Flat Roof Skylight 800 x 1500 mm Original price was: £ 615,00.Current price is: £ 507,00. incl. VAT
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Flat Roof Skylight 800 x 2000 mm Original price was: £ 731,00.Current price is: £ 587,00. incl. VAT

Flat Roof Skylight 800 x 1800 mm

Original price was: £ 660,00.Current price is: £ 546,00. 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 1800 mm
External Size: 1000 x 2000 mm
Glazing Type: Triple Glazed
Net Weight: 73.20kg
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.

This item: Flat Roof Skylight 800 x 1800 mm
Original price was: £ 660,00.Current price is: £ 546,00. incl. VAT
Original price was: £ 660,00.Current price is: £ 546,00. incl. VAT
Original price was: £ 590,00.Current price is: £ 468,00. incl. VAT
Original price was: £ 725,00.Current price is: £ 625,00. incl. VAT
£ 69,00 incl. VAT
£ 24,00 incl. VAT
£ 15,00 incl. VAT
£ 30,00 incl. VAT

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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.

Introducing the Flat Roof Skylight 800 x 1800 mm, a distinguished product by Regal Glass Group, meticulously designed to infuse your flat-roofed spaces with abundant natural light and elevate the overall ambiance. This skylight combines state-of-the-art technology with sleek aesthetics, making it a perfect fit for those who value both design and functionality.

Crafted with precision, the skylight features advanced triple-glazed units, ensuring outstanding thermal efficiency with a U-value of 0.9 W/m²K. This exceptional insulation is facilitated by the innovative use of a 15-millimeter warm Edge spacer, filled with Argon gas, strategically placed between the glass panes to significantly minimize heat transfer, thereby maintaining a comfortable and consistent indoor climate throughout the year.

The Flat Roof Skylight 800 x 1800 mm stands out not only for its functionality but also for its elegant, frameless design that seamlessly integrates into any architectural style, enhancing the visual appeal of your property. The maximized daylight entry through the skylight illuminates interior spaces, creating a more welcoming and vibrant environment.

Ease of maintenance is a key feature of this skylight, thanks to its self-cleaning mechanism, activated by sunlight, which ensures that the glass remains clear and free from obstructions, providing uninterrupted views with minimal effort.

Versatile in its application, this skylight can be installed at pitches from 6° to 45°, accommodating a wide range of architectural designs. Beyond its aesthetic benefits, the skylight also offers enhanced sound insulation, UV protection, and is constructed with safety toughened glass, adding an extra layer of security to your installation.

Compliance with British Standards & Building Regulations is assured, as the Flat Roof Skylight 800 x 1800 mm includes all necessary Safety Markings and is CE marked, confirming its adherence to the highest EU directives and standards for product quality and safety.

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.


73 , 20 kg


205 × 10 × 105 cm


Regal Glass


Regal Glass Group Ltd

Internal Size

800 x 1800 mm

External Size

1000 x 2000 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 [%]



1 review

1 review for Flat Roof Skylight 800 x 1800 mm

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  1. Grace Cook

    I spent so much time looking for a frameless skylight in Glasgow. Then I found skylights.co.uk and ordered the 800 x 1800 flat roof skylight. Guess what? It has elevated the entire feel of my room. Very grateful to you guys!

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