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Professional Building Supplies£19.02Visit shop Cromar Grp Roofing Raised Edge Trim - 105Mm (W) X 105Mm (H)
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The Cromar GRP Roofing Raised Edge Trim is an essential component for professional roofing contractors and serious DIY enthusiasts looking to secure the perimeter of a GRP (Glass Reinforced Plastic) roofing system. Its primary benefit is providing a clean, watertight upstand that ensures rainwater is efficiently directed toward drainage points, preventing lateral water ingress. While it offers superior structural integrity and longevity, users should note that successful installation requires precise application of dedicated bonding adhesives to ensure a lasting seal.
| Model Part Number | B230 |
|---|---|
| Brand | Cromar |
It acts as a raised edge or upstand to keep water on the roof and direct it toward designated drainage outlets.
No, you must use a dedicated bonding agent like Cromar PU trim adhesive to ensure the trim stays fixed to the battens under weather stress.
The trim measures 105mm by 105mm.
Ensure battens are clean, dry, and free of loose debris. Priming is not required if the wood is clean, but ensure the surface is stable.
Yes, it is a professional-grade product suitable for both residential and commercial GRP flat roofing projects.
GRP can be cut easily using a fine-toothed hand saw or an angle grinder with a suitable cutting disc.
Ensure adhesive was applied in the correct 30mm bead pattern and that the substrate (timber battens) was dry and free of dust before application.
Use matching GRP jointing tape or resin and tissue to bridge the joint between trim lengths, ensuring a continuous waterproof barrier.
To install, ensure your timber battens are securely fixed to the roof edge. Apply the Cromar PU trim adhesive in 30mm beads at 300mm centres along the length of the battens. Bed the trim down firmly to ensure complete contact. The trim is fully compatible with standard GRP roofing kits and resins. Care for the product is minimal; regular inspections during annual roof maintenance to check for debris buildup and ensuring the seal remains intact is typically sufficient for a service life that often exceeds the life of the roof surface itself.
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