Architectural · A-RSQWD

Hra Membrane - At Pipe Penetrations Typ

Materials

Elements

Columns Decks Waterproofing / Flashing Drainage Roof / Floor Openings

About this detail

This waterproofing assembly details a pipe or column penetration through a concrete deck utilizing a hot fluid applied membrane paired with an asphalt protection sheet and a drainage mat. The waterproofing system transitions up the vertical pipe surface, where an uncured neoprene flashing is secured with a stainless steel band clamp. In covered or buried conditions, the flashing must extend a minimum of six inches above the substrate as specified in the drawing notes. Penetrations must be rigidly secured to the structure to prevent vertical or lateral movement, with exposed deck clamps prohibited. Certain metallic and plastic pipe materials require surface roughening, sanding, and surface conditioner to achieve proper membrane adhesion, while all metal pipes must remain free of oil and rust.

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