

Pitched Roof Skylight 800 x 1200 mm, Fixed, Frameless, Triple Glazed, 49.80kg, UV 0.9
£ 710.00 Original price was: £ 710.00.£ 435.90Current price is: £ 435.90. incl. VAT
Prices go up when the timer hits zero.
47 in stock (can be backordered)
Skylights.co.uk: Trusted rooflights. Built to prevent leaks.
Type: Fixed Frameless Pitched Roof Skylight
Internal Size: 800 x 1200 mm
External Size: 1000 x 1400 mm
Glazing Type: Triple Glazed
Net Weight: 49.80kg
U Value: 0.9 W/m²K
G Value: 58%
Light transmittance : τv [%] 72
Sound reduction (EN 12758): 39dB
UV transmission : τuv [%] 0
Roof Pitch Range: 6° to 45°
Premium Pitched Roof Skylights
Introducing the Pitched Roof Skylight 800 x 1200 mm, a fusion of modern design and exceptional functionality. With over 20 years of expertise in crafting superior skylights, we have masterfully combined aesthetics and practicality to create a skylight that not only floods your home with natural light but also serves as an elegant minimalist feature.
Why Choose Our Frameless Pitched Roof Windows
Energy Efficiency: Experience top-notch thermal performance with our advanced triple-glazed units and a 15-millimeter warm edge spacer filled with Argon gas. This cutting-edge setup achieves an impressive U-value of 0.9 W/m²K, ensuring your home remains comfortable year-round while reducing energy bills.
Unobstructed Views: The frameless, minimalist design maximizes the penetration of natural light, offering stunning panoramic views of the sky and blending seamlessly with your pitched roof’s architecture.
Self-Cleaning Convenience: Enjoy effortless maintenance with a sunlight-activated self-cleaning feature that keeps the glass spotless and clear.
Versatile Installation: Suitable for roof pitches ranging from 6° to 45°, making it adaptable to various home designs.
Peaceful Ambiance: Benefit from effective soundproofing, creating a quieter and more tranquil indoor environment.
Sun Safety: Protect your interiors from harmful UV rays, preserving your furnishings.
Safety First: Constructed with safety-toughened glass to provide ultimate peace of mind.
Regulation Compliant: Conforms to all British Standards & Building Regulations and carries the CE safety marking. Supported by a robust 20-year warranty, our skylights are designed for durability and long-lasting performance.
Essential Skylight Accessories
Enhance your pitched roof skylight experience with these essential accessories for seamless rooflight installation and optimal performance:
Skylight Blinds for Pitched Roof Window 800 x 1200 mm: Custom blinds designed to fit your skylight perfectly, giving you control over light and privacy to create the desired atmosphere in your space.
Installation kit for 1 x Pitched Roof Skylight 800 x 1200 mm (for a slate roof) or Installation kit for 1 x Pitched Roof Skylight 800 x 1200 mm (for a tiled roof): Comprehensive kits that ensure secure and stress-free installation, maximizing the skylight’s performance.
Foam Rope – Structural Glazing Tape – 9mm Thick (7.5m Rolls): High-quality tape offering effective sealing and structural support during installation.
Weatherproofing Sealant (Silicon) – DOWSIL™ 791, 310ml: A durable sealant providing a weatherproof finish, protecting against the elements and ensuring a comfortable indoor environment.
Lead Flashing Smooth 45cm x 5m Roll Grey – Easy-Trim and Lead Flashing Textured 45cm x 5m Roll Grey – Easy-Trim: BBA-certified lead replacement, versatile for both pitched and flat roof applications.
Self-Cleaning Liquid Smart Glass Bottle 15ml: A special solution to maintain the self-cleaning properties of your skylight, ensuring clear, sparkling glass with minimal effort.
Our Pitched 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

Choose Skylights.co.uk
We offer an extensive range of standard sizes, including the popular 1200 x 800 mm skylight and 1.2 x 0.8 m roof light, as well as fully custom skylights to find the ideal pitched roof skylight for your project. Our skylights provide exceptional energy efficiency with triple glazing, enhancing your space with natural light and modern elegance.
Download our full product catalogue to explore our extensive range and find the perfect solution for your needs. Ready to discuss your skylight requirements? Contact us today!
Can I install Pitched Roof Skylight 800 x 1200 mm myself
We provide DIY installation videos and pdf guides for all their Skylights range, as well as the 800 x 1200 mm you are searching for.
🗺️ 800 x 1200 mm Pitched Roof Lights Near Me
Looking for 800 x 1200 mm pitched roof lights near you? Also referred to as a 0.8 x 1.2 m roof light, this generous size is ideal for lofted kitchens, vaulted ceiling extensions, or open-plan living areas where daylight is essential. We supply high-performance pitched roof windows that offer excellent thermal control, modern design, and lasting durability.
✅ Saves Up to 10% on Energy Bills
✅ Installer Support Available – We’re Here to Help
✅ Secure Checkout & Multiple Payment Options
✅ Trusted by Builders & Architects Nationwide
✅ Custom & Stock Sizes Ready to Ship
Fully UKCA-certified and weather-sealed for pitched installations, our skylights are made to meet the demands of homes and commercial spaces alike—delivered across the UK with care and speed.
Weight | 49.80 kg |
---|---|
Dimensions | 55 × 10 × 55 cm |
Brand |
Skylights.co.uk |
Color |
Clear |
Internal Size |
800 x 1200 mm |
External Size |
1000 x 1400 mm |
Glazing Type | |
Glass Tint | |
Self-Cleaning: |
Yes |
Roof Type |
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 |
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47 in stock (can be backordered)
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Our triple-glazed pitched roof skylights flood your space with natural light while delivering exceptional thermal efficiency. Pair them with our separately sold Insulated Upstand, featuring 40mm core insulation to minimize heat loss and cut energy costs.
Why Choose Our Insulated OSB Upstands?



Brighten Your Home & Save – Bundle and Save!
Upgrade to our triple-glazed pitched roof skylights for stunning natural light and superior energy efficiency.
Add our Insulated Upstand and save up to 7% when you bundle!
✔️ Maximize thermal performance
✔️ Lower your energy bills
✔️ Enjoy long-lasting durability
Get the complete, premium solution for less – bundle your skylight and upstand today!
Get a Bundle with extra 7 % Discount on Skylight and Upstand
Pitched Roof Skylight 800 x 1200 mm, Fixed, Frameless, Triple Glazed, 49.80kg, UV 0.9
Insulated Upstand for Pitched Roof Skylight 800 x 1200 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
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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.
FAQ
Yes. This unit is designed for pitched roofs between 6° and 45° and is compatible with both tile and slate. We also supply flat roof options separately.
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, our skylights can be installed on both cold and warm roof types.
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.
Rory Hamilton –
The energy efficiency of KingsView Glass skylights is a major selling point. Clients love the savings on their energy bills and the added comfort in their homes.
Lucy Thompson –
Our bespoke-sized pitched roof skylight fits perfectly in our quirky roof space. Kings View made the process so easy, and the result is stunning.
Tobias Knight –
The addition of an 800 x 1200 skylight has brought new life to our living room. The energy efficiency is a welcome bonus.
Arlo McCoy –
Our living room’s transformation with an 800 x 1200 skylight is incredible. The light it brings in makes the space so much more welcoming.
Eva Green –
Absolutely thrilled with the 800 x 1200 mm pitched roof skylight! It has completely transformed our attic space into a bright and airy room. The installation was seamless, and the customer service was top-notch. Highly recommend!
Ellie Woodward –
Added an 800×1200 mm skylight to our kitchen, and it’s like a whole new room. Morning coffees are so much more enjoyable with sunbeams streaming in. The UV protection is a bonus, keeping the furnishings from fading.
Harriet Jadon –
Just had a 800 x 1200 mm pitched roof skylight fitted in our new kitchen extension in Bristol. The extra light has transformed the space completely. Fantastic product and excellent customer service from KingsView Glass!
Connor Edwards –
Absolutely thrilled with the 800 x 1200 mm pitched roof skylight! It has completely transformed our attic space into a bright and airy room. The installation was seamless, and the customer service was top-notch. Highly recommend!