Flat Roof Skylight 1200 x 1200 mm, Fixed, Frameless, Triple Glazed,72.60kg, UV 0.9
Original price was: £ 676.00.£ 473.00Current price is: £ 473.00. incl. VAT
15 in stock (can be backordered)
Prices go up when the timer hits zero.
Regal Glass Group: A trusted manufacturer of premium roof windows
Built to prevent leaks—trusted rooflights by Regal Glass Group.
Type: Fixed Frameless Flat Roof Skylight
Internal Size: 1200 x 1200 mm
External Size: 1400 x 1400 mm
Glazing Type: Triple Glazed
Net Weight: 72.60kg
U Value: 0.9 W/m²K
G Value: 58%
Light transmittance : τv [%] 72
Sound reduction (EN 12758): 39dB
UV transmission : τuv [%] 0
Leakproof Design
Experience the excellence of Regal Glass Group’s roof windows, featuring these impressive technical characteristics.
Sold By Manufacturer
15 in stock (can be backordered)
13 in stock (can be backordered)
ACTIVE PROMOTION
Use Code: TODAYONLY
Payment Methods:
Get a Bundle with 15% Discount
Flat Roof Skylight 1200 x 1200 mm, Fixed, Frameless, Triple Glazed,72.60kg, UV 0.9
Inclined Insulated Upstand for Flat Roof Skylight 1200 x 1200 mm
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 12150
- Bottom Pane: Stratobel Clearlite 44.2 / Laminated glass EN 14449
Premium Flat Roof Skylights
Considering a windows in roof but concerned about heat loss? Our Flat Roof Skylight 1200 x 1200 mm boasts 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 bathing your room in natural light!
Why Choose Our Frameless Flat Roof Windows
- Energy Efficiency: Experience exceptional thermal performance with triple-glazed units and warm edge spacer technology, delivering a U-value of 0.9 W/m²K for year-round comfort and energy savings.
- Unobstructed Views: Maximize natural light penetration and enjoy panoramic sky views with our frameless design.
- Self-Cleaning Convenience: Maintain pristine 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 flat roof skylight setup with essential accessories for easy windows for flat roofs installation and peak performance:
- Inclined Insulated Upstand for Flat Roof Skylight 1200x1200mm: Simplifies installation with pre-fabricated units made from strong, bonded wood veneers.
- Skylight Blinds for Flat Roof Window 1200x1200mm: Tailored blinds for light control and privacy, ensuring a perfect fit.
- Installation Kit for 1 x Flat Roof Skylight 1200x1200mm: Comprehensive kit for secure, stress-free installation.
- Foam Rope – Structural Glazing Tape – 9mm Thick (7.5m Rolls): Provides sealing and support during installation.
- Weatherproofing Sealant (Silicon) – DOWSIL™ 791, 310ml: Ensures a durable, weatherproof seal around your skylight.
- Self-Cleaning Liquid Smart Glass Bottle 15ml: Restores self-cleaning properties for effortless maintenance.
Choose Regal Glass Skylight Windows
Explore our range of standard and custom rooflights for flat roofs designed to enhance your space:
- Exceptional Thermal Performance: Triple glazing maintains comfortable indoor temperatures year-round.
- Natural Light Abundance: Floods your interior with beautiful, inviting natural light.
- Elegant Design: Sleek, modern designs 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 1200 x 1200 mm Roof Lights Near Me
Searching for 1200 x 1200 mm skylights near you? Also called a 1.2 x 1.2 m flat rooflight, this balanced square option works beautifully in living rooms, staircases, or studio spaces. Regal Glass Group offers flat roof lights that combine exceptional energy performance with minimalist design.
✅ Custom Sizes & Bespoke Glass Options
✅ Trusted by 1,200+ UK Homeowners & Trades
✅ Installer Support Available – We’re Here to Help
✅ 20-Year Warranty Included
✅ Fast Nationwide Delivery
Built to UKCA standards and glazed for clarity and insulation, this skylight is a popular choice among architects and homeowners looking for maximum light and minimal fuss.
| Weight | 72.60 kg |
|---|---|
| Dimensions | 145 × 10 × 145 cm |
| Brand |
Regal Glass |
| Manufacturer | |
| Internal Size |
1200 x 1200 mm |
| External Size |
1400 x 1400 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 |
Delivery Times:
- Standard Size Flat & Pitched Skylights: Typically delivered within 3 to 6 working days.
- Custom Size Orders: Production and delivery to the UK take approximately 3 to 6 weeks. Delivery is free of charge.
- Roof Lanterns: Delivered within 10-14 working days from the date of order.
- Framed Skylights: Delivered within 10-14 working days from the date of order.
- Electric Opening Skylights: Delivered within 10-14 working days from the date of order.
- Walk-On Skylights: Delivered within 10-14 working days from the date of order.
- Skylight Blinds: Delivered within 10-14 working days from the date of order.
Delivery Hours:
- Monday to Friday, between 8 am and 5 pm.
Once your payment has been processed, we will contact you to arrange a convenient delivery time.
Placing an Order: To view delivery costs, please add your desired products to the cart and enter the shipping address.
Delivery Areas:
- Within London (M25): Our dedicated drivers ensure safe delivery. Please ensure that you or your builders are present to accept the delivery, as our drivers work alone and the vehicles are pre-loaded.
- Outside London (M25): We utilize an external shipping network. The courier will contact you to schedule a suitable delivery time.
- Extra Economy Shipping: Available for all areas except Northern Ireland and Scotland. In rare cases, delivery may be to a local depot if suitable vehicles are unavailable.
Important Notes:
- Many of our products are heavy, ranging from 10kg to 280kg. Depending on the size and weight, additional help may be required for unloading (2-6 people).
- We are not liable for any damage during unloading. It is the customer's responsibility to manage this process.
- If no one is present to receive the delivery, our driver will attempt to contact you via phone, text, or voicemail. If contact cannot be made, the product will be returned to our warehouse.
Why Choose Our Insulated OSB Upstands?
Before and After
See how a space is completely transformed with a Regal Glass skylight.
- Maximum daylight
- Modern minimalist design
- Superior insulation & UV protection
One change. Total transformation. Choose Regal Glass Group.
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.
Frameless Skylights Glass Performance
Experience the perfect blend of natural light, energy efficiency, noise reduction, and UV protection with our precision-engineered glass.
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.
Easy to replicate
Installation Guide
Dive into our user-friendly Installation Guide for a smooth skylight setup. Get the clarity you need, step-by-step.
Click below to explore the full guide.
Reviews
19 reviews for Flat Roof Skylight 1200 x 1200 mm, Fixed, Frameless, Triple Glazed,72.60kg, UV 0.9
Clear filtersRelated Products
Flat Roof Skylight 300 x 300 mm, Fixed, Frameless Triple Glazed, 6.45kg, UV 0.9
Original price was: £ 185.00.£ 120.00Current price is: £ 120.00. incl. VAT
Flat Roof Skylight 400 x 400 mm, Frameless Triple Glazed, 10.20kg, UV 0.9
Original price was: £ 274.00.£ 186.00Current price is: £ 186.00. incl. VAT
Flat Roof Skylight 500 x 500 mm, Fixed, Frameless, Triple Glazed, 14.85kg, UV 0.9
Original price was: £ 280.00.£ 212.00Current price is: £ 212.00. incl. VAT
Flat Roof Skylight 600 x 600 mm, Fixed, Frameless, Triple Glazed, 20.40kg, UV 0.9
Original price was: £ 390.00.£ 231.24Current price is: £ 231.24. incl. VAT
Flat Roof Skylight 600 x 900 mm, Fixed, Frameless, Triple Glazed, 29.40kg, UV 0.9
Original price was: £ 490.00.£ 353.00Current price is: £ 353.00. incl. VAT
Flat Roof Skylight 600 x 1200 mm, Fixed, Frameless, Triple Glazed, 38.40kg, UV 0.9
Original price was: £ 580.00.£ 417.36Current price is: £ 417.36. incl. VATFAQ
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.
Ethan Carter –
Our living room’s new 1200 x 1200 mm skylight has become the centerpiece of our home. It’s amazing how much natural light it brings in.
Finn Perez –
I was looking for a 1200 x 1200 skylight for our entryway in Glasgow. When I ordered it from your website I didn’t expect it to transform our staircase into a radiant welcome for all our guests. Brilliant work by Regal Glass!
Muhammad Wilson –
Installed an attic skylight, and it’s like a whole new room up there now. The amount of daylight it brings into the space is just what I was looking for. Regal Glass Group did a fantastic job – would recommend them!
Grace Cook –
I spent so much time looking for a frameless skylight in Glasgow. Then I found skylights.co.uk and ordered the 1200 x 1200 flat roof skylight. Guess what? It has elevated the entire feel of my room. Very grateful to you guys!
Jack Highmore –
Superb! It transformed our loft into a bright space.
Jessica Blackwood –
It looks and functions perfectly.
Ben Ellsworth –
We’ve had so many compliments on our new rooflight!
Harvey Stratton –
Great build, excellent insulation, and stylish design!
Joshua Picked –
The best home improvement purchase we’ve made!
Bilal Ansari –
Our fixed roof light in the bedroom has made it much brighter. The room feels more inviting now.
Mira Kapoor –
The frameless roof window in our dining room looks fantastic. It’s sleek, modern, and brings in a perfect amount of light.
Eleanor Kenworthy –
It’s the perfect touch to our home extension.
Freya Lockwood –
Our extension now feels twice the size thanks to the flat roof window.
Nathan Halbrook –
Our bathroom is now beautifully bright. Love this rooflight!
Olivia Brieff –
Installation was straightforward, and the result is amazing.
Maddie Rockwell –
The roof window is stylish and keeps our home warm.
George Kingsley –
Fantastic design, easy installation, and looks brilliant!
Harvey Kingsland –
A great investment.
Hannah Oakley –
Looks fantastic, and the natural light makes a huge difference.