Flat Roof Skylight 1500 x 3000 mm Original price was: £ 3.037,00.Current price is: £ 2.408,00. incl. VAT
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Flat Roof Skylight 1200 x 1800 mm Original price was: £ 988,00.Current price is: £ 798,00. incl. VAT

Flat Roof Skylight 600 x 2500 mm

Original price was: £ 867,00.Current price is: £ 663,00. 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 2500 mm
External Size: 800 x 2700 mm
Glazing Type: Triple Glazed
Net Weight: 77.40kg
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 2500 mm
Original price was: £ 867,00.Current price is: £ 663,00. incl. VAT
Original price was: £ 867,00.Current price is: £ 663,00. incl. VAT
Original price was: £ 755,00.Current price is: £ 655,00. incl. VAT
£ 69,00 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 600 x 2500 mm from Regal Glass Group, where over two decades of expertise in skylight innovation meets cutting-edge technology. This skylight not only floods your space with natural light but also brings a modern elegance to your flat roof, all while offering the convenience of self-cleaning glass.

Our commitment to quality is evident in each Flat Roof Skylight we produce, meticulously crafted in our own facilities to ensure superior performance and design. The 600 x 2500 mm model stands out with its frameless, minimalist aesthetic, perfectly integrating into your roofline and maximizing the entry of daylight, thereby enhancing the ambiance and feel of your interiors.

A key feature of our skylights is the self-cleaning glass, designed to significantly reduce the need for manual cleaning. This innovative technology is activated by sunlight, breaking down organic dirt and dispersing it with the rain, ensuring your skylight remains clear and streak-free with minimal effort on your part. Coupled with the durability of safety toughened glass, this makes our skylights a low-maintenance, high-reward addition to any home.

Engineered for exceptional thermal efficiency, our skylights feature triple-glazed units with a 15-millimeter warm Edge spacer filled with Argon gas, delivering an impressive U-value of 0.9 W/m²K. This design helps maintain a comfortable indoor climate all year round, reducing energy costs and enhancing your living environment.

Our range includes a variety of standard sizes to accommodate diverse architectural needs, and for those seeking a tailored solution, our custom skylights provide the flexibility to meet your specific design requirements, ensuring the perfect fit for your home.


82 , 40 kg


275 × 10 × 85 cm


Regal Glass


Regal Glass Group Ltd

Internal Size

600 x 2500 mm

External Size

800 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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