Flat Roof Skylight 800 x 1200 mm Original price was: £ 710,00.Current price is: £ 485,00. incl. VAT
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Flat Roof Skylight 800 x 1800 mm Original price was: £ 660,00.Current price is: £ 546,00. incl. VAT

Flat Roof Skylight 800 x 1500 mm

Original price was: £ 615,00.Current price is: £ 507,00. incl. VAT

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Regal Glass Group: A trusted manufacturer of premium roof windows

Type: Fixed Frameless Flat Roof Skylight
Internal Size: 800 x 1500 mm
External Size: 1000 x 1700 mm
Glazing Type: Triple Glazed
Net Weight: 61.50kg
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 800 x 1500 mm
Original price was: £ 615,00.Current price is: £ 507,00. incl. VAT
Original price was: £ 615,00.Current price is: £ 507,00. incl. VAT
Original price was: £ 550,00.Current price is: £ 417,60. incl. VAT
Original price was: £ 725,00.Current price is: £ 625,00. incl. VAT
£ 69,00 incl. VAT
£ 24,00 incl. VAT
£ 15,00 incl. VAT
£ 30,00 incl. VAT

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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 space with the Flat Roof Skylight 800 x 1500 mm, a premium offering from Regal Glass Group, expertly crafted to merge sophisticated design with functional excellence. This skylight is an ideal addition to any flat-roofed area, promising to transform your environment with a cascade of natural light and a host of other benefits.

Constructed with advanced triple-glazed units, this skylight window stands out for its exceptional thermal performance, boasting a U-value of 0.9 W/m²K. This superior insulation is achieved through a meticulously designed 15-millimeter warm Edge spacer, filled with Argon gas, which significantly reduces heat transfer, ensuring your space remains comfortable across all seasons.

Regal Glass Group is renowned for its commitment to quality and innovation, and the Flat Roof Skylight 800 x 1500 mm is no exception. Each unit is produced with precision, ensuring durability and performance. The sleek, frameless design not only enhances the aesthetic appeal of your property but also maximizes the entry of daylight, creating a brighter, more inviting atmosphere.

Maintenance is simplified with the skylight’s self-cleaning feature, activated by sunlight, which keeps the glass clear and your views spectacular with minimal effort. This skylight is adaptable for installation at angles from 6° to 45°, making it versatile for various architectural requirements.

In addition to its visual appeal, this skylight provides sound insulation and UV protection, ensuring your space is comfortable and protected. It is constructed with safety toughened glass, enhancing the security of your installation.

Fully compliant with British Standards & Building Regulations, the Flat Roof Skylight 800 x 1500 mm comes with all necessary Safety Markings and is CE marked, indicating its adherence to EU directives and standards for quality and safety.

At Regal Glass Group, we understand the importance of choice and customization. That’s why, in addition to our range of standard size skylights that are readily available in stock, we proudly offer custom skylight solutions tailored to your unique requirements. Whether you’re enhancing a residential space or illuminating a commercial venue, our skylights are designed to bring light, elegance, and efficiency to any setting.


61 , 50 kg


175 × 10 × 105 cm


Regal Glass


Regal Glass Group Ltd

Internal Size

800 x 1500 mm

External Size

1000 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 [%]



3 reviews

3 reviews for Flat Roof Skylight 800 x 1500 mm

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  1. James Walker

    Just had a large skylight installed in our kitchen by Regal Glass Group. The difference in natural light is incredible, and it’s become a stunning

  2. Isabella Khan

    We decided on a bespoke skylight for our bedroom, and we couldn’t be happier with the result. The Regal Glass Group team in Sheffield was professional and efficient, making the whole process a breeze.

  3. Isabella Powell

    I ordered an 800 x 1500 skylight for my bedroom. The quality of sleep and the amount of natural light it brings in are incredible. Regal Glass is the go-to for bedroom skylights.

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