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Significance and Use
This test method is used to determine the extent of coverage of the granular surfacing over the asphaltic coating in a sample of mineral surfaced roofing. The results determine compliance with the applicable specification requirements or may be used for comparative analysis. This test method applies to both “as manufactured” material and material that has weathered or undergone other types of exposure.
1.1 This test method covers the determination of the hiding power of granules on a mineral surfaced roofing sheet. The test is used primarily after an abrasion test has been conducted, to determine the portion of asphaltic compound that has been exposed as a result of the abrasion test.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.3 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D4977 Test Method for Granule Adhesion to Mineral Surfaced Roofing by Abrasion
ICS Number Code 91.060.20 (Roofs)
UNSPSC Code 30151500(Roofing materials)