This test method assesses the degree to which asphalts interact with one another. It can indicate possible future problems, especially blistering, in a roofing product if incompatible asphalts are in contact in the product.

1.1 This test method provides a means for evaluating contact compatibility between asphaltic materials. It is generally used to determine compatibility between the saturant and coating used in the manufacture of prepared roofings. Coating and saturant will be referred to, but comparable asphaltic materials may be tested where this test procedure seems applicable.

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.