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Custom Size Glass Roof Lantern

1 review

Create the perfect roof lantern for your space with custom sizes, styles, and glazing options – made to order by Brett Martin and engineered to deliver light, comfort, and long-lasting quality. Roof lanterns are supplied with a toughened inner pane as standard, with the option to upgrade to laminated inner panes for enhanced overhead safety.

10-year warranty plus free UK mainland delivery

 
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mm Length must be between 1500mm and 3000mm
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mm Width must be between 1000mm and 2000mm
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£1274.00 ex. VAT
£1528.80 inc. VAT

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Product overview

Custom Size Glass Roof Lantern

Custom-size Brett Martin Roof Lanterns give you the freedom to create a roof lantern that fits your space precisely. Choose the required dimensions, select a 4- or 6-pane layout, and configure the available frame colour and glazing tint to suit the project.

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Product formatCustom-size Brett Martin Roof Lanterns give you the freedom to create a roof lantern that fits your space precisely.
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Project suitabilityBrett Martin Roof Lanterns are designed with performance and safety in mind, with a toughened inner pane as standard and the option to upgrade to laminated inner panes for additional overhead safety.
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Available specificationSelect the size, glazing, frame, kerb or opening options offered in the configurator for this product.
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Check before orderingConfirm dimensions against the prepared opening, kerb or builder’s upstand and review the relevant delivery and installation guidance.

Product details

Custom-size Brett Martin Roof Lanterns give you the freedom to create a roof lantern that fits your space precisely. Choose the required dimensions, select a 4- or 6-pane layout, and configure the available frame colour and glazing tint to suit the project.

Brett Martin Roof Lanterns are designed with performance and safety in mind, with a toughened inner pane as standard and the option to upgrade to laminated inner panes for additional overhead safety. Thermally efficient double-glazed units and a straightforward installation system provide a durable, low-maintenance solution.

Use the online configurator to build the specification, then check the final dimensions and options before ordering.

Benefits & features

What this product offers

Brett Martin glass roof lanterns combine generous glazing, thermally broken aluminium framing and configurable safety-glass options to bring natural light into flat-roof extensions and living spaces.

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Natural daylightLarge glazed areas brighten the room below while maintaining a clean, architectural roofline.
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Thermally broken aluminiumStrong, durable framing is designed to reduce heat transfer while keeping the profile neat and refined.
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Choice of layoutChoose the relevant 4-pane, 6-pane or custom-size product to suit the proportions and character of the project.
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Choice of glassSelect from the safety-glass and tint options available in the product configurator for the chosen design.

More product details

UK manufacturedManufactured by Brett Martin Daylight Systems and supplied with a 10-year manufacturer warranty.
Good to knowAvailable sizes, pane layouts and glazing options depend on the selected product and final configuration. Dimensions refer to the external builder’s upstand.
Good to knowAvailable sizes and options depend on the final product configuration.
Installation guidance

Plan the installation

Roof lanterns should be installed onto a correctly prepared, weathered and insulated builder’s upstand. Use a competent contractor and follow the relevant installation guide.

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MeasureConfirm the external dimensions of the prepared opening, kerb or builder’s upstand.
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PrepareEnsure the supporting structure is square, level, insulated and fully weathered before installation.
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Plan accessArrange safe access, unloading, lifting and handling for the delivered frame and glazing.
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Follow the guideUse the official installation instructions for the selected product and configuration.

Product-specific installation details

Check accessPlan safe access, lifting and unloading for the delivered glass and frame.
Use the guideDownload and follow the official installation guide for the selected configuration.
Key measurement detailsProduct sizes refer to the external builder’s upstand. Do not alter the supplied glass or frame. Treat glazing as fragile during fitting.
Planning notePlanning permission and building-regulation requirements depend on the project. Check with your local authority where necessary.
Before work beginsCheck the selected product, site conditions and official installation guide before work begins.
Lead times & delivery

Custom-size Roof Lantern ordering guide

Custom dimensions and special glazing are made to order.

Approximately 15 working daysTypical guide for custom dimensions or special glazing.
Made to orderFinal timing follows approval of the complete specification.
Confirm firstLarge orders, unusual specifications and restricted postcodes.

Order type

Configuration Guide
Custom dimensions or special glazing Approximately 15 working days
Large quantities or unusual requirements Confirmation required before ordering

Delivery and handling

Delivered kerbside with the glass and frame protected on an A-frame. Free UK mainland kerbside delivery. Remote or restricted delivery areas require prior arrangement. Ensure suitable access and enough people or lifting equipment for unloading.
Please note

The lead time is a guide and depends on the final configuration and availability.

Product FAQs

Frequently asked questions

Clear answers to common questions about specification, glazing and installation.

What glass options are available?

Choose the available toughened-over-toughened or toughened-over-laminated configuration in the product selector.

What is the difference between laminated and toughened glass?

Laminated glass uses bonded layers and an interlayer that helps hold the glass together if damaged. Toughened glass is heat treated for strength and breaks into small pieces if damaged.

What is toughened-over-laminated glass?

It combines a toughened outer pane with a laminated inner pane for additional overhead safety where available.

When should I consider blue solar-control glass?

Blue solar-control glass can help reduce glare and solar heat gain on sun-exposed roofs. Contact the team if you need help selecting the specification.

Write your own review
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Bad
Excellent
Easy to fit.
First time fitting one of these, it was much easier than other brands i have used. Will use on future projects.
Rebecca | 4/7/2026 9:34 AM
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A manager responded to this review
Thank you for your review. We’re delighted to hear the rooflight was easy to fit and compared well against other brands you’ve used. We really appreciate your feedback and look forward to supporting you on future projects.

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