Abstract
What asked for durability test methods for roof membrane systems is durability of their performance, not durability of the individual materials that compose the systems. However, the most tests that have been adopted as durability tests only focus on roofing material itself. Therefore it has been difficult to estimate durability of roof membrane systems by the present test methods. In this study, new test methods to make clear performances of roof membrane systems were proposed from the idea of combining the performance tests for them described in JASS 8 with degradation conditions. The items for degradation are heat, ultraviolet irradiation, ozone and moisture. The durability of the four kinds of commercial roof membrane systems was experimentally estimated using the proposed test methods.
