New Guide for Application of Hot-Applied Rubberized Asphalt for Roofing and Waterproofing
1. Scope
1.1 This guide provides recommended procedures for the installation of hot-applied rubberized asphalt (HRA) membrane for roofing and waterproofing applications in which the membrane will be protected from sunlight and potential physical damage. 1.2 This guide applies to fabric-reinforced HRA membranes and unreinforced HRA membranes installed over substrates approved by the HRA manufacturer. 1.3 This guide is intended primarily for new construction, but includes general guidelines for installations on existing, sound structural concrete and panelized substrates deemed in good condition by the project team and HRA membrane manufacturer. 1.4 Typical applications include protected membrane roofing systems, and waterproofing concrete slab construction on plaza decks, parking garages, roof terraces, pedestrian concourses or podiums, foundation walls, bridge decks, reflective pools, and planters.
