RhinoRoof HT is a self-adhering roof underlayment comprised of a textured non-woven polypropylene weathering surface that is green with black lettering, a high temperature resistant  modified bitumen backing compound and a self-adhering selvage area.
Ratings
ASTM D1970
Product has met specification requirements of ASTM D1970. RhinoRoof HT shall not be left exposed as a temporary roof for more than 90 days.
ASTM E108 (Fire)
Product has met Class A requirements of ASTM E108 when installed over minimum 15/32in thick APA-rated plywood decks with allowable roof covers of asphalt shingles (ASTM D3462). Slope is unlimited.
Product has met Class C requirements of ASTM E108 when installed over minimum 15/32in thick APA-rated plywood decks with allowable roof covers of minimum 26ga steel shingles or panels. Slope is unlimited.