Flat Roof Skylight 1200 x 2500 mm Original price was: £ 1.699,00.Current price is: £ 1.571,00. incl. VAT
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Flat Roof Skylight 1500 x 2500 mm Original price was: £ 2.272,00.Current price is: £ 2.132,00. incl. VAT

Pitched Roof Skylight 1200 x 2500 mm

Original price was: £ 1.699,00.Current price is: £ 1.571,00. incl. VAT

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Regal Glass Group: A trusted manufacturer of premium roof windows

Type: Fixed Frameless Pitched Roof Skylight
Internal Size: 1200 x 2500 mm
External Size: 1400 x 2700 mm
Glazing Type: Triple Glazed
Net Weight: 161.70kg
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.

Original price was: £ 1.088,00.Current price is: £ 988,00. incl. VAT
£ 314,00 incl. VAT
£ 314,00 incl. VAT
£ 24,00 incl. VAT
£ 15,00 incl. VAT
£ 115,00 incl. VAT
£ 115,00 incl. VAT
£ 30,00 incl. VAT

Payment Methods:

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Shop safely with our secure online checkout.

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.

Discover the transformative elegance of the Pitched Roof Skylight 1200 x 2500 mm, presented by Regal Glass Group. This skylight, a result of our mastery in skylights and pitched roof windows, is enhanced by the superior insulation of triple glazing, ensuring your home is bathed in natural light without compromising on energy efficiency. With over two decades of expertise in the industry, we have refined our skylights to offer unparalleled performance and aesthetic appeal.

Crafted within our own facilities, each of our skylight windows reflects a commitment to excellence, with the 1200 x 2500 mm model showcasing a sleek, frameless design that perfectly complements any pitched roof. The inclusion of triple-glazed units is a testament to our dedication to providing products that not only enhance the beauty of your home but also contribute to its thermal efficiency. With a U-value of 0.9 W/m²K, this skylight is designed to maintain a comfortable interior climate while reducing energy costs, making it an ideal choice for those looking to combine style with sustainability.

Whether you are exploring our range of standard sizes or considering a custom skylight solution, the Regal Glass Group offers options tailored to meet your specific needs. Our skylights, enriched by the benefits of triple glazing, are the perfect addition to any home, promising to elevate your living spaces with the elegance and efficiency of natural light.


108 kg


55 × 10 × 55 cm


Regal Glass



Internal Size

1200 x 2500 mm

External Size

1400 x 2700 mm

Glazing Type

Triple glazed

Glass Tint

Clear Tint



Roof Type

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 [%]


Customer Reviews

1 review

1 review for Pitched Roof Skylight 1200 x 2500 mm

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  1. Angus McCarthy

    Installed a pitched skylight, and it’s been the best decision for our living room. The natural light enhancement is unparalleled.

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