1. Rationale
Ballot Change: Add surface preparation procedure to section 8.1 Repair of Holes Made By Removal of Core or Slit Samples. Rationale: While the specification describes how to fill the holes left by removal of cores and slits, it does not indicate how to prepare or clean the surface of the SPF roof before applying sealant. This change provides a procedure for verifying the surface is clean sufficient for good adhesion of the sealant to the SPF roof surface.
Keywords
coating thickness; core samples, roofing; polyurethane foam lifts; slit samples; sprayed polyurethane foam;
Citing ASTM Standards
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