Easily integrate our Brett Martin Flat Glass top unit with your builder's kerb. To ensure a perfect fit, just measure the external dimensions of your weathered kerb. If your kerb measures 900mm x 900mm, select the corresponding 900mm x 900mm Flat Glass unit for seamless installation.
Rooflight is supplied complete with a uPVC frame that fixes to the top of the builder's upstand and houses any opening/ventilation equipment

For mounting at the roof surface level, providing 150mm of waterproofing height

For mounting typically below roof surface level, providing 300mm of height for insulation and waterproofing

For a smooth and efficient installation, refer to the video guide and downloadable PDF instructions provided. The Brett Martin Opening Flat Glass Skylight is designed for easy fitting, whether mounted directly onto a builder’s upstand or using a PVC kerb for new and retrofit applications. With hidden actuators and a secure, thermally efficient frame, proper installation ensures optimal performance, weather resistance, and long-term durability. Always follow the recommended guidelines to achieve a seamless finish and maximize the benefits of natural light and ventilation in your space.