Limitations of present test methods for roofing materials

A development study of test methods and criteria for evaluating new roofing materials is described: prefabricated polymeric and elastomeric sheets, prefabricated modified bituminous membranes, and liquid applied membranes. Results are summarized for a number of materials selected as typical of the three groups in order to illustrate the problems and the limitations associated with the different tests.
Proceedings of the 1st International Conference on Durability of Building Materials and Components: 21 August 1978, Ottawa, Ont. Canada