Flat Roof Skylight 800 x 1000 mm Original price was: £ 562,00.Current price is: £ 482,00. incl. VAT
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Flat Roof Skylight 800 x 1500 mm Original price was: £ 567,00.Current price is: £ 527,00. incl. VAT

Flat Roof Skylight 800 x 1200 mm

Original price was: £ 575,00.Current price is: £ 515,00. incl. VAT

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Regal Glass Group: A trusted manufacturer of premium roof windows

Type: Fixed Frameless Flat 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

Experience the excellence of Regal Glass Group’s roof windows, featuring these impressive technical characteristics.

Original price was: £ 470,00.Current price is: £ 376,80. incl. VAT
Original price was: £ 678,00.Current price is: £ 578,00. incl. VAT
£ 54,00 incl. VAT
£ 24,00 incl. VAT
£ 15,00 incl. VAT
£ 30,00 incl. VAT

Payment Methods:

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Easy Returns

Hassle-free returns within 30 days.

10 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.

Modern Design
Solar energy transmittance (G value): g [%] 65
UV transmission : 0 τuv [%]
Light transmittance: τv [%] 72
Thermal transmittance (U value): : 0.9 [W/(m².K)]
Min 3.0 [W/(m².K)] / Max 0.1 [W/(m².K)] 70%
Shading coefficient: 0.66 SC
( Maximum SC 1.00 / Maximum SC 0.20 ) 42%
Sound Reduction: 39 dB (-2;-7)
( Maximum 40dB / Minimum 30dB ) 90%

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.

Discover the Flat Roof Skylight 800 x 1200 mm from Regal Glass Group, an exemplar of architectural beauty and efficiency. This skylight window is meticulously designed to illuminate your flat-roofed spaces with an abundance of daylight, ensuring a harmonious blend of functionality and elegance. With every aspect from design to production handled with the utmost care, this skylight is a reflection of our commitment to excellence.

Featuring advanced triple-glazed units, the skylight achieves exceptional thermal performance, as evidenced by its impressive U-value of 0.9 W/m²K. This thermal efficiency is achieved through the use of a 15-millimeter warm Edge spacer, filled with Argon gas, strategically placed between the glass panes to minimize heat transfer, thereby ensuring a comfortable indoor environment year-round.

The Flat Roof Skylight 800 x 1200 mm is a product of our in-house production process, which allows us to maintain strict quality control, ensuring that each skylight meets our high standards. This commitment to quality ensures that the skylight not only enhances the aesthetic appeal of your space but also stands the test of time with its durability and performance.

With its frameless design, the skylight offers a sleek, modern aesthetic that maximizes the flow of natural light, making interiors brighter and more inviting. The self-cleaning feature, activated by sunlight, further adds to the convenience, ensuring that maintenance is minimal and your views remain unobstructed.

Versatile in its installation, this skylight is suitable for pitches ranging from 6° to 45°, accommodating various architectural styles. Beyond its visual appeal, the skylight provides sound insulation, UV protection with a τuv [%] of 0, ensuring your space is not only illuminated but also protected from harmful UV rays. The skylight is constructed with safety toughened glass, enhancing the security of your installation.

This skylight is compliant with British Standards & Building Regulations, features all necessary Safety Markings, and is CE marked, indicating compliance with EU quality and safety standards. With a 20-year warranty on the seal, it offers peace of mind, ensuring that the skylight remains airtight and performs optimally over time.

At Regal Glass Group, we understand the importance of choice and customization. That’s why, in addition to our range of standard size skylights that are readily available in stock, we proudly offer custom skylight solutions tailored to your unique requirements. Whether you’re enhancing a residential space or illuminating a commercial venue, our skylights are designed to bring light, elegance, and efficiency to any setting.


49 , 80 kg


145 × 10 × 105 cm


Regal Glass


Regal Glass Group Ltd

Internal Size

800 x 1200 mm

External Size

1000 x 1400 mm

Glazing Type

Triple glazed

Glass Tint

Clear Tint



Roof Type

Flat Roof , Pitched Roof

Skylight Type


Top Glass Pane:

6 mm Planibel Clearlite / Thermally toughened

Air Gap

16 mm Argon 90%

Middle Glass Pane:

4 mm Planibel Clearlite Thermally toughened

Air Gap

16 mm Argon 90%

Bottom Glass Pane:

Stratobel Clearlite 44.2 with iplus 1.1 pos.5

Spacer Type

15mm Black Warm Edge

U value

0.9 [W/(m².K)]

Sound reduction - EN 12758

[dB] 39 (-2;-7)

Light transmittance: tv [%]


External light refection : ρv [%]


Internal light refection : ρvi [%]


Colour rendering index : Ra [%]


Solar energy transmittance : g [%]


Shading coefcient : SC




UV transmission : τuv [%]



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