1.1 These requirements cover the following materials for use in the construction of built-up roof coverings: a) Hot-Mopping Asphalt - For use in the construction of coverings having either no surfacing or utilizing surfacings of cold-application roof coating on inclines not exceeding 12 inches (305 mm) to the horizontal foot, and for use in the construction of coverings surfaced with gravel, crushed stone, or crushed slag, on inclines not exceeding 3 inches (76 mm) to the horizontal foot. b) Asphalt-Saturated Organic Felt - Type 15 (plain or perforated) and Types 20 and 30 (plain), including cap and base sheets. c) Coal-Tar Pitch - For use in the construction of coverings surfaced with gravel, crushed stone, or crushed slag, on inclines not exceeding 3 inches (76 mm) to the horizontal foot. d) Coal-Tar Saturated Organic Felt - Type 15. e) Asphalt-Coated Glass-Fiber Mat (Felt) - Type G1 (ply sheets), Type G2 (cap and base sheets), and Type G3 (granular-surfaced cap sheets).
UL 55A BULLETIN-2008 history
2008UL 55A BULLETIN-2008 UL Standard for Safety Materials for Built-Up Roof Coverings COMMENTS DUE: April 18, 2008
2004UL 55A BULLETIN-2004 UL Standard for Safety Materials for Built-Up Roof Coverings
2004UL 55A-2004 UL Standard for Safety Materials for Built-Up Roof Coverings Thirteenth Edition
1993UL 55A-1993 UL Standard for Safety Materials for Built-Up Roof Coverings (Thirteenth Edition)