Pitched Roof Skylight 1200 x 2500 mm, Fixed, Frameless, Triple Glazed, 161.70kg, UV 0.9
Original price was: £ 1.970.00.£ 1.410.00Current price is: £ 1.410.00. incl. VAT
Prices go up when the timer hits zero.
13 in stock (can be backordered)
Skylights.co.uk: Trusted rooflights. Built to prevent leaks.
Type: Fixed Frameless Pitched Roof Skylight
Internal Size: 1200 x 2500 mm
External Size: 1400 x 2700 mm
Glazing Type: Triple Glazed
Net Weight: 161.70kg
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
Transform your space with natural light using the Pitched Roof Skylight 1200 x 2500 mm. This architectural marvel merges design and functionality seamlessly. Our 20+ years of expertise in crafting premium skylights is evident in this product, offering beautiful natural illumination year-round and a stunning minimalist aesthetic that complements your existing roofline.
Why Choose Our Frameless Pitched Roof Windows
Unparalleled Performance:
- Exceptional Thermal Efficiency: Advanced triple-glazed units with a 15mm warm edge spacer filled with Argon gas achieve an impressive U-value of 0.9 W/m²K. Enjoy significant energy bill reductions and year-round comfort in your home.
- Unobstructed Views: The frameless design maximizes natural light penetration, offering breathtaking panoramic vistas and a sleek, minimalist aesthetic that integrates seamlessly with your pitched roof’s architecture.
- Effortless Maintenance: Enjoy spotless glass with our self-cleaning technology, activated by sunlight for minimal upkeep.
Additional Benefits:
- Versatile Installation: Suitable for roof pitches between 6° and 45°, making it a great fit for many homes.
- Peaceful Ambiance: Provides effective soundproofing for a quieter indoor environment.
- Sun Safety: Offers protection against harmful UV rays, safeguarding your interiors.
- Safety First: Constructed with safety-toughened glass for ultimate peace of mind.
- Regulation Compliant: Meets all British Standards & Building Regulations and carries the CE safety marking.
Backed by a 20-year warranty, our skylights are a testament to superior durability and performance.
Essential Skylight Accessories
Enhance your pitched roof skylight experience with these essential add-ons for a seamless installation and optimal performance:
- Skylight Blinds for Pitched Roof Window 1200 x 2500 mm: Maintain complete control over light and privacy with blinds designed specifically for your skylight size.
- Installation kit for 1 x Pitched Roof Skylight 1200x2500mm (for a slate roof) or Installation kit for 1 x Pitched Roof Skylight 1200x2500mm (for a tiled roof): Everything you need for a secure and stress-free installation.
- Foam Rope – Structural Glazing Tape – 9mm Thick (7.5m Rolls): Provides both effective sealing and structural support during installation.
- Weatherproofing Sealant (Silicon) – DOWSIL™ 791, 310ml: Ensures a watertight seal around your skylight for lasting peace of mind.
- 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 for pitched roof applications.
- Self-Cleaning Liquid Smart Glass Bottle 15ml: Replenishes the self-cleaning properties of your skylight for effortless maintenance.
Our Pitched 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 Planibel Clearlite / Thermally toughened glass BS EN 12150
- Bottom Pane: 6 mm iplus Thermally toughened glass with Low-E coating EN 12150
Choose Skylights.co.uk
We offer an extensive range of standard sizes, including the popular 2500 x 1200 mm skylight (also known as 2.5 x 1.2 m roof light), as well as fully custom skylights to suit your specific needs.
Download our full product catalogue to explore our extensive Pitched Roof skylight range and find the perfect solution for your project.
Ready to discuss your skylight needs? Contact us today!
What's the installation process for Pitched roof windows 1200 x 2500 mm
We provide detailed installation guides for all ranges of their roof windows. You can watch the video or read the instructions.
🗺️ 1200 x 2500 mm Pitched Roof Lights Near Me
Looking to buy a 1200 x 2500 mm pitched roof light near you? Also known as a 1.2 x 2.5 m large skylight, this impressive format is perfect for pitched roof kitchens, vaulted loft conversions, and expansive architectural interiors. We craft frameless pitched roof windows that offer show-stopping daylight, structural strength, and energy-saving performance.
✅ Bespoke Large Skylight – Designed for Impact
✅ Triple Glazed – Excellent Thermal Control
✅ Built for UK Weather – Condensation-Free Design
✅ Fast UK Delivery from Our In-House Factory
✅ 20-Year Guarantee – No Hidden Terms
Each skylight is UKCA-certified, engineered for pitched roof integration, and delivered across the UK with care—ready to bring clarity, scale, and modern elegance to your next big build.
| Weight | 108 kg |
|---|---|
| Dimensions | 55 × 10 × 55 cm |
| Color |
Clear |
| Internal Size |
1200 x 2500 mm |
| External Size |
1400 x 2700 mm |
| Glazing Type | |
| Glass Tint | |
| Self-Cleaning: |
Yes |
| Roof Type |
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 Planibel Clearlite / Thermally toughened glass EN 12150 |
| Air Gap |
16 mm Argon 90% |
| Bottom Glass Pane: |
6 mm iplus 1.1 pos.5 Thermally toughened glass with Low-E coating 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
13 in stock (can be backordered)
Available on back-order
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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 1200 x 2500 mm, Fixed, Frameless, Triple Glazed, 161.70kg, UV 0.9
Original price was: £ 1.970.00.£ 1.311.30Current price is: £ 1.311.30. incl. VAT
Insulated Upstand for Pitched Roof Skylight 1200 x 2500 mm
Original price was: £ 231.20.£ 172.01Current price is: £ 172.01. 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.
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.
Angus McCarthy –
Installed a pitched skylight, and it’s been the best decision for our living room. The natural light enhancement is unparalleled.
Ashley Johnson –
The installation of a roof window in our bedroom was smooth and hassle-free, thanks to Regal Glass Group. The difference it’s made is night and day.
Sophie Ellis –
In Leeds, we’re no strangers to gloomy days, but our new large skylight from Regal Glass has made such a difference! Even on overcast days, our living room is bright and inviting.
Sean Fraser –
Installed a 1200×2500 mm skylight in a client’s home and the feedback has been phenomenal. The natural light and the elegance it adds to the space is just unmatched. Proud to work with such high-standard products.