UL 55A

Standard for Materials for Built-Up Roof Coverings



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).


DETAILS

  • Edition Number: 13
  • Edition Date: 11/19/2004
  • Price Code: A
  • Type: ulstd
  • ANSI Approved:
  • DOD Approved: