Original price was: £950.52.£523.00Current price is: £523.00. incl. VAT
Make the most of our limited-time deal before it’s gone for good when the timer runs down.
Details:
No more leaks. Leakproof Rooflights from Saris-Extensions.
* Glazing Type: Triple Glazed
* Internal glass size: 400 x 3000 mm
* U Value: 0.9 W/m²K
* G Value: 58%
* Noise-proofing value: 39 dB
* Free delivery within London (M25)
* Nationwide Delivery
* 20-Year Warranty
⚠️ Important Notice
Some suppliers cut costs by using thin glass in large rooflights — this can cause sagging and water pooling.
Our tests show that reinforced, thicker glass is essential for safety and durability.
At Saris-Extensions, every rooflight is built to UK standards, ensuring lasting strength and peace of mind.
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| Weight | 66 kg |
|---|---|
| Dimensions | 325 × 10 × 85 cm |
| Brand | Saris-Extensions |
| Manufacturer | Saris-UK Ltd |
| Color | Clear |
| Size | 400x3000mm |
| Label | Clearance |
7 in stock
19 in stock
This high-performance, non-opening frameless skylight is triple glazed with 6mm toughened, self-cleaning glass and a U Value of only 0.9 W/m²K.
The internal quoted glass size is 400 x 3000 mm, see the structural diagram below.
Our Flat Roof Skylights are composed of three distinct layers, each contributing to the unit’s durability and thermal efficiency:
Top Layer: 6 mm Planibel Clearlite / Thermally toughened glass BS EN 12150
Middle Layer: 4 mm Planibel Clearlite / Thermally toughened glass BS EN 12150
Bottom Layer: Stratobel Clearlite 44.2 iplus 1.1 / Laminated glass with Low-E coating EN 14449
When it comes to choosing a roof light for your home, we know that safety is an important deciding factor.
This product conforms to British Standards & Building Regulations and has all Safety Markings.
It is CE marked which is a certification mark that indicates conformity with the relevant EU directives and standards for products sold within Europe.
Our Skylights can be installed at a maximum pitch of 45 degrees.
Choose our skylights for a superior, clear, and comfortable living environment.
At Saris-Extensions, our Flat Roof Skylights are more than just an architectural feature; they are a fusion of advanced technology, energy efficiency, and sleek design.
Best Price 20 Years Warranty Guarantee Payment Safety Self Cleaning Clear Tint UV Protected Free Delivery within London (M25) Аll Glass Panels Safety Toughened and Laminated Glass Made In EU London Based Stock Quick and easy installation Step By Step installation guide 24/7 technical helpline| Weight | 66 kg |
|---|---|
| Dimensions | 325 × 10 × 85 cm |
| Brand | Saris-Extensions |
| Manufacturer | Saris-UK Ltd |
| Color | Clear |
| Size | 400x3000mm |
| Label | Clearance |
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Important Notes:
Over the years, we've observed numerous errors and poor practices in skylight installations that have led to persistent issues. To help you avoid these pitfalls, we're eager to share our accumulated expertise and knowledge. We highly recommend checking our detailed installation materials to ensure you apply the best practices for a flawless and durable installation.
When selecting sizes for our Skylights, please note that the listed dimensions correspond to the bottom (internal) glass panel. Each skylight's top panel extends an additional 100mm on each side, making the overall externally visible size 200mm larger in both width and length. This design ensures a robust, weather-resistant seal while maximizing the internal visibility and light entry of your skylight installation.
See the remarkable difference with a Saris roof window.
One simple change. A world of possibilities.
Choose Saris-Extensions.
If our standard stock sizes don't quite match your project’s requirements, there is no need to worry—we have the perfect solution.
At Saris Extensions, we specialize in providing high-quality, bespoke skylights designed to fit your specific architectural needs. Simply use our online custom size calculator to insert your opening dimensions and receive an instant, transparent quote. From precision engineering to your doorstep, we make it easier than ever to receive and fit a skylight that is perfectly scaled for your space.
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Yes. Our triple-glazed models deliver U-values as low as 0.9 W/m²K, helping to reduce heat loss, lower energy bills, and comply with Part L Building Regulations.
Absolutely. Every unit uses toughened outer glass and laminated inner glass, ensuring excellent durability and meeting all relevant UK and EU safety standards (EN12150 / EN14449).
Yes. Designed for versatility, our rooflights fit pitched roofs between 6° and 45°, and are fully compatible with both tile and slate roofing materials. We also offer options for flat roofs.
Yes. Whether your roof is warm or cold constructed, our skylights are suitable and designed for flexible installation.
Yes — when installed using our official flashing kit and following the provided instructions, the unit is fully watertight and weather-sealed.
Yes. All models include self-cleaning glass as standard, helping to reduce dirt accumulation and maintain clear views with minimal maintenance.
Each product comes with the glazed skylight unit and installation instructions. Optional items such as flashing kits, upstands, and blinds are available to order separately.
Yes. We offer a full made-to-measure service, allowing you to order rooflights tailored to your exact dimensions. Contact us to request a custom quote.
Standard sizes are dispatched within 5–10 working days. Custom and made-to-measure orders typically take 3–5 weeks. All orders are shipped via tracked and insured delivery
Our rooflights are backed by a robust 20-year glazing guarantee, giving you complete confidence and long-term protection.
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7 in stock
Paul Clark –
Sleek Design, Seamless Installation: Saris Extension! Recommend company!
Ethan Robson –
Lily from Saris Extension was more than just a customer service rep. She was my guide, advisor and friend through my skylight journey. Her expertise and kindness made all the difference.
Sasha Grey –
Saris Extension brought a beacon of light into our London home. The bespoke roof window they installed has dramatically improved our living space. We wholeheartedly recommend Saris Extension to anyone looking for quality skylights.
Amelia Johnson –
I’ve always dreamed of a bright, airy home, and thanks to our roof window, my dream has come true. The natural light that streams into our living space is breathtaking.
Alan Smith –
I’m incredibly happy with my flat roof triple glazed skylight from Saris Extension. Not only is it well-insulated, but the extra sunlight it allows into my home has been a mood-lifter.
Nina Collins –
The triple glazed skylight 400 X 3000 for my flat roof from Saris Extension is outstanding. It’s really helped to keep my home well insulated, and the amount of natural light it lets in is just delightful.
Emily Clark –
I can’t recommend Saris Extension’s flat roof triple glazed skylights enough. They’ve totally transformed my living space with beautiful natural light and help maintain a comfortable temperature year-round.
Dann Eggburds –
Excellent product and service! The skylights were delivered quickly and the quality is superb. The variety of sizes allowed us to choose the perfect one for our home office. The difference in our space is remarkable—more light and a better atmosphere.
Liam Dwayne –
Top-quality skylights with fantastic service to match. The wide range of sizes meant we could find exactly what we needed for our home office. Delivery was fast, and the customer support was exceptional. The skylights have really brightened up our space and made it much more pleasant to work in.
James Gun –
I recently purchased skylights from this company, and I am beyond impressed. The quality is outstanding, and the delivery was lightning-fast. Customer support was incredibly helpful and answered all my queries promptly. With a wide range of sizes, I found the perfect fit for my home. The skylights have completely transformed my living room, making it bright and airy. Highly recommend!
Ashley Hope –
The light it brings in is fantastic.
Oliver Benn –
The delivery was fast, and the technical support was very responsive.
Gwyn Roberts –
Absolutely thrilled with the frameless roof window. It looks sleek and modern, and the amount of light it brings into our home is incredible!
Siobhan Leary –
Our flat roof skylight has brought so much natural light into our kitchen. The installation was straightforward, and the delivery was fast. Highly recommended!
Daniel Rogers –
Our living room looks completely different now with the skylight.