This C3 External Corner from Cromar is a cutting-edge solution in GRP construction. It’s a hot press-moulded, pre-formed external corner that eliminates the need for intricate corner mitres on the D260 fillet trim. Installation is a breeze, as the corner seamlessly nails to the deck at both the corner and midpoint.

Ensure a watertight seal by applying a slender line of PU sealant along the joint between the trim and the corner, swiftly wiping away any excess. Take it a step further for enhanced durability by bandaging the joint with a 75mm fibreglass mat. Simplifying and fortifying corner connections, the C3 External Corner is your key to efficient and reliable GRP construction projects.