Flat Roof Windows

from £351.20 Ex. VAT £421.44 Inc. VAT


Brett Martin Flat Roof Windows

Price Match Promise We guarantee to better any written quote. Please get in touch.

Bespoke RAL available on request.

Laminated and lower u-value glass available upon request.


Price Match Promise We guarantee to better any written quote. Please get in touch.

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Flat Roof Windows
  • Toughened outer pane and laminated inner pane for maximum safety
  • Simple installation direct to builder’s curb
  • UV stable silicone sealed insulating glass units for durability.
  • RAL7016 Thermally broken aluminium frame reduces risk of condensation
  • Several standard sizes to choose from – bespoke sizes also available

IMPORTANT – ALL DIMENSIONS ABOVE ARE OVERALL EXTERNAL CURB. Before purchasing your flat roof window, please download and review the following important documents to make sure you get it right first time:

Please note, all rooflights are custom made to order and CANNOT BE CHANGED OR CANCELLED ONCE PURCHASED.

*Lead times are indicative only and not guaranteed.

*FREE Economy Delivery to Mainland UK for orders over £900

Orders below this charged at £30 per consignment

Lead times are indicative only and not guaranteed.

For Friendly, Professional Advice Call 020 3005 1584

  • Competitive Prices
    Best Price Online
  • Download
    Nationwide Delivery
  • 15 Year Warranty
    10 Year Warranty

Flat Rooflights

Our best selling flat roof windows. The Brett Martin Standard fixed rooflights offer customers the benefits of safety, thermal performance and ultra-smart appearance all at a price that is hard to beat. Toughened safety glass outer pane and laminated inner pane provides maximum safety and the thermally broken aluminium frame improves thermal performance and reduces the risk of condensation. An internal trim provides a neat finish to plasterboard and internal decorations or this can be removed for curbs wider than our standard recommended 50mm. Glass options available to special order include blue or grey solar control or satin privacy glass for when the flat roof window is overlooked. Simple to install, Brett Martin Standard flat roof windows should be your first choice in terms of value and performance.

Available in a range of standard sizes or can be made to suit bespoke sizes up to 3m x 1.5M.



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  • Can You Put Windows on a Flat Roof?
    Absolutely! Flat roofs are a great opportunity to install a flat roof window. They are incredibly versatile, so whether your roof is level or pitched, we at Rooflight Centre are sure to have a window for you. Traditional windows aren’t designed to be used on flat roofs like flat roof windows are and are heat soak tested for maximum strength. We offer a range of sizes to ensure that we exclude no roof, no matter how large or small, and the option for low-maintenance glass. Contact us today if you’d like to learn more!
  • How Long Do Flat Roof Windows Last?
    With proper maintenance, a flat roof window can endure 15-20 years of use, depending on the type of glass you choose to install and the type of sealant used to surround the panes. The higher the glazing, the more durable your flat roof windows will be. This and a plethora of benefits make higher glazing a better choice. Additionally, the UV-stable silicone seals will keep your flat roof lights air-tight and weather resistant for years to come.
  • What Are The Benefits of Flat Roof Windows?
    One of the greatest benefits of flat roof windows is that they let in more natural sunlight than the average window due to their positioning on your roof being perpendicular to the sun. Because they let in so much natural light throughout the day, you won’t have as great a need to turn on the lights during the day or the evening when the sun is still shining, regardless of its position in the sky. Additionally, you can choose from a variety of glass types as well as frames to personalise your flat roof window. They’re also waterproof and low maintenance thanks to their flush fitting on the roof surface.
  • How Do You Clean A Flat Roof Window?
    All you need to clean a flat roof window is warm soapy water and a cloth. By using a jet washer, you run the risk of damaging the silicone seal surrounding the panes and compromising the waterproof qualities of the window. Alternatively, you could choose to install low-maintenance glass. Low maintenance glass doesn’t have dips in the panes as ordinary windows do, they are filled in with a microscopic coating that allows dirt to slide away or be easily washed away, as there is no texture for the dirt to adhere to. Contact us today if you’d like to learn more about low-maintenance glass.
  • Can You Walk On Flat Roof Windows?
    You can walk on flat roof windows, but only when your window is made with glass designed for this purpose. Although all of the glass used in our flat roof windows is strong and durable, they aren’t supposed to hold the weight of a person. If you’d like to install a window that is safe to walk on, you will need to use toughened laminated glass, a type of glass that endures a destructive heat test to ensure that the glass isn’t liable to shatter when put under pressure. Visit our comprehensive blog post to learn more about flat roof windows!
  • How Much Do They Cost?
    Our flat roof lights cost from £335 a window, which is a great deal that you aren’t likely to find anywhere else! We create our windows based on many different variables including size, curb inclusion, and whether you choose to include low-maintenance glass or ordinary glass panes. Additionally, we offer bespoke sizes, which we simply cannot publish on our website because of the sheer variety of size combinations. If you don’t see the size you want on our options drop-down menu, contact us for a bespoke quote!