Glass skylights are among the most common types of skylights in commercial and residential buildings. They are unique for their high-end and elegant appearance, making them the go-to option for the best aesthetic appeal. Not only that, they also feature core functions that deliver consistent and excellent performance all year round.
Are you interested in getting a glass skylight for your property? Our full guide is the perfect starting point. Read to gain insights on the types of glass skylights, their benefits, replacement, requirements, and installation process, in addition to more in-depth details. For niche consultations about custom glass skylights, reach out to Almamary, a leading glass skylight manufacturer in the MENA region, to get started on your glass skylight roof.
Types of Glass Used in Skylights
Not all glass skylights are made of the same glazing material. There are several types of glass used in skylights, each one of them serving different functions and delivering various advantages.
That said, there are two main categories for the types of glass used in skylights: the structural safety types and the performance types. Here is a brief overview of both of them:
Safety Glass Types
Standard (annealed) glass, typically used for windows, is not allowed for skylights due to safety requirements. Instead, building codes mandate the use of safety glazing, usually encompassing tempered glass and laminated glass. These two glass types are combined into a double-pane unit, working together as an integrated system to enhance both safety and performance.
- Tempered Glass: This is heat-treated glass that is manufactured to be much stronger than standard glazing, making it incredibly resistant to heavy impact. This layer is the outer shield of the double pane, as it faces outwards.
- Laminated Glass: This pane consists of two layers of glass with a clear plastic layer (PVB) between them. If the glass breaks, the plastic coating holds the broken pieces together, preventing them from falling into the room. Laminated glass faces inwards, as it is the interior layer.
This is the first type of glazing used in glass skylights, fulfilling safety requirements. Below is the second kind:
Functional & Performance Glass Types
These glass options are meant to handle lighting, heat, and other core functions. Such types include but are not limited to the following:
- Low-E Glass: Glass treated with a microscopic metal oxide coating to keep the indoors cool during summer and warm in winter, achieving better energy efficiency.
- Gas-Filled Glass: This type of glass used in skylights is made of two or more panes of glass. Instead of air between these layers, a dense and non-toxic gas is added for slowed heat transfer.
- Tinted or Solar Control Glass: This glazing type is infused with coloured tones to minimise intense sun glare and limit heat gain, which is especially helpful with skylights in the UAE, for instance.
If those are the types of glass used in skylights, what are their benefits? Why should you install a skylight for your home or commercial building?
Glass Skylight Benefits
Glass skylights offer invaluable benefits for both form and function, transforming the way buildings are experienced. Here are a few glass skylight benefits:
Premium & Luxurious Appearance
Glass skylights are considered the more high-end and fine option in terms of appearance when compared to skylights made of other materials like polycarbonate. This is mainly due to its refined and clearer appearance, which seamlessly integrates with modern architectural designs.
Customisable, Coloured Designs
The glass for skylights can be coloured and tinted, delivering uplifting hues that enhance the overall wellbeing and create a breathtaking look. Additionally, glass skylights can feature customised designs, including floral and geometric ones, for an exceptional architectural statement. This glass skylight benefit is highly sought after by property owners who prioritise aesthetics and visual appeal.
Read More: Coloured Skylights: Key Features, Installation, and Design Ideas
Clear Natural Lighting
Skylights are mainly installed to provide natural lighting and reduce reliance on artificial light. Glass skylights, in particular, provide clear, natural, and crisp illumination. While some materials diffuse the light, glass keeps it clear and bright. Tinted glass, however, subtly alters the colour of the light but does not flood the room with obvious colours.
Energy Efficiency
Another glass skylight benefit is enhanced thermal performance. Glass skylights feature specialised glazing that maintains comfortable indoor temperatures, reducing reliance on HVAC systems for heating and cooling. They also minimise the need for artificial lighting by filling interiors with natural daylight. As a result, they lower utility bills and improve the overall energy performance.
Enhanced Safety
All skylight types follow safety requirements, and glass skylights are no different. And with the way they are manufactured with laminated and tempered glass, they provide additional safety. Laminated glass helps keep broken fragments in place if the glass is damaged, while tempered glass is designed to break into smaller, less hazardous pieces. These safety features reduce the risk of injury and enhance the skylight’s safety and reliability long-term.
All these glass skylight benefits can be found in all types of glass skylights, which are explored below.
Types of Glass Skylights
There are various types of glass skylights, from which you can choose the most suitable one for your property needs, personal preferences, and long-term considerations.
Here are some of the types of glass skylights you should look into:
Fixed Glass Skylights
Fixed glass skylights are completely sealed and remain permanently closed, meaning they cannot be opened for ventilation. As such, they function as overhead windows to the sky, with the primary purpose of bringing abundant natural light into a building without providing natural airflow.
Operable (Retractable) Glass Skylights
Operable glass skylights, also known as retractable skylights, can be opened and closed to let fresh air in and improve natural airflow. They can be operated manually or by using electric remotes. Some of them include rain sensors, allowing them to close automatically when needed.
Explore Further: What is an Operable Skylight? Advantages and Reasons to Install One
Structural Glass Skylights
This type of glass skylight is integrated within the building’s structure, enabling it to support heavy loads like the wind, rain, snow, and high traffic. Structural skylights are not simply mounted into a roof opening like a window, but rather fundamentally incorporated into the building’s construction.
Learn Now: Structural Skylights Guide: What They Are, Key Benefits, and Design
Custom Glass Skylights
A custom glass skylight is tailor-made for the property’s performance needs, spatial requirements, and shape preferences. The standard skylights are engineered with common features and have a more limited set of options when it comes to shapes, like conical skylights, dome-shaped skylights, barrel-shaped skylights, and pyramid shapes.
Custom glass skylights, on the other hand, are made to fit custom dimensions. They also come in a variety of configurations and feature tailored glazing and performance functions. This type is best suited for unique projects like commercial glass skylights inserted into unconventional and irregular spaces.
Check Now: Commercial Skylights: How to Choose the Best One?
Knowing the benefits of glass skylights, how are they installed? Below is a step-by-step breakdown of glass skylight installation.
Glass Skylight Installation: Step-by-Step
Glass skylight installation follows a structured implementation process, ensuring efficient insertion for long-term reliability, safety, and excellent performance. While the specifics of installing a residential or a commercial glass skylight vary depending on the project’s niche requirements, here is the general installation workflow:
Roof Assessment & Skylight Planning
The glass skylight installation process begins with a thorough assessment of the roof structure before any physical work takes place. This evaluation ensures the roof can safely support the skylight by examining its load-bearing capacity, slope, and insulation layers. During the assessment, experts also identify the most suitable location for the skylight to achieve optimal performance and best sunlight exposure.
Once the assessment is complete, professionals proceed to plan the skylight’s size, design, and shape, taking into account their findings from the earlier inspection. The planning stage aims to ultimately achieve smooth integration and efficient insertion in later stages of the process.
Structural Opening & Base Preparation
The second phase includes cutting a precise roof opening according to the previously finalised skylight design and measurements. The opening must accommodate the skylight perfectly to ensure seamless integration, and it is created by cutting through the roof’s material and the underlying layers.
After this opening is ready, the surrounding structure is reinforced to protect the roof’s structural integrity. So, additional framing is installed around the opening to distribute loads evenly and keep the structure solid and secure. These enhancements ensure overall safety and durability.
Placing the Frame & Installing the Panels
Next in the glass skylight installation process comes the actual insertion of the glazing unit. But before the glass panels are put in place, the skylight frame is first positioned within the roof opening. This frame serves as the structural support that holds the glazing system and anchors it to the roof, making it essential for the frame to be installed first.
Now, the glass units are lifted into place and fitted within the installed frame according to precise alignment and safety specifications. Then, experts ensure that the panels are positioned well for the best insulation performance, structural integrity, and long-term durability.
Weatherproofing & Flashing
When installing residential or commercial glass skylights, professionals carry out weatherproofing and flashing to prevent water and air leakage. These processes are crucial for proper sealing and protection against damage and environmental impact, enhancing the skylight’s reliability, longevity, and performance.
Weatherproofing seals the skylight’s area completely by applying waterproofing membranes around its edges and surrounding roof material. Flashing, however, involves installing thin layers of metal around the skylight’s frame to direct rainwater away from the opening. Combined together, they protect the glass skylight from leaks and weather exposure.
Interior Finish
The last step of the glass skylight installation process is the interior finish, which is concerned with the area around the skylight but from inside the building. This same area is integrated seamlessly with the roof’s or ceiling’s design, resulting in a finished and effortless look. The process may include adding drywall, refining edges, and installing insulation around the opening.
Learn More: Skylight Installation: Your Complete Guide to the Process & Benefits
Notably, skylights are only installed if they fulfil certain requirements, but what are they?
Glass Skylight Requirements
The glass skylight requirements refer to the conditions and standards it must meet in order to be installed properly and perform safely and efficiently. These requirements are as follows:
Safety Requirements
Glass for skylights must be manufactured according to safety requirements to reduce the risk of injury in case of breakage. This includes compliance with the local safety codes and use of safety glass (tempered and laminated glass).
Structural & Strength Requirements
Residential and commercial glass skylights must be made using strong glazing material and securely bonded together to endure weather conditions like wind pressure, withstand accidental impact, and maintain longevity.
Energy Performance Requirements
Glass skylights must incorporate specific coatings and types of glazing to regulate indoor temperature, reduce reliance on HVAC systems, and lower energy consumption.
These are only some of the glass skylight requirements that these skylight solutions must fulfil. What about its replacement?
Glass Skylight Replacement
Glass skylight replacement refers to removing an entire skylight system and inserting a new one, but when should property owners or managers move forward with this renewal? It is mostly recommended when the skylight has been experiencing frequent leaks, the glazing is outdated and no longer meets safety standards, and if the glazing is discoloured. The replacement must prevent any issues faced with the current skylight, elevating performance and ensuring longevity.
FAQ about Glass Skylights
Here are the most commonly asked questions and their answers:
What is a glass skylight?
A glass skylight is a skylight system that uses glass as its glazing material.
How long do glass skylights last?
Glass skylights mostly last between 15 and 20 years, and they can remain in good condition up until 30 years if maintained properly.
Are glass skylights better than plastic?
Yes, glass skylights are generally better than plastic ones, as they provide top-tier durability, excellent clarity, and enduring performance. However, they tend to be more costly than the plastic option.
What is the cost of glass skylights?
Glass skylight costs vary depending on the skylight’s size, shape, design, and level of customisation. The types of glass used in skylights, the type of framing, and the complexity of the installation process all impact pricing as well.
Almamary: Leading Glass Skylight Manufacturer in the MENA Region
Do you want to install a residential or a commercial glass skylight? Do you have a specific shape or design in mind? Or do you need a custom glass skylight to fit it into an unusual space? Whatever your needs are, Almamary Skylights provides you with the top skylight solutions, delivering to you top performance and utmost satisfaction no matter where you are.
Contact us to get started on your own glass skylight today.






