Abstract
Self-sealing asphalt shingles that are unsealed are vulnerable to damage when exposed to strong winds. The potential for damage is related to a number of factors, including fastener locations. A consortium of the National Roofing Contractors Association (NRCA) and four manufacturers sponsored research on wind performance of unsealed shingles in a wind tunnel to establish a correlation between shingle damage and a matrix of factors. This paper presents an analysis of the relationship between fastener location and shingle damage, based on data collected during the wind tunnel testing. It also reports on manufacturers' recommendations regarding fasterner location variations. Conclusions are recommendations based on the data analysis are provided. Currently, there are no industry-accepted criteria on allowable variations fo the location of fasteners used to attach asphalt shingles. The paper's recommendations can be used to establish allowable fastener location variations. The recommendations also can be used to provide direction as to when corrective action needs to be taken for fasteners that deviate from target locations.
Self-sealing asphalt shingles that are unsealed are vulnerable to damage when exposed to strong winds. The potential for damage is related to a number of factors, including fastener locations. A consortium of the National Roofing Contractors Association (NRCA) and four manufacturers sponsored research on wind performance of unsealed shingles in a wind tunnel to establish a correlation between shingle damage and a matrix of factors. This paper presents an analysis of the relationship between fastener location and shingle damage, based on data collected during the wind tunnel testing. It also reports on manufacturers' recommendations regarding fasterner location variations. Conclusions are recommendations based on the data analysis are provided. Currently, there are no industry-accepted criteria on allowable variations fo the location of fasteners used to attach asphalt shingles. The paper's recommendations can be used to establish allowable fastener location variations. The recommendations also can be used to provide direction as to when corrective action needs to be taken for fasteners that deviate from target locations.
Date
9/1999
9/1999
Author(s)
Thomas Smith; Matt Millen
Thomas Smith; Matt Millen
Page(s)
98-
98-
Keyword(s)
asphalt shingle; blow off; fastener location; tolerance; nail location; wind performance; unsealed asphalt shingle
asphalt shingle; blow off; fastener location; tolerance; nail location; wind performance; unsealed asphalt shingle