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Improved weather resistance of modified bitumen products using reflective acrylic elastomeric roof coatings

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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.
Date
3/2005
Author(s)
Joseph Rokowski
Page(s)
37-42
Keyword(s)
weather resistance; modified bitumen; reflective coating; acrylic coating; elastomeric coating


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