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Custom Size Flat Glass
Rated 5/5 by customers

“Bespoke sizing meant no compromises or fillers.”
From
£629.54
ex. VAT
Based on the lowest‑priced size/spec. Price updates with selections

Not sure where to start?

The custom size flat glass rooflight range by Brett Martin is easily installed, and features laminated inner panes as standard.

Includes free UK mainland delivery and a 10-year warranty.

 

Custom Size Flat Glass

Rated 5/5 by customers

“Bespoke sizing meant no compromises or fillers.”
From
£629.54
ex. VAT
Based on the lowest‑priced size/spec. Price updates with selections
*
mm Length must be between 600mm and 3000mm
*
mm Width must be between 600mm and 2000mm
A minimum pitch of 2° is required to prevent water ponding on the glass leading to rapid dirt build up.
*
*
*
*
*
If purchasing multiple manually opening units or no pole is needed then this can be removed

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Current configuration
From £629.54 ex. VAT
£755.44 inc. VAT

Free mainland UK Delivery

Buy with Confidence

All product configurations are reviewed by us to ensure they’re suitable for your roof opening before production and are backed by a 10-year warranty.

Manufactured in the UK

10 year manufacturer warranty

Technical review before manufacture

Choose Flat Glass Rooflights for the optimum safe and secure daylighting option. With a laminated inner page as standard, Brett Martin Glass Skylights prioritises the safety of your family.

Fixed variants of our Flat Glass rooflights achieve Secured by Design accreditation, ensuring you are kept secure against burglary.

  • The Brett Matin Flat Glass rooflight provides quality flat glass rooflight features at highly competitive prices, with some variants delivered in as little as 48 hours* from order.
  • Designed with both the building owner and installer in mind and to cater for the large and growing trend for flat-roofed home extensions and light, bright open, plan living.
  • Brett Martin Flat Glass rooflight is also equally at home on larger commercial property developments, giving homeowners, independent tradespeople, and larger construction trades the ability to bring stylish daylighting to all types of buildings quickly.

 

 

 Laminated Inner Pane

*See delivery details for relevant products

Benefits

  • Quick, Hassle-Free Installation – Large, secure modules connect seamlessly with no need for complex flashing, making the installation faster and easier.
  • Maximised Natural Light – Uninterrupted daylight flows into large or linear spaces without bulky frames obstructing the view, creating a brighter, more open atmosphere.
  • Guaranteed Weather Protection – Factory-glazed modules deliver reliable weather tightness, eliminating the need for on-site glazing sealants and providing lasting durability.
  • Versatile for Various Roof Pitches – Suitable for pitches between 2° and 35°, offering a flexible solution for different roofing styles and designs.
  • Energy Efficient – Thermally broken frames combined with Low-E insulated double-glazed glass units help keep your home warm while reducing energy consumption.
  • Enhanced Safety – Laminated inner panes meet non-fragility standards (CWCT TN-67 and Class B non-fragile to ACR[M]001), keeping those above and below the rooflight safe.
  • High Security – Fixed rooflights come with Secured by Design accreditation, giving you peace of mind for your home’s security.
  • Long-Term Warranty – Enjoy the peace of mind that comes with a 10-year commercial product warranty, providing long-lasting quality and reliability.
  • Environmentally Friendly – BRE Globally Verified Environmental Product Declaration (EPD) ensures the rooflights meet sustainability standards for specific configurations.

Features

  • Elegant Aluminium Framework – The stylish aluminium frame is powder-coated in anthracite grey (RAL 7016) on the outside and white (RAL 9010) on the inside, adding a modern touch to your home.
  • Minimalist Design with Hidden Features – Flush-powered opening modules with hidden actuators and cables keep both fixed and opening modules looking identical, preserving the clean, minimalist look.

Additional Features

  • Secured by Design Accreditation – All fixed modules are Secured by Design accredited as standard.
  • Customisable Ventilation Options – Choose from manual or powered opening options, controlled via wall switches, remote controls, or rain sensors for tailored convenience.
  • Multipane Glazing – Customisable with multiple panes, reducing the need for heavier or more expensive glass specifications.
  • Special Glass Options – Solar control, tinted, obscure, and self-cleaning glass choices are available to suit your specific requirements.

Installing the Brett Martin Flat Glass Rooflight is a straightforward process designed for builders and installers alike. Whether fitted to a builder’s upstand or paired with a preformed kerb, the rooflight is engineered for secure, long-lasting performance with minimal on-site effort.

Key Measurement Details

  • Upstand Location: The measurement is for the exterior edge-to-edge size of the timber or PVC kerb.
  • Accuracy: Measure in multiple places to ensure the upstand is square.
  • Flat Glass: Brett Martin Mardome and flat glass units are designed to fit the outside dimension of the upstand.

 

For a full step-by-step installation guide for the Flat Glass Rooflight on a builder’s upstand, watch the video below or download our installation guide here.

*Brett Martin Daylight Systems operates a policy of continuous product improvement and reserves the right to alter specifications at any time without notice. Every effort has been taken to ensure all details contained in this video are correct at the time of release but this video should be used only as a guide and does not in any way form part of a contract or warranty. It is the customer’s responsibility to ensure that the product is suitable for the actual conditions of use, which are beyond the control of Brett Martin Daylight Systems.

How Your Custom Flat Glass Rooflight Is Delivered

  • Delivered kerbside by the Brett Martin transport fleet
  • Glass and frame arrive together on an A-frame
  • Driver can assist with unloading if required
  • Sacrificial foam runners protect the glass during unloading
  • The A-frame is removed by the driver after delivery

Important: Please ensure someone is available on the day of delivery to help unload the rooflight from the lorry.

Delivery Times

Custom or made-to-order flat glass rooflights are delivered in approximately 15 working days. Free UK mainland delivery.

Delivery Cost

Delivery is free to all UK mainland addresses.

For non-mainland and remote postcodes, please contact us for a delivery quote.

Excluded Postcodes

We currently do not deliver to the following areas without prior arrangement:

Scotland, Northern Ireland, Channel Islands & Remote Areas

HS, IM, IV, ZE, BT, KA27–28, KWA, PA20–49, PH17–50, PO30–40, TR21–25, LL58–78

Important Ordering Information

Custom flat glass rooflights are made to order. Once processing begins, changes cannot be made. Please double-check your order details before completing payment.

Contact Us

Email: info@daylightsystems.com
Phone: +44 (0)24 7660 2022

Write your own review
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Custom Size Flat Glass
I was worried it would look bulky - it doesn’t. Bought for a hallway project to improve the overall feel of the extension. Bespoke sizing meant no compromises or fillers.
Beth | 5/15/2026 9:59 AM
Was this review helpful? Yes No (1/0)
A manager responded to this review
Thanks for taking the time to leave a review. We’re really pleased to hear the custom size flat glass rooflight worked well for your hallway project and achieved the clean, non-bulky look you were hoping for.

It’s great to know the bespoke sizing helped avoid compromises or fillers and improved the overall feel of the extension. We really appreciate your feedback.
Custom Glass Rooflights
Better than expected, especially once you see it installed. Bought for a hallway project because the room felt gloomy. The result looks purpose‑made. Fitting was smoother than expected. It looks premium once it’s in place.
Kieran | 1/26/2026 1:01 PM
Was this review helpful? Yes No (1/0)
A manager responded to this review
Thank you for your review. We’re delighted to hear the finished result exceeded expectations and that the rooflight has made such a difference to your hallway project. It’s great to know the installation went smoothly and that the final look feels premium and purpose-made. We really appreciate you taking the time to share your feedback.
Product reviews
(2 reviews)
5/15/2026 9:59 AM
Custom Size Flat Glass
I was worried it would look bulky - it doesn’t. Bought for a hallway project to improve the overall feel of the extension. Bespoke sizing meant no compromises or fillers.
Beth
reply from Brett Martin
Thanks for taking the time to leave a review. We’re really pleased to hear the custom size flat glass rooflight worked well for your hallway project and achieved the clean, non-bulky look you were hoping for.

It’s great to know the bespoke sizing helped avoid compromises or fillers and improved the overall feel of the extension. We really appreciate your feedback.
Was this review helpful? Yes No (1/0)
1/26/2026 1:01 PM
Custom Glass Rooflights
Better than expected, especially once you see it installed. Bought for a hallway project because the room felt gloomy. The result looks purpose‑made. Fitting was smoother than expected. It looks premium once it’s in place.
Kieran
reply from Brett Martin
Thank you for your review. We’re delighted to hear the finished result exceeded expectations and that the rooflight has made such a difference to your hallway project. It’s great to know the installation went smoothly and that the final look feels premium and purpose-made. We really appreciate you taking the time to share your feedback.
Was this review helpful? Yes No (1/0)
Only registered users can write reviews

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