Brett Martin Flat Rooflight Installation Guide: A Step-by-Step Walkthrough

The Brett Martin Flat Rooflight is a popular choice for homeowners and professionals seeking a sleek, modern solution for bringing natural daylight into flat roof spaces. Designed for ease of installation, excellent thermal performance and clean aesthetics, it is suitable for both domestic and commercial projects. Whether you are a homeowner looking to understand what is involved, or an installer preparing for the fitting process, this guide provides a clear, step-by-step overview of how a Brett Martin Flat Rooflight is installed and what to expect at each stage. 

Understanding the Brett Martin Flat Rooflight System 

Brett Martin Flat Rooflights are manufactured using a thermally broken aluminium frame paired with high-performance, double-glazed glass. The internal pane is laminated for safety, while the external pane is toughened for durability. This combination delivers excellent insulation, safety and longevity. 

The rooflight is designed to sit on a builder’s upstand or proprietary kerb, creating a low-profile, contemporary finish that sits neatly above the roof surface. Available in fixed, manual opening or electrically opening options, the system suits a wide range of applications. View the full Brett Martin Flat Rooflight range.

Preparing the Roof Opening and Upstand 

Correct preparation of the roof opening is critical to a successful installation. Brett Martin rooflights are typically installed onto a timber upstand with a minimum height of 150mm above the finished roof level. 

Before installation, check that: 

– The upstand internal dimensions match the ordered rooflight size 

– All sides are square, level and structurally sound 

– The waterproof membrane is fully dressed and sealed up the upstand 

For more detailed guidance, refer to our flat rooflight upstand requirements page.

Positioning the Rooflight on the Upstand 

Once the upstand is prepared, the rooflight can be positioned. Brett Martin Flat Rooflights are supplied fully assembled. 

Steps: 

1. Lift the rooflight into position using appropriate equipment 

2. Carefully place it onto the upstand 

3. Check alignment and level

4. Fixing the Rooflight Securely 

Fix through the pre-drilled fixing points using suitable fixings for the upstand material. Tighten evenly to avoid frame distortion. 

Weatherproofing and Sealing 

Apply the recommended sealant between the rooflight frame and the upstand. Dress the roof membrane neatly up to the frame and ensure all junctions are fully sealed. 

Glazing Performance and Thermal Efficiency 

Brett Martin Flat Rooflights offer excellent thermal performance and may include solar control and self-cleaning glass. Learn more on our flat rooflight glass options

Final Checks and Maintenance Advice 

After installation: 

– Confirm all fixings are secure 

– Inspect seals and membrane junctions 

– Check operation of opening units 

Maintenance includes periodic cleaning and annual seal inspection.

Why Choose The Rooflight Centre? 

The Rooflight Centre is the e-commerce division of Lonsdale Metal Company, a fourth-generation family business founded in 1954. Learn more About The Rooflight Centre

We offer: 

– High-performance rooflights 

– Fair pricing 

– Fast delivery 

– Dedicated expert support 

Summary 

The Brett Martin Flat Rooflight provides a modern, reliable solution for flat roofs. For advice or support, contact our team.

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