Flat Roof Skylight 1000 x 2000 mm Original price was: £ 980,00.Current price is: £ 731,00. incl. VAT
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Flat Roof Skylight 1000 x 3000 mm Original price was: £ 1.759,00.Current price is: £ 1.328,00. incl. VAT

Flat Roof Skylight 1000 x 2500 mm

Original price was: £ 1.209,00.Current price is: £ 948,00. incl. VAT

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Regal Glass Group: A trusted manufacturer of premium roof windows

Type: Fixed Frameless Flat Roof Skylight
Internal Size: 1000 x 2500 mm
External Size: 1200 x 2700 mm
Glazing Type: Triple Glazed
Net Weight: 123.60kg
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 1000 x 2500 mm
Original price was: £ 1.209,00.Current price is: £ 948,00. incl. VAT
Original price was: £ 1.209,00.Current price is: £ 948,00. incl. VAT
Original price was: £ 774,00.Current price is: £ 674,00. 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.

Elevate your home with the Flat Roof Skylight 1000 x 2500 mm, a masterpiece of design and functionality from Regal Glass Group. With a legacy built on over 20 years of excellence in skylights and flat roof windows, this skylight window is not just a product but a testament to our commitment to innovation and quality. Designed to blend seamlessly with your flat roof, this skylight offers the remarkable advantage of a self-cleaning feature, ensuring your view of the sky remains unobstructed without the hassle of regular maintenance.

Crafted with meticulous attention to detail in our state-of-the-art facilities, each Flat Roof Skylight we produce is a reflection of our dedication to premium quality materials. The 1000 x 2500 mm model features a sleek, frameless design that not only enhances the aesthetic appeal of your home but also maximizes natural light ingress, transforming your interiors into bright, vibrant spaces.

At the heart of this skylight’s functionality is the innovative self-cleaning glass, activated by sunlight to break down and wash away dirt and grime, significantly reducing maintenance efforts. This, coupled with the skylight’s construction from safety toughened glass and its exceptional thermal efficiency with a U-value of 0.9 W/m²K, makes it an ideal addition to any home, prioritizing both form and function.

Regal Glass Group is committed to sustainability, demonstrated through our eco-friendly packaging, ensuring that our products are delivered with minimal environmental impact. Alongside our extensive range of standard sizes, we also offer custom skylights, allowing for personalized solutions tailored to your specific needs. The Flat Roof Skylight 1000 x 2500 mm, with its focus on self-cleaning technology, premium materials, and eco-conscious practices, redefines the standard for modern skylight solutions, offering unparalleled convenience and style for your home.


123 , 60 kg


275 × 10 × 125 cm


Regal Glass


Regal Glass Group Ltd

Internal Size

1000 x 2500 mm

External Size

1200 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 [%]



2 reviews

2 reviews for Flat Roof Skylight 1000 x 2500 mm

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  1. Ava Taylor

    We decided to go with a large 1000 x 2500 mm roof light for our loft conversion, and we couldn’t be happier. The space looks much more bright and elegant now. We live in London and got it on the next day, which was also great!

  2. Grace Johnson

    We’re thrilled with our 1000 x 2500 mm skylight. It’s not just a window to the sky; it’s a feature that enhances our entire home’s design.

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