Flat Roof Skylight 1200 x 1200 mm Original price was: £ 676,00.Current price is: £ 525,00. incl. VAT
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Flat Roof Skylight 1500 x 2000 mm Original price was: £ 2.079,00.Current price is: £ 1.673,00. incl. VAT

Flat Roof Skylight 1500 x 1500 mm

Original price was: £ 1.569,00.Current price is: £ 1.067,00. incl. VAT

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Regal Glass Group: A trusted manufacturer of premium roof windows

Type: Fixed Frameless Flat Roof Skylight
Internal Size: 1500 x 1500 mm
External Size: 1700 x 1700 mm
Glazing Type: Triple Glazed
Net Weight: 110.85kg
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 1500 x 1500 mm
Original price was: £ 1.569,00.Current price is: £ 1.067,00. incl. VAT
Original price was: £ 1.569,00.Current price is: £ 1.067,00. incl. VAT
Original price was: £ 781,00.Current price is: £ 681,00. incl. VAT
£ 84,00 incl. VAT
£ 24,00 incl. VAT
£ 15,00 incl. VAT
£ 30,00 incl. VAT

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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.

Illuminate your home with the Flat Roof Skylight 1500 x 1500 mm from Regal Glass Group, where our legacy of over two decades in skylights and flat roof windows merges with state-of-the-art technology to enhance your living spaces. This skylight window is designed not only to flood your interiors with abundant natural light but also to provide essential UV protection, safeguarding your space and its occupants from the sun’s harmful rays.

Crafted with the utmost precision in our specialized in-house facilities, each Flat Roof Skylight reflects our commitment to using only premium quality materials, ensuring durability and performance. The 1500 x 1500 mm model boasts a modern, frameless design that integrates seamlessly with your flat roof, enhancing the architectural aesthetic while maximizing the entry of daylight, thereby transforming your home into a bright and vibrant environment.

The UV protection feature of our skylights is a testament to our dedication to your well-being and the preservation of your interior furnishings. Coupled with the triple-glazed units that achieve a U-value of 0.9 W/m²K, our skylights offer superior thermal efficiency, contributing to a comfortable indoor climate and reduced energy consumption.

At Regal Glass Group, we understand the importance of choice and customization. Our range includes a variety of standard sizes to suit diverse needs, and for those looking for a tailored solution, our custom skylights are designed to meet your specific requirements. The Flat Roof Skylight 1500 x 1500 mm, with its emphasis on UV protection and the maximization of natural light, is an exceptional choice for enhancing the comfort and aesthetic appeal of your home.


110 , 85 kg


175 × 10 × 175 cm


Regal Glass


Regal Glass Group Ltd

Internal Size

1500 x 1500 mm

External Size

1700 x 1700 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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