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£ 988.00 Original price was: £ 988.00.£ 719.00Current price is: £ 719.00. incl. VAT
24 in stock (can be backordered)
Prices go up when the timer hits zero.
Regal Glass Group: A trusted manufacturer of premium roof windows
Type: Fixed Frameless Flat Roof Skylight
Internal Size: 1200 x 1800 mm
External Size: 1400 x 2000 mm
Glazing Type: Triple Glazed
Net Weight: 106.80kg
U Value: 0.9 W/m²K
G Value: 58%
Light transmittance : τv [%] 72
Sound reduction (EN 12758): 39dB
UV transmission : τuv [%] 0
Experience the excellence of Regal Glass Group’s roof windows, featuring these impressive technical characteristics.
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24 in stock (can be backordered)
12 in stock (can be backordered)
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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 about adding a flat roof windows skylights but worried about heat loss? Our Flat Roof Skylight 1200 x 1800 mm features an impressive U-value of 0.9 W/m²K, thanks to its triple-glazed units and warm edge spacer technology. This provides superior insulation, keeping your space warm in winter and cool in summer, while allowing in abundant natural light.
Why Choose Our Frameless Flat Roof Windows
- Energy Efficiency: Experience outstanding thermal performance with our triple-glazed units and warm edge spacer technology, resulting in a U-value of 0.9 W/m²K for year-round comfort and reduced energy expenses.
- Unobstructed Views: The frameless design maximizes natural light penetration and offers breathtaking panoramic views of the sky.
- Self-Cleaning Feature: Enjoy easy maintenance with a sunlight-activated self-cleaning feature that keeps your glass sparkling clean.
- Versatile Installation: Ideal for flat roofs with pitches between 6° and 45°, making it suitable for various home styles.
- Quiet Ambiance: Effective soundproofing ensures a peaceful indoor environment.
- UV Protection: Safeguards your interior from harmful UV rays.
- Safety First: Built with safety-toughened glass for enhanced security.
- Regulation Compliant: Fully compliant with British Standards & Building Regulations and carries the CE safety marking.
Essential Skylight Accessories
Enhance your flat roof skylight experience with these must-have accessories for smooth installation and optimal performance:
- Skylight Blinds for Flat Roof Window 1200x1800mm: Custom-fit blinds provide light control and privacy, perfectly tailored to your skylight size.
- Installation Kit for 1 x Flat Roof Skylight 1200x1800mm: A comprehensive kit that ensures secure and hassle-free installation for optimal performance and durability.
- Foam Rope – Structural Glazing Tape – 9mm Thick (7.5m Rolls): Offers 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 Regal Glass Skylight Windows
We offer a variety of standard sizes readily available for purchase, along with custom skylights tailored to your specific needs. No matter the project, our flat rooflights provide exceptional thermal performance with innovative features like triple glazing, ensuring your space remains comfortable year-round. They also flood your space with beautiful natural light, creating a brighter and more inviting atmosphere. Enhance any setting with the sleek, modern design of our flat rooflights.
Download our full product catalogue to explore our extensive Flat Roof skylight range and find the perfect solution for your project. Ready to discuss your skylight needs? Contact us today!
I need to find 1200 x 1800 mm flat roof skylights near me today
Regal Glass makes skylights and has over 20 years of experience. Find 1200x1800mm size and installation info on their website.
Weight | 108 kg |
---|---|
Dimensions | 205 × 10 × 145 cm |
Brand |
Regal Glass |
Manufacturer | |
Internal Size |
1200 x 1800 mm |
External Size |
1400 x 2000 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 |
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.

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.

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.
Henry Lewis –
The flat roof windows have transformed our interior. The quality is incredible and the delivery was quick.
Isabella Clark –
The flat roof windows arrived in perfect condition and the quality is exceptional. Very good purchase.
Samuel Allen –
The quality of the flat roof skylights is incredible. The customer service is very friendly and professional.
George Turner –
I am very pleased with the flat roof skylights. The quality is superior and the delivery was very fast. Highly recommended.
Chloe Wright –
The flat roof windows have given new life to our house. The delivery was quick and the customer service was excellent.
Sinead McCrory –
Our flat roof skylight in Leeds has given our home such a modern look. The natural light it lets in has completely transformed our kitchen.