ASTM Int'l Develops Roofing Standard to Address Modified Bitumen Systems - ASTM D 7379
October 3, 2008 // Published as a news service by IHS
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ASTM International issued ASTM D 7379 - Test Methods for Strength of Modified Bitumen Sheet Material Laps Using Cold Process Adhesive to address the use of cold process adhesives in modified bitumen roofing systems.
Modified bitumen products have been in use since the mid-1970s and represent a substantial percentage of the commercial asphalt roofs installed throughout North America, according to ASTM International.
The standard was developed by Subcommittee D08.04 on Felts and Fabrics, part of ASTM International Committee D08 on Roofing and Waterproofing.
According to Carter Slusher, modified bitumen/polyiso systems engineer, Firestone Building Products Co. and member of Committee D08, ASTM D 7379 can be used to find the bond strength of a modified bitumen/cold adhesive system as a function of cure time.
"The most likely users of [ASTM] D 7379 are manufacturers of modified bitumen membranes, manufacturers of asphaltic cold process adhesives and independent test labs that wish to determine the bond strength characteristics of various combinations of asphaltic membrane and asphalt-based adhesive," said Slusher.
Slusher said, with the approval of ASTM D 7379, Committee D08 will begin developing a proposed new product standard, which is under the jurisdiction of Task Group D08.20.37 on Cold Process Adhesive Modified Bitumen Roof Systems.
The task group is seeking participation from anyone who is familiar with modified bitumen products and asphalt-based cold process adhesives, especially those who have the equipment and resources to participate in a round robin study.
Source: ASTM International.