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Abstract
Asphalt roofing substrates fail by loss of low molecular weight fractions, heat-induced degradation, and fracturing. Aluminized asphalt coatings and acrylic elastomeric roof coatings have been used over modified bitumen roofs but sometimes fail in the areas of asphalt stain bleed-through or blistering in ponded water situations. In addition, aluminized asphalt coatings do not generally pass emissivity values recommended by the EPA.
Asphalt roofing substrates fail by loss of low molecular weight fractions, heat-induced degradation, and fracturing. Aluminized asphalt coatings and acrylic elastomeric roof coatings have been used over modified bitumen roofs but sometimes fail in the areas of asphalt stain bleed-through or blistering in ponded water situations. In addition, aluminized asphalt coatings do not generally pass emissivity values recommended by the EPA.
Date
3/2005
3/2005
Author(s)
Joseph Rokowski
Joseph Rokowski
Page(s)
37-42
37-42
Source
Roof Consultants Institute
Roof Consultants Institute
Keyword(s)
weather resistance; modified bitumen; reflective coating; acrylic coating; elastomeric coating
weather resistance; modified bitumen; reflective coating; acrylic coating; elastomeric coating