Flat Roof Skylight 1000 x 3000 mm Original price was: £ 1.759,00.Current price is: £ 1.328,00. incl. VAT
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Flat Roof Skylight 1500 x 1500 mm Original price was: £ 1.569,00.Current price is: £ 1.067,00. incl. VAT

Flat Roof Skylight 1200 x 1200 mm

Original price was: £ 676,00.Current price is: £ 525,00. incl. VAT

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Regal Glass Group: A trusted manufacturer of premium roof windows

Type: Fixed Frameless Flat Roof Skylight
Internal Size: 1200 x 1200 mm
External Size: 1400 x 1400 mm
Glazing Type: Triple Glazed
Net Weight: 72.60kg
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 1200 x 1200 mm
Original price was: £ 676,00.Current price is: £ 525,00. incl. VAT
Original price was: £ 676,00.Current price is: £ 525,00. incl. VAT
Original price was: £ 615,00.Current price is: £ 463,20. incl. VAT
Original price was: £ 715,00.Current price is: £ 615,00. 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 1200 x 1200 mm from Regal Glass Group, where our heritage of over 20 years in skylight innovation meets the demands of modern living. This skylight window, designed for flat roofs, is not just an architectural feature but a functional masterpiece, offering the convenience of a self-cleaning glass feature, ensuring that maintenance is effortless and your view of the sky remains pristine.

Crafted in our state-of-the-art in-house facilities, each Flat Roof Skylight is a testament to our commitment to using premium quality materials. The 1200 x 1200 mm model, with its sleek, frameless design, integrates seamlessly with your flat roof, maximizing natural light influx and enhancing the ambiance of your interiors. The inclusion of triple-glazed units with a U-value of 0.9 W/m²K ensures optimal thermal efficiency, contributing to a comfortable indoor environment and energy savings.

The self-cleaning glass technology, a hallmark of our skylights, is activated by sunlight to decompose and wash away organic dirt, significantly reducing the need for manual cleaning. This feature, combined with the robustness of safety toughened glass, underscores our dedication to both functionality and durability.

Regal Glass Group offers a wide array of standard sizes to suit diverse architectural needs. Additionally, our custom skylight solutions provide the flexibility to meet specific design requirements, ensuring a perfect fit for your home. The Flat Roof Skylight 1200 x 1200 mm, with its focus on self-cleaning technology and superior design, is an ideal choice for enhancing your home with natural light, effortlessly blending convenience with modern elegance.


72 , 60 kg


145 × 10 × 145 cm


Regal Glass


Regal Glass Group Ltd

Internal Size

1200 x 1200 mm

External Size

1400 x 1400 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 1200 x 1200 mm

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  1. Ethan Carter

    Our living room’s new 1200 x 1200 mm skylight has become the centerpiece of our home. It’s amazing how much natural light it brings in.

  2. Finn Perez

    I was looking for a 1200 x 1200 skylight for our entryway in Glasgow. When I ordered it from your website I didn’t expect it to transform our staircase into a radiant welcome for all our guests. Brilliant work by Regal Glass!

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