their own unique way. Glass skylights provide exceptionally clear natural daylight, allowing colours to appear more accurate. And since glass does not significantly diffuse sunlight, it maintains excellent optical clarity. However, this does not result in excessive glare, as glass is usually treated with features that help control glare and improve indoor visual comfort.

Polycarbonate skylights, on the other hand, fill interior spaces with soft, diffused natural daylight, creating more uniform illumination with fewer harsh shadows and reduced contrast. Unlike glass skylights, they scatter incoming sunlight, resulting in a lighting effect that is less direct and less optically clear. While the light is not as crisp or transparent as that provided by glass, its even distribution helps minimise glare and creates a comfortable, balanced indoor environment. 

More information: Retractable Skylights: The Ultimate Solution for Natural Light and Ventilation

  • Weight and Installation

These are crucial elements when exploring the pros and cons of glass and polycarbonate skylights and roofs. Regarding weight, glass is significantly heavier than polycarbonate, especially double- and triple-glazed units. This means that glass roofs require stronger structural support to carry the load safely and efficiently. As a result, their installation process needs careful handling, and it tends to be more complex. 

On the contrary, polycarbonate is significantly lighter than glass, which is the case even with multiwall panels. Therefore, installation procedures are easier and simpler, and structural integration can be carried out without major reinforcements. Polycarbonate skylights, as such, can be installed on lighter roof structures that would not be able to handle glass skylights without lots of additional support. 

Learn now: Skylight Installation: Your Complete Guide to the Process & Benefits 

  • Maintenance and Lifespan 

The comparison of glass vs polycarbonate skylights goes beyond installation and into their long-term needs and longevity. Glass skylights generally have a longer lifespan than polycarbonate skylights, typically lasting between 30 and 50 years, whereas polycarbonate skylights have an average lifespan of 10 to 15 years. 

Glass is a highly stable glazing material, meaning that it resists yellowing, weathering, and degradation, making its maintenance requirements relatively minimal. With regular cleaning, it retains its optical clarity, transparency, and premium appearance for decades. Meanwhile, high-quality UV-protected polycarbonate offers good resistance to weathering and long-term deterioration, too. However, its softer surface is more prone to scratching, so it requires more careful cleaning and upkeep. 

  • Appearance 

The glass vs polycarbonate skylights comparison also entails a general overview of both their appearances. Glass has a premium and superior look to it, especially with its luxurious finish, making it a highly sought-after option in modern architectural settings and elegant destinations. Coloured glass skylights featuring floral, geometric, or other designs are also breathtaking architectural statements that elevate the entire place to a new level of visual aesthetic. 

Polycarbonate skylights generally appear less sharp and optically clear than glass, particularly when multiwall sheets are used, making them perfect for practical applications, such as warehouses, factories, and industrial facilities, where durability and functional performance is prioritised over aesthetics. Although polycarbonate is not typically available in decorative coloured glazing like glass, it is offered in a range of finishes, including clear, bronze, grey, and opal, allowing different levels of light transmission, privacy, and solar control. 

Explore further: What Makes a Skylight Design Instagrammable? 

  • Cost 

Cost is the final aspect of our glass vs polycarbonate skylights breakdown, highlighting it as a crucial element for buyers to look into. It is worth mentioning that the exact cost of any skylight depends on the material, coatings, frame material, shape, size, and many other elements. That being said, glass skylight prices are generally higher than polycarbonate roofing solutions, due to the former’s greater weight and more complex manufacturing and installation procedures. 

Here is a summary of the differences between glass and polycarbonate skylights, outlining the key takeaways from the comparison above:

Differences between Glass and Polycarbonate Skylights
Differences between Glass and Polycarbonate Skylights
Key Difference Glass Skylights Polycarbonate Skylights
Durability Highly durable, extremely scratch-resistant Highly durable, incredibly impact-resistant
Thermal Performance Superior insulation, especially with coatings and insulating gas Good insulation, especially with multiwall sheets
Light Quality Crisp and clear, no glare Softer and diffused, no glare
Weight Significantly heavier, especially if double- or triple-glazed Not only lighter than glass, but also very lightweight in general
Installation More complex, likely to need additional structural support Simpler, less likely to need additional structural support
Maintenance Minimal needs Needs more maintenance
Lifespan Longer lifespan Shorter lifespan
Appearance More high-end, premium, and sleek looks. Preferred for aesthetic purposes Less clear than glass, used for more functional purposes
Cost Generally higher upfront cost Generally lower upfront cost

Considering all the above factors, which skylight material is best for you? 

Glass or Polycarbonate Roof: Which Should You Choose?

After having explored an in-depth analysis of both types, which one is best for you? The answer entirely depends on the spatial requirements of the building and the project. So, choose glass if you prioritise optical clarity, visual appeal, energy efficiency (double- or even triple-glazed), and long-term durability. Keep in mind that glass would require a bigger investment upfront. Nevertheless, glass skylights are best suited for homes, offices, hotels, retail places, and architecturally focused projects. 

Polycarbonate, on the other end, should be your pick when impact resistance is the priority. It is also perfect for lightweight structural loads, softer daylight, incredible design flexibility, and a more limited budget. Considering that polycarbonate is performance-driven, it is best suited for warehouses, factories, industrial buildings, sports halls, schools, and other large-span commercial applications.  

Learn more: Commercial Skylights: How to Choose the Best One?

FAQs about Glass and Polycarbonate Roofs and Skylights 

Here are some of the most frequently asked questions and their answers: 

  • How long do glass skylights last?

Glass skylights can last from 30 to 50 years, depending on how well they are maintained and the overall quality of glazing and other structural elements. 

  • What type of glass is best for skylights?

Tempered and laminated glass are generally the best glass types for skylights, as they provide amplified structural strength and durability as well as enhanced safety and UV protection. 

  • What is the alternative to glass skylights?

Polycarbonate sheets are the alternative to glass skylights thanks to their lightweight nature and incredible durability and strength. They are also the more economical option, as they do not require high upfront costs like with glass roofs. 

  • Does polycarbonate turn yellow in the sun?

Yes, unprotected polycarbonate sheets turn yellow in the sun, which is why manufacturers add specialised protective coatings to keep them from degrading and yellowing due to prolonged sun exposure. 

  • Is a glass roof better than polycarbonate?

Not necessarily. The best option out of both depends on the project’s structural requirements and the building’s spatial needs, as each roof type has its own unique advantages and disadvantages that fit different purposes. 

The Top Glass and Polycarbonate Skylights from Almamary  

Almamary is a leading skylights manufacturer in the MENA region, providing the best skylight solutions for residential, commercial, and industrial applications. Our team of experts inspects the building where the skylight is to be installed, so we identify priorities, needs, and recommendations, ultimately choosing the right glazing material for premium performance for decades to come. 

Contact us to get started today.

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