Flat Roof Skylight 1200 x 1800 mm Original price was: £ 988,00.Current price is: £ 798,00. incl. VAT
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Pitched Roof Skylight 300 x 300 mm Original price was: £ 185,00.Current price is: £ 120,00. incl. VAT

Custom Size Roof Window – Oversized

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£ 100,00 incl. VAT

  •  This is the internal glass size. (Quoted Size)

    Use the image above for a reference.

    Estimated Delivery is between 3 to 6 weeks

    *Width (300mm - 2700mm)
    *Length (1500mm - 5800mm)

Payment Methods:

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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.

Customer Reviews

9 reviews

9 reviews for Custom Size Roof Window – Oversized

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  1. William Jenkins

    Our vintage home in Stoke-on-Trent has been beautifully modernized with a custom-sized skylight from Regal Glass. Their bespoke service was exactly what we needed for the perfect fit. – William Jenkins

  2. Ava Martin

    Regal Glass transformed our Bradford home with their made-to-measure skylight. The bespoke design fits our unique roofline perfectly and floods our space with light.

  3. Sophia Wilson

    In our Norwich home, we needed a skylight that wasn’t off-the-shelf. Regal Glass’ custom service provided us with a bespoke skylight that fits like a glove and looks stunning.

  4. Connor Prince

    The custom rooflight we had made for our home’s extension is perfect. The team at Regal Glass Group was so helpful in creating a bespoke solution that fits our unique space. Highly recommend their expertise!

  5. Jessica Robson

    I needed a bespoke skylight for my studio’s awkwardly shaped roof, and Regal Glass Group delivered beyond expectations. The natural light has completely transformed my workspace.

  6. Florence Freeman

    The bespoke skylights were the perfect solution for our Edinburgh home’s unique roofline. The quality is top-notch, and the added natural light has brightened up our home beautifully.

  7. Kian Edwards

    Our made-to-measure roof window has been a standout feature in our property’s recent refurbishment.

  8. Adam Rogers

    Purchased an oversized roof window for our dining area. The Argon gas-filled spacers and triple glazing provide excellent insulation. The self-cleaning feature is fantastic. Free delivery to Glasgow was on time. Highly recommended!

  9. James Parker

    Bought an oversized roof window for our attic. The thermal efficiency and sound reduction are fantastic. The self-cleaning feature keeps it looking great. Delivery was free to Oxford and quick. Very happy with the product and service.

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