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Professional Building Supplies£15.70Visit shop Cromar Grp Roofing Universal External Corner
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The Cromar GRP Universal External Corner is an essential component for professional roofers and DIY enthusiasts installing a ProGRP roofing system. Its primary benefit is providing a clean, watertight, and aesthetically pleasing seal on external roof edges, though users should note it is specifically engineered for compatibility with the ProGRP trim range rather than generic roofing products.
| Model Part Number | C1EXTCOR |
|---|---|
| Brand | Cromar |
No, this specific product is designed exclusively for external corners. You will need a different component for internal angles.
This component is specifically designed for the ProGRP roofing trim system and may not provide a watertight or aesthetically correct fit with other brands.
The component is made from high-quality Glass Reinforced Plastic (GRP), known for its strength and weather resistance.
Please check the specific product batch or your supplier catalog for available color finishes to match your trim.
You generally only require standard professional roofing tools, including a sealant gun, measuring tape, and appropriate fasteners.
Ensure the underlying trim is correctly aligned and that there is no excess dried adhesive or debris preventing a flat fit.
Verify that the sealant bead is continuous and that the corner is properly sloped to shed water toward the gutter system.
To install, ensure the roof edge is prepared and the base ProGRP trims are securely fitted. Apply a suitable high-quality roofing sealant or bonding agent to the contact areas of the corner piece before pressing it firmly over the trim joints. Mechanically fix the corner in place according to the ProGRP system guidelines. Regarding care, the GRP material is inherently low-maintenance; it should be periodically inspected during routine roof checks to ensure that the adhesive seal remains intact and that the piece has not shifted due to extreme thermal expansion or contraction. Clean with mild soapy water if debris accumulates on the surface.
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