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Title
An Epic Run
An Epic Run
Date
7/2018
7/2018
Author(s)
Rene Dupuis
Rene Dupuis
Page(s)
48-52
48-52
Keyword(s)
adhesive; water-based; membrane; Sarnacol
adhesive; water-based; membrane; Sarnacol
Abstract
Adhered single-ply membrane roof systems came into use during the latter part of the 1970s. At the time, the primary bonding adhesives in use were made from solvent-based neoprene, and the classical roof insulation boards used were wood fiberboard, perlite and rigid fiberglass with asphalt-adhered kraft paper facers. Neoprene adhesives typically were loaded with toluene and hexane; these strong solvents are needed to dissolve and carry the neoprene polymer matrix. The volatile organic compound (VOC) level in some of the original formulations was at or near 450 grams per liter. A good bonding adhesive mates two dissimilar surfaces together; has good initial and long-term bond strength with high shear resistance; withstands large temperature swings; and resists spread of flame. The original neoprene and solvent-based adhesives were 25 percent solids (nominal); the remainder was a mixture of volatile compounds (solvents).
Adhered single-ply membrane roof systems came into use during the latter part of the 1970s. At the time, the primary bonding adhesives in use were made from solvent-based neoprene, and the classical roof insulation boards used were wood fiberboard, perlite and rigid fiberglass with asphalt-adhered kraft paper facers. Neoprene adhesives typically were loaded with toluene and hexane; these strong solvents are needed to dissolve and carry the neoprene polymer matrix. The volatile organic compound (VOC) level in some of the original formulations was at or near 450 grams per liter. A good bonding adhesive mates two dissimilar surfaces together; has good initial and long-term bond strength with high shear resistance; withstands large temperature swings; and resists spread of flame. The original neoprene and solvent-based adhesives were 25 percent solids (nominal); the remainder was a mixture of volatile compounds (solvents).