Pitched Roof Skylight 1200 x 2500 mm Original price was: £ 1.876,00.Current price is: £ 1.511,00. incl. VAT
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Pitched Roof Skylight 1500 x 2500 mm Original price was: £ 2.586,00.Current price is: £ 2.051,00. incl. VAT

Flat Roof Skylight 1500 x 2500 mm

Original price was: £ 2.585,00.Current price is: £ 2.050,00. 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 2500 mm
External Size: 1700 x 2700 mm
Glazing Type: Triple Glazed
Net Weight: 179.80kg
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.

This item: Flat Roof Skylight 1500 x 2500 mm
Original price was: £ 2.585,00.Current price is: £ 2.050,00. incl. VAT
Original price was: £ 2.585,00.Current price is: £ 2.050,00. incl. VAT
Original price was: £ 872,00.Current price is: £ 772,00. incl. VAT
£ 123,00 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.

Introducing the Flat Roof Skylight 1500 x 2500 mm by Regal Glass Group, a masterpiece of design that epitomizes our more than two decades of expertise in skylights and flat roof windows. This skylight window is a hallmark of modern architecture, featuring a sleek, frameless design that not only enhances the aesthetic appeal of your home but also maximizes the entrance of natural light, transforming your living spaces into areas of unparalleled brightness and openness.

Crafted with precision and care within our own in-house production facilities, each Flat Roof Skylight we create is a testament to our dedication to using only the finest quality materials, ensuring durability and superior performance. The expansive 1500 x 2500 mm model seamlessly merges with the flat roof’s surface, offering an unobstructed view of the sky and inviting an abundance of daylight into your home, thereby elevating the ambiance and mood of your interiors.

The modern, frameless design of our skylights is not just about aesthetics; it’s about creating a connection with the outdoors, bringing the beauty of the sky into your home in the most elegant and unobtrusive way possible. This design, coupled with the skylight’s triple-glazed units that achieve a U-value of 0.9 W/m²K, ensures optimal thermal efficiency, maintaining a comfortable indoor climate while reducing energy costs.

At Regal Glass Group, we offer an extensive range of standard sizes to accommodate various architectural needs, and for those seeking a bespoke solution, our custom skylights are designed to meet your unique specifications. The Flat Roof Skylight 1500 x 2500 mm, with its focus on modern, sleek frameless design, is the perfect choice for those looking to infuse their homes with the elegance and functionality of natural light.


108 kg


205 × 10 × 145 cm


Regal Glass


Regal Glass Group Ltd

Internal Size

1500 x 2500 mm

External Size

1700 x 2700 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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