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[quote]QUOTE: Originally posted by rororo FYI - Tar paper is not a finish roofing material. It is always used underneath shingles, mineral rolls, and hot tar pours on flat roofs. I suspect everyone is referring to mineral roll roofing. Tar paper is just that --- paper. [/quote] Correct. When modeling a flat, built-up roof, the grit in the sandpaper is to represent the aggregate such as gravel whose purpose is to protect the butumen beneath from the sun and weather and add fire-resistance to the surface. Wayne
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