This PVC vent pipe integrates with mechanically fixed membranes to provide a clean, reliable penetration for extract or ventilation runs. A flat flange seats beneath fixings to form a watertight interface around the body, so the junction remains secure without relying on wet trades. Inside, the pipe’s smooth bore supports designed airflow rates with minimal resistance, helping fans run quieter and more efficiently. Installation is straightforward: align the flange, fix, seal edges and connect ductwork—crews achieve a tidy, repeatable detail that reads discreet from ground level. The PVC construction makes compatibility simple and keeps cleaning or inspection easy over time. Use the assembly for soil stacks, mechanical extracts or passive vents where the roof covering is held down mechanically but the penetration still needs to look resolved. The PVC vent pipe does exactly that—clear paths for air, a sealed perimeter and a finish that blends into the roof.