Flat Roof Windows


Enhance Your Space with Frameless Rooflights

Discover the elegance and efficiency of our full range of frameless rooflights, designed to bring natural light into your home without compromising on style. Our frameless designs are available in various shapes and sizes, catering to a broad spectrum of architectural needs. Each piece features double-glazed glass with a thermal break, ensuring your space remains well-lit, warm, and energy-efficient.

Maximizing Natural Daylight

Flat rooflights are an ideal solution for illuminating rooms with flat roofs. Easy to install and fuss-free, these rooflights are engineered to maximize natural daylight, transforming dark areas into vibrant, inviting spaces. Our selection includes a variety of shapes, sizes, and specifications, allowing for custom-designed skylights that seamlessly integrate with any flat roof architecture.

A Range for Every Requirement

From the aesthetic appeal of roof lanterns to the practicality required for large commercial roofs, our product range is diverse. Whether you’re looking to add a touch of luxury to your home or seeking a functional lighting solution for a commercial space, our flat rooflights offer versatility and performance. With a focus on enhancing daylight and improving thermal efficiency, our rooflights are designed to meet the demands of any project.

Designed for Performance and Aesthetics

Our flat rooflights not only illuminate your property but also contribute to its thermal efficiency and aesthetic appeal. The combination of cutting-edge design, advanced glazing technology, and minimalistic frames makes our rooflights a must-have for any modern property. Embrace the benefits of natural light with our stylish, high-performance flat rooflights, tailored to fit the unique specifications of your space.

Features & benefits

Feature Description
Full Thermal Break Unbroken seal for airtight design, improving energy efficiency (warmer in winter, cooler in summer) and potentially lowering heating bills.
Frameless Internal Finish Modern aesthetic with unobstructed views.
Walk-on Glazing Option Unique feature allowing the roof window to be walked on, for light and fresh air access without a ladder.
Rapid Installation Designed for easy installation, saving time and potential labor costs.
Electronic Opening Version Automatic opening option for enhanced convenience and ventilation control.


Specification Description
Max Length 3000mm (larger available on request)
Max Width 2000mm (larger available on request)
Max Weight 1000 kg
Profile Height 102mm
Glazing Thickness 24-60mm
Glazing Method Structurally bonded
Minimum Level 5 degrees
Maximum Level 25 degrees
U-Value From 1.0 W/m2K
Air Permeability Class 4
Water Tightness Class 9A
Wind Resistance Class A4

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What we Like

Key Features

  • 10 Years Warranty
  • Industry leading weather testing
  • Skyway frame technology
  • Outstanding Thermal performance
  • Any RAL Colour Available
  • U-values as low as 0.4W/m2K
  • Square, rectangular or circular
  • Bespoke sizes
  • Concealed Fixings
  • compatible for both flat and pitched roofs
  • Fully thermally broken aluminium frame

Glass Options

  • Double, triple or quadruple glazed IGU’s
  • Protect+
  • Heated
  • Switchable privacy
  • Solar Control
  • Coloured/Tinted
  • Anti Slip
  • Privacy glass
  • CUin advanced thermal protection


  • Integrated Electrical Blinds
  • Bespoke shapes and sizes
  • Pre-formed Timber Upstands
  • Secondary Skyway+ Electric Blackout Blind
  • Wall Abutments

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Flat Roof Windows Accessories

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  • Can you have windows in a flat roof?

    Can you have windows in a flat roof?

    If you have a flat roof, opt for skylights as they apply to this type of construction. Skylights and flat roof windows are some of the best additions you can make to your flat roof to increase the amount of natural light coming into the room.

  • How do you clean flat roof windows?

    How do you clean flat roof windows?

    It’s best to use a mild detergent mixed with warm water to clean your rooflight. Any type of glass cleaning products work as well. You should make sure to use a soft cloth or sponge and remove any dirt from surfaces gently.

  • Can roof lights be flat?

    Can roof lights be flat?

    Flat rooflights are a great way to add lots of extra daylight into a room. They are especially suited to rooms with flat roofs above. Flat rooflights are available in a wide range of shapes, sizes and specifications, so we can create perfectly designed skylights for a flat roof, roof lanterns or roof lights for you.

  • What is a kerb upstand?

    What is a kerb upstand?

    The Flatglass Rooflights are designed to be installed onto 150mm upstand kerbs, so the kerb should be level in one plane. To ensure there is no ingression of water, it should also not be less than 150mm high. The top of the curb should be angled as a way to make water fall off as it does from a glass. The road also needs to show signs of aging.

  • How thick should my Flatglass kerbs be?

    How thick should my Flatglass kerbs be?

    Usually, we recommend that the kerbs be at least 75mm thick. This is to support the rooflight frame and to properly hide it from view from below.

    Glass facades are ideal if you want a no-holds-barred view. Thicker kerbs can let in light from below, but they may compromise your view of the frame.

    Always consult a building professional to ensure the suitability of the kerb before installing a rooflight. It must be strong enough to easily take the weight of the rooflight and any other loads imposed by wind or snow, for example. Before installing a rooflight, be sure to get signoff from a building professional. The kerb needs to be strong enough to take the weight of the rooflight and other loads that may be imposed by wind or snow, for example.

  • I'm building my house's Flatglass rooflight; do I need to allow for leniency when installing the rooflight in case it doesn't fit correctly?

    I'm building my house's Flatglass rooflight; do I need to allow for leniency when installing the rooflight in case it doesn't fit correctly?

    The long answer is yes, the tolerance has been built into this product and there are a number of factors that contribute to this. For example, if you provide us with finished weathered kerb dimensions equal to 1000mm down the slope by 2000mm long, we will fabricate a roof light that’s 1046mm x 2020mm. This means that the sloping roof light will slide easily over the curb, and be well-fitted to the top of the curb, like a box lid.

  • Will water pool on the glass of my rooflight?

    Will water pool on the glass of my rooflight?

    This might not seem so at first, but glass is actually a ductile material. Its rigidity depends on factors like its size and how many panes it has. The bigger the unit the less rigid, and it’ll deflect more with a heavier load.

    When installed in the horizontal plane this means that the glass will start to dip. This is because of the dead load and also pressure from wind or snow.

    Obviously, if a liquid like water were to be placed upon the glass, it will fill the dish and create a pooling effect.

    If pooling water is to be eliminated, there needs to be a greater thickness of the outer skin of glass. This thickness will reduce deflection-boundless glazing. However, to make the rooflights safer, we heat-soak toughen the glass to make it stronger, but unfortunately this can introduce a bow in the glass.