Flat Roof Skylight 600 x 600 mm Original price was: £ 390,00.Current price is: £ 299,00. incl. VAT
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Flat Roof Skylight 600 x 1200 mm Original price was: £ 580,00.Current price is: £ 446,00. incl. VAT

Flat Roof Skylight 600 x 900 mm

Original price was: £ 490,00.Current price is: £ 390,00. incl. VAT

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Regal Glass Group: A trusted manufacturer of premium roof windows

Type: Fixed Frameless Flat Roof Skylight
Internal Size: 600 x 900 mm
External Size: 800 x 1100 mm
Glazing Type: Triple Glazed
Net Weight: 29.40kg
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 600 x 900 mm
Original price was: £ 490,00.Current price is: £ 390,00. incl. VAT
Original price was: £ 490,00.Current price is: £ 390,00. incl. VAT
Original price was: £ 377,00.Current price is: £ 284,40. incl. VAT
Original price was: £ 650,00.Current price is: £ 550,00. incl. VAT
£ 54,00 incl. VAT
£ 24,00 incl. VAT
£ 15,00 incl. VAT
£ 30,00 incl. VAT

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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.

Explore the Flat Roof Skylight 600 x 900 mm by Regal Glass Group, designed to illuminate your space with natural light while offering an enhanced level of privacy. This elegantly proportioned skylight window melds cutting-edge technology with refined aesthetics, making it a prime choice for flat-roofed areas where privacy and light are paramount.

Equipped with advanced triple-glazed units, this skylight showcases superior thermal efficiency, as demonstrated by its U-value of 0.9 W/m²K. At its heart lies a 15-millimeter warm Edge spacer, filled with Argon gas, positioned between the glass panes to effectively minimize heat transfer, ensuring your indoor environment remains consistently pleasant throughout the seasons.

Privacy is a key feature of this skylight, designed to let in an abundance of soft, natural light without compromising the seclusion of your space. Whether it’s installed in a private office, bathroom, or an area overlooking neighbors, you can enjoy the benefits of daylight with peace of mind, knowing your private moments remain shielded from external view.

The skylight’s frameless design not only complements modern architectural styles with its sleek, minimalist appearance but also maximizes the flow of natural light into the interior, creating a brighter, more inviting atmosphere. The self-cleaning technology, activated by sunlight, ensures that maintenance is effortless, keeping the glass pristine and your views unobstructed.

This skylight is versatile enough to be installed at pitches from 6° to 45°, accommodating a broad range of architectural requirements. In addition to its aesthetic and functional advantages, it also offers sound insulation, UV protection, and is constructed with safety toughened glass, enhancing both the security and durability of the installation.

Meeting all British Standards & Building Regulations, the Flat Roof Skylight 600 x 900 mm comes with the requisite Safety Markings and is CE marked, signifying its compliance with the essential EU directives and standards for product quality and safety within the European Economic Area.

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.


29 , 40 kg


115 × 10 × 85 cm


Regal Glass


Regal Glass Group Ltd

Internal Size

600 x 900 mm

External Size

800 x 1100 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 [%]



3 reviews

3 reviews for Flat Roof Skylight 600 x 900 mm

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  1. Noah Williams

    Just had a 600 x 900 mm skylight installed in my small kitchen, and it’s like a whole new room! The quality of skylights.co.uk is unmatched, and the natural light has completely revitalized my cooking area.

  2. Grace Spencer

    Installed a small skylight in a client’s office. They love it, very nice product.

  3. Ethan Bell

    We like our new roof light in the bedroom. Simple installation and looks good.

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