Description
1000mm Ridge x 500mm Slope
Ridge Rooflight Specifications
Lid Only Rooflight
Lid only units are designed to be fixed onto a builder’s upstand on flat or pitched roofs.
Efficient
Each unit is manufactured from powder-coated aluminium with an integrated thermal break for enhanced insulation and reduced heat loss.
Double Glazed Rooflights Specification
Our double glazed ridge rooflights combine toughened safety glass with a low-E coating for excellent thermal performance. The typical build includes:
- Outer Pane: 6 mm clear heat-soak tested toughened glass, reducing the risk of spontaneous breakage by 95% compared to standard glass.
- Cavity: 18 mm argon-filled cavity for enhanced insulation.
- Inner Pane:
- Option 1: 9.5 mm soft coat low-E heat-soak tested toughened glass.
- Option 2: 13.5 mm soft coat laminated glass for added overhead protection.
Note: While toughened glass is classified as safety glass, it may fragment in the rare event of breakage. For enhanced safety, opt for the laminated double glazed upgrade, which prevents glass fragments from falling through, ideal for overhead installations.
Pre-Determined Glass Load and Rooflight Load Design
Our rooflights are rigorously tested to withstand typical UK environmental conditions, ensuring reliability and performance. Key load ratings include:
- Standard Rooflights:
- Wind Load: 1.0 kN/m², designed to resist strong winds across the UK.
- Snow Load: 0.9 kN/m², capable of supporting moderate to heavy snow accumulation.
Guide to Ridge Rooflight
Choosing the right size for your flat rooflight or skylight window is crucial for maximising natural light, ensuring energy efficiency, and meeting structural requirements.
Our premium flat roof lights, designed for both flat and pitched roofs with an upstand, offer versatile sizing options to suit diverse residential and commercial projects.
How to measure your roof light
Flat rooflights and skylights are available in a range of standard sizes to fit most projects, with dimensions typically measured by the External Upstand.
Rooflight Drawing (Lid Only)
For more information or technical drawing, Please contact sales@overheadglazing.co.uk
Need a custom size, oversized large rooflights or bespoke shapes ?

Ridge Rooflight Safety Features
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Enhanced Safety: Laminated inner leaf ensures overhead protection by reducing the risk of glass shattering, keeping occupants safe.
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Durability: Strong, multi-layered glass withstands impact, offering long-lasting reliability in various conditions.
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Security Boost: Laminated glass adds an extra layer of protection against breakins, enhancing building security.
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Customizable Option: Prefer a different glazing type? Contact us to discuss alternatives tailored to your needs.
Request a Custom Quote to find the perfect glazing solution.
Get In Touch
Frequently asked questions
How long does it take for my rooflight to be delivered?
All our rooflights are bespoke and made to order. Standard sizes can take up to 3 weeks to manufacture.
Where is delivery available?
Delivery is available nation wide
What is the warranty?
We offer 10 years seal warranty on all our rooflights.
Do you offer installation?
We offer installation services across the UK. Please get in touch to find out more about our fees.
Why Overhead Glazing Rooflights?
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Premium Components: Crafted with argon-filled glass, warm-edge spacers, and Dow silicone-sealed units for superior energy efficiency.
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Enhanced Overhead Protection: Features high-performance laminated panes, surpassing standard 8.8mm annealed laminated glass for exceptional safety.
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Heat-Soaked Toughened Glass: Reduces spontaneous glass breakage due to NiS by 95% for lasting reliability.
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Built for UK Weather: Designed to withstand wind loads of 1.0 kN/m² and snow loads of 0.9 kN/m², with custom load designs available for unique regional needs.
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Long-Lasting Assurance: Backed by a 10-year seal warranty for complete peace of mind.
- Bespoke Option: Large rooflights available up to 7sqm in one piece!
Bespoke Ridge Rooflight - Made to order
Our Range of Rooflight

Fixed Standard Rooflights
For those who seek quality rooflights at great prices. Lid only Fixed Rooflight available in double glazed and laminated glass.

Walk-on Rooflights
These work as a stunning feature providing access to rooftop areas, blurring the boundaries between interior and exterior spaces.
Modular Rooflights
Custom specified and flexible solution overcomes the practical challenges of transporting and installing large, single-piece rooflights.

Eaves Rooflights
The ideal solution for assembling a rooflight around internal or external angles in adjacent walls or chimney stacks.

Circular Rooflights
These are specially designed Rooflights that are made circular. It provides facility in design and aesthetics. The sweeping curves are used to create a modern look.

Ridge Rooflights
The Ridge Rooflight is a custom rooflight, glazed on both returns and precision built to straddle the ridge of your roof, matching its angle of pitch precisely.