GRP Horizontal Drain Outlet

GRP Horizontal Drain Outlet | GRP Through-Wall Roof Discharge

Controlled Horizontal Drainage for GRP Roofs

The GRP Horizontal Drain Outlet creates a through-wall discharge point on GRP flat roofs, allowing water to drain into a hopper or similar collection point. Ideal for parapet walls, terraces, and deck edges, it prevents water build-up at vulnerable roof details.

Seamless Integration with Your GRP System

Manufactured from a seamless GRP tube with 900g chopped strand matting bonded to the flange, the outlet laminates directly into the roof system. Dressing the membrane over the internal diameter and fully consolidating ensures a watertight connection, reducing the risk of pinholes, edge weakness, or future water ingress.

Installation Overview

Laminate the outlet into the GRP roof, dress the membrane onto the internal diameter, and consolidate fully for a flush, efficient, permanent connection.

Specifications

Pack size:

• 1 × GRP Horizontal Drain Outlet

Size:

• Pipe diameter: 82mm or 110mm
• Pipe length: 500mm

Application: Through-wall horizontal discharge for GRP flat roofs, integrated into the roof laminate for a permanent, watertight outlet