

Flat Roof Skylight 500 x 3000 mm, Fixed, Frameless, Triple Glazed, 80kg, UV 0.9
£ 1.105.00 Original price was: £ 1.105.00.£ 709.00Current price is: £ 709.00. incl. VAT
Prices go up when the timer hits zero.
17 in stock (can be backordered)
Skylights.co.uk: Trusted rooflights. Built to prevent leaks.
Type: Fixed Frameless Flat Roof Skylight
Internal Size: 500 x 3000 mm
External Size: 700 x 3200 mm
Glazing Type: Triple Glazed
Net Weight:80kg
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, compliant with BS EN 12150
- Middle Pane: 4 mm Planibel Clearlite / Thermally toughened glass, compliant with BS EN 12150
- Bottom Pane: Stratobel Clearlite 44.2 iplus 1.1 / Laminated glass with Low-E coating, compliant with EN 14449
Premium Flat Roof Skylights
Thinking of installing a skylight but worried about heat loss? Our Flat Roof Skylight measuring 500 x 3000 mm delivers an exceptional U-value of 0.9 W/m²K. This is achieved through triple-glazed units and warm edge spacer technology, ensuring your space stays warm in winter, cool in summer, and filled with natural light.
Why Choose Our Frameless Flat Roof Windows
- Energy Efficiency: Achieve outstanding 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 lower energy bills.
- Unobstructed Views: The frameless design maximizes natural light and offers breathtaking panoramic sky views.
- Self-Cleaning Feature: Keep your glass effortlessly clean with a sunlight-activated self-cleaning feature.
- Versatile Installation: Suitable for flat roofs with pitches between 6° and 45°, fitting a variety of home styles.
- Quiet Ambiance: Effective soundproofing ensures a peaceful indoor environment.
- UV Protection: Shields your interior from harmful UV rays.
- Safety First: Constructed with safety-toughened glass for enhanced security.
- Regulation Compliant: Meets all British Standards & Building Regulations and carries the CE safety marking.
Essential Skylight Accessories
Enhance your flat roof skylight with these must-have accessories for seamless roof window installation and peak performance:
- Skylight Blinds for Flat Roof Window 500x3000mm: Custom-fit blinds provide light control and privacy, tailored specifically for your skylight size.
- Installation Kit for 1 x Flat Roof Skylight 500x3000mm: A comprehensive kit for secure, hassle-free installation, ensuring optimal performance and durability.
- Foam Rope – Structural Glazing Tape – 9mm Thick (7.5m Rolls): Provides effective sealing and structural support during installation.
- Weatherproofing Sealant (Silicon) – DOWSIL™ 791, 310ml: Creates a durable, weatherproof seal around your skylight, keeping the elements out.
- Self-Cleaning Liquid Smart Glass Bottle 15ml: Replenishes the self-cleaning properties of your skylight, ensuring easy maintenance and spotless glass.
Choose Skylights.co.uk
We offer an extensive range of standard sizes, including the popular 3000 x 500 mm skylight (also known as 3 x 0.5 m roof light), as well as fully custom skylights tailored to your specific requirements. Our flat rooflights provide:
- Exceptional Thermal Performance: Triple glazing ensures superior insulation and year-round comfort.
- Natural Light Abundance: Floods your space with beautiful natural light, creating a bright and inviting atmosphere.
- Elegant Design: Sleek, modern designs that add a touch of sophistication to any setting.
Download our full product catalogue to explore our extensive range of flat roof skylights and find the perfect solution for your project.
Ready to discuss your skylight needs? Contact us today!
🗺️ Where to Buy 500 x 3000 mm Skylights Near Me
Need a 500 x 3000 mm roof light near you? Also known as a 0.5 x 3 m large skylight, this dramatic format delivers panoramic daylight and architectural finesse to extensions, home offices, or gallery-like interiors. We offer frameless roof lights that combine premium glazing with effortless style.
✅ Large Skylight – Full-Length Feature Lighting
✅ Custom Sizes Made In-House
✅ 20-Year Warranty – No Hidden Costs
✅ Next-Day Delivery on Select Models
✅ Highly Rated by Builders & Designers Nationwide
Every skylight is manufactured to exacting standards with UKCA certification and designed to meet the demands of premium residential and trade projects.
Weight | 108 kg |
---|---|
Dimensions | 205 × 10 × 145 cm |
Brand |
Skylights.co.uk |
Internal Size |
500 x 3000 mm |
External Size |
700 x 3200 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: |
4 mm Planibel Clearlite / Thermally toughened glass |
Air Gap |
16 mm Argon 90% |
Bottom Glass Pane: |
Stratobel Clearlite 44.2 iplus 1.1 pos.5 / Laminated glass with Low-E coating EN 14449 |
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
17 in stock (can be backordered)
16 in stock (can be backordered)
ACTIVE PROMOTION
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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 500 x 3000 mm, Fixed, Frameless, Triple Glazed, 80kg, UV 0.9
Inclined Insulated Upstand for Flat Roof Skylight 500 x 3000 mm


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.
Isla Torres –
The difference my skylight from Skylights.co.uk has made is incredible. My living room has been turned into a bright and airy space, all thanks to their high-quality roof lights.
Samuel Parker –
I have considered installing a skylight in our staircase for a long time now. Our new rooflight from KingsView has become the talk of the town. Absolutely love it!
Liam Murphy –
The 500 x 3000 skylight over our staircase floods the space with light, making it look larger and more inviting.
Scott McLaren –
In Dundee, we’ve added a flat roof skylight to our home extension, and it has completely transformed the space. Highly recommend!
Ella Simpson –
Great service and a fantastic product. The skylight was delivered quickly and has brought so much light into our living room.
Ethan Clark –
Couldn’t be happier with our new skylight. It has made our kitchen so much brighter, and the quality is outstanding. Fast delivery too!
Nia Thomas –
Couldn’t be happier with our frameless roof light. It’s made our bathroom feel much more open and airy. The service was excellent too!
Isla Middleton –
Excellent service and a high-quality skylight. It has exceeded expectations.
James Stewart –
Frameless roof windows were exactly what we needed. They look great and bring in so much natural light.
Sophie Turner –
Very happy with the skylight. It makes our living room feel much bigger, and the amount of light it brings in is perfect. Delivery was fast!
James Foster –
Our skylight was delivered quickly, and it has completely changed the atmosphere in our kitchen. The natural light it introduces is fantastic.