In January 2006, the Midwest Roofing Contractors Association
(MRCA) and NRCA
released "Fire testing of membrane roof systems." This report
summarizes a long-term study of fire-resistance properties of new
and aged membrane roof systems and questions the variability within
the fire test method used for evaluating roof systems.
Although there have been several recent developments addressing
some of the test method concerns raised, unresolved issues
study raised concern regarding the variability associated with the
spread-of-flame portion of ASTM E108, "Standard Test Methods for
Fire Tests of Roof Coverings." ASTM E108 and a similar standard, UL
790, "Standard for tests for fire resistance of roof coverings,"
serve as the technical basis for determining many roof systems'
external fire-resistance properties with regard to...