1.1 This specification covers asphalt impregnated and coated glass fiber base sheet, with or without perforations, for use as the first ply of the built-up roofing. When not perforated, this sheet may be used as a vapor retarder under or between roof insulation with solid top coating of asphaltic material.
1.2 The values stated in inch-pound units are to be regarded as the standard.
Product Details
- Published:
- 01/10/1998
- Number of Pages:
- 2
- File Size:
- 1 file , 53 KB
