flashing PVC soil stack roof

Pipe Penetration Dynamics: Flashing Soil Pipes, HVAC Conduits, and Exhaust Stacks on Sloped Shingle Roofs

• September 23, 2026
• admin

In residential and commercial building design, vertical service penetrations are unavoidable structural elements of the roof plane. Every bathroom group requires a through-the-roof soil vent pipe (typically 75 mm to 110 mm PVC), kitchen exhaust hoods require ducted discharges, and solar thermal or heat-pump split systems route insulated refrigerant copper lines through the building envelope. …