scope:

This standard establishes safe operating practices for the installation, maintenance and removal of membrane roofing that is seamed or seamless on lowsloped roofs with a maximum slope of four and twelve. These types of roofs include but are not necessarily limited to: hot and cold built-up roofing, single-ply roofing, polyurethane foam (PUF) roofing, liquidtype roofing (Hypalon®, polyurethane, etc.), modified bitumens.

NOTE: This standard does not apply to composition or wood shingles, slate, tile and metal roofs that are normally installed on roofs with slopes four and twelve or greater.