Outlets & Collars

Effective flat roof drainage depends on properly detailed outlet points, and this range of GRP outlets and collars provides purpose-made solutions for each common scenario. All three trims are manufactured in glass reinforced plastic to match the durability and weatherproofing of the main roof laminate, and are designed to integrate cleanly with GRP, liquid-applied, and other flat roofing systems.

The GRP Soil Pipe Cuff Trim collars around an existing soil or vent pipe penetrating the roof, creating a weathertight seal between the pipe and the laminate. The GRP Through Wall / Parapet Outlet Trim provides a pre-formed drainage channel through a parapet wall, directing water from the roof surface to the outside face of the wall. The GRP Floor Drain Trim is used where drainage is taken vertically through the roof deck into a below-deck drainage system. All are fixed using PU adhesive, available separately.