Flat Roof Skylight 600 x 900 mm Original price was: £ 490,00.Current price is: £ 390,00. incl. VAT
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Flat Roof Skylight 600 x 1500 mm Original price was: £ 550,00.Current price is: £ 428,00. incl. VAT

Flat Roof Skylight 600 x 1200 mm

Original price was: £ 580,00.Current price is: £ 446,00. 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 1200 mm
External Size: 800 x 1400 mm
Glazing Type: Triple Glazed
Net Weight: 38.40kg
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 1200 mm
Original price was: £ 580,00.Current price is: £ 446,00. incl. VAT
Original price was: £ 580,00.Current price is: £ 446,00. incl. VAT
Original price was: £ 445,00.Current price is: £ 318,00. incl. VAT
Original price was: £ 684,00.Current price is: £ 584,00. incl. VAT
£ 54,00 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 600 x 1200 mm from Regal Glass Group, a fusion of impeccable design and wellness-enhancing features. This skylight is engineered to not only brighten your flat-roofed spaces with abundant natural daylight but also to promote health and well-being through its thoughtful design and specifications.

This skylight is equipped with state-of-the-art triple-glazed units, boasting an impressive thermal efficiency with a U-value of 0.9 W/m²K. Central to its performance is a 15-millimeter warm Edge spacer, filled with Argon gas, placed between the panes of glass to drastically reduce heat transfer, thereby maintaining a comfortable and consistent indoor environment throughout the year.

A key highlight of the Flat Roof Skylight 600 x 1200 mm is its contribution to health and well-being. Natural light is known to have several health benefits, including improving mood, enhancing sleep quality, and boosting vitamin D levels. By maximizing daylight entry, this skylight helps create a living or working environment that supports physical and mental health, making spaces feel more open, airy, and connected to the natural outdoor environment.

The frameless design of the skylight not only adds a sleek, contemporary aesthetic to any property but also ensures an unobstructed flow of natural light, enhancing the overall ambiance of your interior spaces. Additionally, the skylight comes with a self-cleaning feature, activated by sunlight, which greatly simplifies maintenance by keeping the glass clear and ensuring uninterrupted access to healthful natural light.

Designed for versatility, the Flat Roof Skylight 600 x 1200 mm can be installed at pitches ranging from 6° to 45°, making it suitable for a wide variety of architectural styles and requirements. Besides its aesthetic appeal, the skylight also offers sound insulation, UV protection, and is built with safety toughened glass, adding an extra layer of security to your installation.

Fully compliant with British Standards & Building Regulations, this skylight includes all necessary Safety Markings and is CE marked, ensuring it meets the stringent EU quality and safety standards.

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.


38 , 40 kg


145 × 10 × 85 cm


Regal Glass


Regal Glass Group Ltd

Internal Size

600 x 1200 mm

External Size

800 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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