1.1 This test method covers the procedure for the physical testing and analysis of surface cracking due to low temperature unrolling of roofing composed of bituminous impregnated felts and reinforced polymer modified bituminous sheet materials. These products may employ various surfacing materials on one side.1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.3 This standard does not purport to addr