Highly recommend Sanderstead Windows! I needed a window handle changed and, rather than charging me for a call-out, they gave me honest advice on how to fix it myself. Their tip worked perfectly and saved me a lot of money. It’s rare to find such an honest, helpful local business. I’ll definitely be using them for any future work.
20 Years Experience
Family Owned
Sustainable
Customer Recommended
No Pushy Sales
NATURAL LIGHT SPECIALISTSWhy Choose Our Flat Roof Lights?
We specialise in durable premium flat roof lights that transform dark spaces into bright, welcoming areas. Our aluminium-framed rooflights feature double or triple glazing with outstanding U-values, ensuring excellent energy efficiency. With over 20 years of glazing experience, we provide expert installation across South London, backed by comprehensive warranties and building regulations compliance.
Flood Your Home with Natural Light
Our flat glass rooflights provide an uninterrupted view of the sky while dramatically increasing natural daylight in any room. The sleek, minimalist design sits flush with your roofline, creating a clean and contemporary appearance.
Perfect for kitchens, living areas, and extensions, these roof windows reduce your reliance on artificial lighting during daylight hours, helping to lower energy consumption and create a more inviting, natural living space.
- Colours
- Glazing & Performance
Frame Colour Options
Our flat roof windows feature powder-coated aluminium frames in contemporary Anthracite Grey (RAL 7016) as standard. Additional RAL colours are available on request to perfectly complement your home's aesthetic.
Anthracite Grey
Black
White
Superior Thermal Performance
- Toughened safety glass as standard
- Argon gas filling for enhanced insulation
- Thermal Super Spacer technology
- Clear, solar, or privacy glass options
- Thermally broken aluminium frames to minimise heat loss
Outstanding Energy Efficiency Performance
According to the Energy Saving Trust, improving glazing can reduce household energy bills by up to 10%. Our thermally broken aluminium frames create an insulated barrier that minimises heat transfer and reduces condensation.
The advanced glazing technology, combined with Argon gas filling, delivers exceptional thermal performance. This means less heat loss in winter and better temperature control year-round, making your home more comfortable while reducing heating costs.
Frequently Asked Questions About Flat Roof Lights
Common questions about our flat roof lights installation, performance, and building regulations compliance answered by our glazing experts.
Contact UsMost flat roof lights fall under permitted development rights, though building regulations approval is typically required for structural and thermal compliance.
Rooflights are installed flush with flat roofs, while skylights are designed for pitched roofs and sit at the same angle as the roof surface.
Our premium flat roof lights are built for durability and longevity, backed by our 10-year frame guarantee and comprehensive insurance-backed warranty.
Yes, we offer both fixed and opening flat roof lights, with opening versions providing additional ventilation ideal for kitchens and bathrooms.
Our double glazed units achieve 1.2 W/m² U-value, while triple glazed options deliver an impressive 0.7 W/m² for superior energy efficiency.
Customer Reviews
Adam Khan
Highly recommend Sanderstead Windows! I needed a window handle changed and, rather than charging me for a call-out, they gave me honest advice on how to fix it myself. Their...
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Sara Carrasco
Sanderstead Windows did an excellent job replacing our 100-year-old windows and door. The team was professional, polite, quick and very efficient throughout the installation. They offered great value for money...
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Darley M
I am over the moon with my smart new windows & notice the difference they have made to the temp in the house already. Colin & his team were on...
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Jim Ellemore
I was looking for someone local who could supply and install Flush casement windows. After meeting with a few suppliers and checking reviews, I chose to go with Sanderstead Windows....
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Grant Stanton
Colin and Aca done a fantastic job. said they was going to be here at 07:30am and they was bang on time, also said the windows was going to be...
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John Lambert
Top class work from Colin and his team , professional and helpful through the whole process of changing our old French doors to bi-folding doors The standard of the work...
Read more
Adam Khan
Sara Carrasco
Sanderstead Windows did an excellent job replacing our 100-year-old windows and door. The team was professional, polite, quick and very efficient throughout the installation. They offered great value for money and took the time to guide us through the options so we could make the right decisions for our home. The quality of the work is fantastic and everything looks beautiful. We would definitely choose Sanderstead Windows again and highly recommend them. Thank you so much!
Darley M
I am over the moon with my smart new windows & notice the difference they have made to the temp in the house already. Colin & his team were on time, professional and very hard working. From the first visit I felt confident that Sanderstead windows were the company for me. No hard sell tactics or silly prices and lots of advice and information. I had 5 quotes in total and am happy to recommend them to anyone. Thank you all at Sanderstead Windows
Jim Ellemore
I was looking for someone local who could supply and install Flush casement windows. After meeting with a few suppliers and checking reviews, I chose to go with Sanderstead Windows. Colin recommended Residence 7 windows, which really look the part. In total Colin installed 9 Windows and a back door, spread over around a year as we worked through a big renovation. I’m really happy with how the job went, the Windows look fantastic, and Colin was flexible and easy to deal with. Highly recommended.
Grant Stanton
Colin and Aca done a fantastic job. said they was going to be here at 07:30am and they was bang on time, also said the windows was going to be fully fitter within one day, they done by folding doors with blinds in and out all within one day. Very impressed with the workmanship even in the rain, the doors turned out far better than we thought. No decorating needed inside, perfect fit. Fantastic job top marks to the guys. Highly recommended .
John Lambert
Top class work from Colin and his team , professional and helpful through the whole process of changing our old French doors to bi-folding doors
The standard of the work when fitting was high end and clean and tidy throughout
Thank you sanderstead windows ,very happy customers
John and fiona
