Flat Roof Skylight 600 x 900 mm, Fixed, Frameless, Triple Glazed, 29.40kg, UV 0.9
Original price was: £ 490.00.£ 355.32Current price is: £ 355.32. incl. VAT
Prices go up when the timer hits zero.
38 in stock (can be backordered)
Skylights.co.uk: Trusted rooflights. Built to prevent leaks.
Type: Fixed Frameless Flat Roof Skylight
Internal Size: 600 x 900 mm
External Size: 800 x 1100 mm
Glazing Type: Triple Glazed
Net Weight: 29.40kg
U Value: 0.9 W/m²K
G Value: 58%
Light transmittance : τv [%] 72
Sound reduction (EN 12758): 39dB
UV transmission : τuv [%] 0
Toughened safety & laminated glass
Leakproof Design
Our Flat Roof Skylights are composed of three distinct glass panes, each contributing to the unit’s durability and thermal efficiency:
- Top Pane: 6 mm Planibel Clearlite / Thermally toughened glass BS EN 12150
- Middle Pane: 6 mm iplus Thermally toughened glass with Low-E coating EN 12150s
- Bottom Pane: Stratobel Clearlite 44.2 / Laminated glass EN 14449
Premium Flat Roof Skylights
Interested in installing a skylight but worried about heat loss? Our Flat Roof Skylight, measuring 600 x 900 mm, offers an impressive U-value of 0.9 W/m²K. With triple-glazed units and warm edge spacer technology, it provides excellent insulation, ensuring your space stays warm in winter and cool in summer. Enjoy abundant natural light without compromising on energy efficiency.
Why Choose Our Frameless Flat Roof Windows
- Energy Efficiency: Experience superior thermal performance with our triple-glazed units and warm edge spacer technology. Achieving a U-value of 0.9 W/m²K, these skylights keep your space comfortable throughout the year while helping to lower your energy bills.
- Unobstructed Views: The frameless design maximizes the amount of natural light entering your home, offering breathtaking, unobstructed panoramic views of the sky, enhancing the overall ambiance of your space.
- Self-Cleaning Convenience: Our skylights feature a sunlight-activated self-cleaning coating that reduces maintenance efforts, keeping the glass clear and spotless with minimal effort.
- Versatile Installation: Designed for flat roofs with pitches between 6° and 45°, our skylights are versatile enough to fit a variety of architectural styles and requirements, making them a perfect choice for many homes.
- Peaceful Ambiance: Our skylights provide excellent soundproofing, creating a quieter indoor environment and enhancing your overall comfort.
- Sun Safety: Enjoy natural light without worrying about harmful UV rays, as our skylights offer effective protection against UV radiation.
- Safety First: Constructed with safety-toughened glass, our skylights ensure maximum safety and durability, giving you peace of mind.
- Regulation Compliant: Our skylights meet all British Standards & Building Regulations and carry the CE safety marking.
Essential Skylight Accessories
Enhance your skylight experience with these essential accessories, designed to ensure seamless skylight installation and optimal performance:
Inclined Insulated Upstand for Flat Roof Skylight 600x900mm: Our pre-built Inclined Insulated Upstands are crafted from thin wood veneers bonded with strong adhesives. This unique layering technique provides exceptional structural integrity, preventing warping or sagging over time, and simplifying the installation process.
- Skylight Blinds for Flat Roof Window 600x900mm: These custom-fitted blinds are designed specifically for your skylight size, giving you control over light and privacy. Create the ideal atmosphere in your home by adjusting the blinds to your preference.
- Installation Kit for 1 x Flat Roof Skylight 600x900mm: This comprehensive kit includes everything you need for a secure and hassle-free installation, ensuring your skylight is installed correctly for optimal performance and longevity.
- Foam Rope – Structural Glazing Tape – 9mm Thick (7.5m Rolls): Our high-quality tape provides effective sealing to keep out the elements and offers crucial support during installation, ensuring a secure and reliable fit for your skylight.
- Weatherproofing Sealant (Silicon) – DOWSIL™ 791, 310ml: Essential for creating a watertight seal around your skylight, this durable silicon sealant ensures a weatherproof finish, keeping your indoor environment comfortable and dry.
- Self-Cleaning Liquid Smart Glass Bottle 15ml: Maintain the self-cleaning properties of your skylight with this special solution. It replenishes the self-cleaning coating, making it easy to keep your glass sparkling clean with minimal effort.
Choose Skylights.co.uk
We offer an extensive range of standard sizes, including the popular 900 x 600 mm skylight (also known as 0.9 x 0.6 m roof light), as well as fully custom skylights tailored to meet your specific needs.
Our flat rooflights deliver exceptional thermal performance, natural light and modern design!
Download our full product catalogue for more details about our flat roof skylights size range.
Contact us today to discuss your skylight project!
🗺️ Where to Buy Flat Roof Lights 600 x 900 mm Near Me
Looking for 600 x 900 mm flat roof lights near you? Also known as a 0.6 x 0.9 m skylight, this rectangular size is ideal for studio spaces, loft conversions, and rear extensions. Our frameless rooflights combine aesthetic appeal with technical precision—perfect for any modern build.
✅ Trusted by trades & architects across the UK
✅ Installer Support Available – We’re Here to Help
✅ Ideal for Extensions, Lofts, & New Builds
✅ 20-Year Warranty Included – No Hidden Costs
✅ Custom Sizes & Bespoke Options
Backed by UKCA certification and crafted with long-lasting materials, our skylights are built for British weather and shipped quickly nationwide—so your project stays on track.
| Weight | 29.40 kg |
|---|---|
| Dimensions | 115 × 10 × 85 cm |
| Internal Size |
600 x 900 mm |
| External Size |
800 x 1100 mm |
| Glazing Type | |
| Glass Tint | |
| Self-Cleaning: |
Yes |
| Roof Type |
Flat Roof ,Pitched Roof |
| Skylight Type |
Frameless |
| Top Glass Pane: |
6 mm Planibel Clearlite / Thermally toughened glass EN 12150 |
| Air Gap |
16 mm Argon 90% |
| Middle Glass Pane: |
6 mm iplus 1.1 pos.5 Thermally toughened glass with Low-E coating EN 12150 |
| Air Gap |
16 mm Argon 90% |
| Bottom Glass Pane: |
Stratobel Clearlite 44.2 / Laminated glass |
| Spacer Type |
15mm Black Warm Edge |
| U value |
0.9 [W/(m².K)] |
| Sound reduction - EN 12758 |
[dB] 39 (-2;-7) |
| Light transmittance: tv [%] |
72 |
| External light refection : ρv [%] |
17 |
| Internal light refection : ρvi [%] |
17 |
| Colour rendering index : Ra [%] |
97 |
| Solar energy transmittance : g [%] |
57 |
| Shading coefcient : SC |
0.66 |
| Selectivity |
1.26 |
| UV transmission : τuv [%] |
0 |
Sold By Manufacturer
38 in stock (can be backordered)
8 in stock (can be backordered)
ACTIVE PROMOTION
Use Code: TODAYONLY
Transform your home with our triple-glazed flat roof skylights, maximizing natural light and thermal efficiency. Pair them with our separately sold Insulated Upstand, featuring 40mm core insulation to cut heat loss and lower energy costs.
Why Choose Our Insulated OSB Upstands?
Perfect Pitch for Water Drainage
Built-In 6° Pitch for perfect drainage
Exceptional Insulation
High Insulation with 40mm core and 15mm OSB
Ready-to-Install, Precision-Cut Fit
Factory-made to match our skylights exactly
Brighten Your Home & Save More – Bundle & Save!
Upgrade with our triple-glazed flat roof skylights for maximum light and energy efficiency.
Add the Insulated Upstand and save up to 7% with our bundle offer!
✔️ Boost thermal performance
✔️ Cut energy costs
✔️ Enjoy lasting durability
Get the complete solution at a better price – bundle today!
Get a Bundle with extra 7% Discount on Skylight and Upstand
Flat Roof Skylight 600 x 900 mm, Fixed, Frameless, Triple Glazed, 29.40kg, UV 0.9
Original price was: £ 490.00.£ 330.45Current price is: £ 330.45. incl. VAT
Inclined Insulated Upstand for Flat Roof Skylight 600 x 900 mm
Original price was: £ 377.00.£ 220.88Current price is: £ 220.88. incl. VAT
Before and After
See how a space is completely transformed with a Skylights.co.uk.
- Maximum daylight
- Modern minimalist design
- Superior insulation & UV protection
One change. Total transformation.
Our Roof Windows in Action
Photos from completed projects by our clients
Quick Shipping
Get it fast with our expedited shipping options.
Secure Payment
Shop safely with our secure online checkout.
Easy Returns
Hassle-free returns within 30 days.
20 Year Warranty
Enjoy peace of mind with our extensive warranty.
TILE & MEMBRANE COMPATIBLE
FLAT ROOFS
EASY & SECURE INSTALLATION
Will It Fit My Roof?
1. Flat Roofs
Our skylights are suitable for flat roofs with a minimum pitch of 6° when installed with the correct upstand or flashing kit.
2. Tile & Membrane Compatible
Designed for all common UK roof types – from clay tiles and slate to EPDM, GRP, and bitumen flat roof membranes.
3. Easy & Secure Installation
Each skylight is engineered for watertight, airtight installation. Use our installation kits and add our pre-fabricated upstands for a perfect fit and finish.
FAQ
Our triple-glazed models offer U-values as low as 0.9 W/m²K (whole unit), helping you meet Part L regulations and reduce heat loss.
Yes. All our skylights come with self-cleaning glass as standard to reduce dirt buildup.
Yes. We offer made-to-measure rooflights to fit your exact requirements. Contact us for a custom quote.
Yes. When installed with our official flashing kit and according to instructions, it is guaranteed to be watertight.
Absolutely. Each unit uses toughened outer and laminated inner glass that complies with UK safety standards (EN12150 / EN14449).
We offer a 20-year guarantee on the glazing unit.
Noah Williams –
Just had a 600 x 900 mm skylight installed in my small kitchen, and it’s like a whole new room! The quality of skylights.co.uk is unmatched, and the natural light has completely revitalized my cooking area.
Grace Spencer –
Installed a small skylight in a client’s office. They love it, very nice product.
Fergus McMahon –
The flat roof skylight has given our Plymouth home such a modern and bright feel. It was exactly what we needed to let more light into our space.
Roisin McGuinness –
In Birmingham, our flat roof skylight has made our living area so much more pleasant. It looks fantastic and lets in so much light.
Rachel MacDonald –
Our flat roof skylight in Carlisle is perfect. It brings natural light into our previously dark living room, and the quality is outstanding.
Holly Watson –
Couldn’t be happier with the skylight. The extra light it brings in is perfect for our home office, and the delivery was faster than expected.
Eoin Horns –
Super happy with the frameless roof window we installed in the bathroom. It’s sleek and modern, and the light it lets in is amazing.
Rhys Jerry –
Couldn’t be happier with our fixed roof light. The natural light has transformed our kitchen, and the service was excellent!
Niamh O’Sullivan –
The flat roof windows have made our living room feel much more open and airy. The natural light they bring in is fantastic.
Adam Dawson –
This Regal Glass flat skylight is the crown jewel of our extension.
Grace Bailey –
The skylight was delivered fast and has brought in so much light to our bedroom. The quality is excellent, and the installation was simple.
Dominic Morley –
Frameless skylight from Regal looks like a luxury feature.