Flat Roof Skylight 1500 x 1500 mm, Fixed, Frameless, Triple Glazed, 110.85kg, UV 0.9
Original price was: £ 1.569.00.£ 957.09Current price is: £ 957.09. incl. VAT
Prices go up when the timer hits zero.
14 in stock (can be backordered)
Skylights.co.uk: Trusted rooflights. Built to prevent leaks.
Type: Fixed Frameless Flat Roof Skylight
Internal Size: 1500 x 1500 mm
External Size: 1700 x 1700 mm
Glazing Type: Triple Glazed
Net Weight: 110.85kg
U Value: 0.9 W/m²K
G Value: 58%
Light transmittance : τv [%] 72
Sound reduction (EN 12758): 39dB
UV transmission : τuv [%] 0
Toughened safety 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: 8 mm Planibel Clearlite / Thermally toughened glass BS EN 12150
- Middle Pane: 6 mm iplus Thermally toughened glass with Low-E coating EN 12150
- Bottom Pane: 8 mm Planibel Clearlite / Thermally toughened glass BS EN 12150
Premium Flat Roof Skylights
Considering adding a skylight but worried about heat loss? Our Flat Roof Skylight 1500 x 1500 mm offers an impressive U-value of 0.9 W/m²K, thanks to its triple-glazed units and warm edge spacer technology. This ensures superior insulation, keeping your space warm in winter and cool in summer – all while maximizing natural light!
Why Choose Our Frameless Flat Roof Windows
- Energy Efficiency: Enjoy exceptional thermal performance with triple-glazed units and warm edge spacer technology, providing a U-value of 0.9 W/m²K for year-round comfort and energy efficiency.
- Unobstructed Views: Maximize natural light penetration and enjoy panoramic sky views with our frameless design.
- Self-Cleaning Convenience: Maintain clean glass effortlessly with a self-cleaning feature activated by sunlight.
- Versatile Installation: Suitable for flat roofs with pitches from 6° to 45°, accommodating various home designs.
- Peaceful Ambiance: Achieve quieter indoor spaces with effective soundproofing.
- Sun Safety: Protect against harmful UV rays.
- Safety First: Built with safety-toughened glass for peace of mind.
- Regulation Compliant: Meets British Standards & Building Regulations, carrying the CE safety marking.
Essential Skylight Accessories
Enhance your skylight on a flat roof setup with essential accessories for seamless roof window installation and peak performance:
- Skylight Blinds for Flat Roof Window 1500x1500mm: Custom blinds for precise light control and privacy.
- Installation Kit for 1 x Flat Roof Skylight 1500x1500mm: Comprehensive kit for secure, stress-free installation.
- Foam Rope – Structural Glazing Tape – 9mm Thick (7.5m Rolls): Provides sealing and structural support during installation.
- Weatherproofing Sealant (Silicon) – DOWSIL™ 791, 310ml: Ensures a durable, weather-resistant seal around your skylight.
- Self-Cleaning Liquid Smart Glass Bottle 15ml: Restores self-cleaning functionality for effortless maintenance.
Choose Skylights.co.uk
Explore our range of standard skylight roof windows or custom rooflights designed to elevate your space:
- Exceptional Thermal Performance: Triple glazing ensures optimal insulation and year-round comfort.
- Natural Light Abundance: Floods interiors with inviting natural light, enhancing ambiance.
- Elegant Design: Modern, sleek designs that complement any architectural style.
Download our full product catalogue to discover more about our extensive Flat Roof skylight options and find the perfect solution for your project.
Ready to discuss your skylight needs? Contact us today!
🗺️ Where to Buy 1500 x 1500 mm Roof Lights Near Me
Looking to buy 1500 x 1500 mm roof lights near you? Also known as a 1.5 x 1.5 m skylight, this large square design is a standout feature for open-plan homes, modern renovations, or multi-storey builds. We manufacture frameless rooflights that deliver natural light, thermal comfort, and aesthetic balance.
✅ Large Skylight – For Bright, Spacious Interiors
✅ Frameless Glass – Sleek, Clean Appearance
✅ Secure Checkout & Flexible Payment Options
✅ Next-Day Delivery on Stock Units
✅ 20-Year Warranty – Built to Last
Every skylight is made in-house with UKCA-compliant materials, ensuring strength, safety, and a professional finish across every installation.
| Weight | 110.85 kg |
|---|---|
| Dimensions | 175 × 10 × 175 cm |
| Brand |
Skylights.co.uk |
| Internal Size |
1500 x 1500 mm |
| External Size |
1700 x 1700 mm |
| Glazing Type | |
| Glass Tint | |
| Self-Cleaning: |
Yes |
| Roof Type |
Flat Roof ,Pitched Roof |
| Skylight Type |
Frameless |
| Top Glass Pane: |
8 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: |
8 mm Planibel Clearlite / Thermally toughened glass EN 12150 |
| 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
14 in stock (can be backordered)
13 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 1500 x 1500 mm, Fixed, Frameless, Triple Glazed, 110.85kg, UV 0.9
Original price was: £ 1.569.00.£ 890.09Current price is: £ 890.09. incl. VAT
Inclined Insulated Upstand for Flat Roof Skylight 1500 x 1500 mm
Original price was: £ 264.00.£ 196.42Current price is: £ 196.42. 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.
Isabella Thomas –
I was looking for high-quality roof windows for my parents’ home renovation project in Newcastle, and this company delivered exactly what I needed. The skylights are durable, stylish, and have completely transformed our living space.
Simon Patterson –
The addition of a skylight has made our living room the heart of our home. The natural light enhances the decor and creates a warm, welcoming atmosphere.
Eoghan McManus –
The flat roof skylight is perfect for our Edinburgh home. It adds light to the once-dull hallway and has really changed the atmosphere of the house.