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RAS-Tech & Checmblueprint have developed a proprietary process for removing the “filled asphalt coating” from waste shingle streams. Filled asphalt coating waterproofs the product and consists of a mixture of 35 percent oxidized asphalt and 65 percent 200 mesh limestone filler. The granule surface, the sand backing and the fiberglass mat reinforcement are all removed. […]

Uncured butyl manufacturers


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