Distortion Resistant Roofing Material
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United States of America Patent
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Issued Date -
Mar 4, 2010
app pub date -
Aug 28, 2009
filing date -
Aug 28, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A roofing material, such as laminated shingles, comprising fines deposited on an upper surface of the roofing material, particularly on one or more non-weathering regions, such as on the headlap region, and/or shim layer. The fines may be deposited, for example, as a strip from about 0.5 inches to about 2.5 inches in width and extend the length of the roofing material at a fixed position from one edge of the roofing material to the opposite edge of the roofing material. The fines may comprise mica flakes, copper slag, coal slag, sand, talc, expanded clay, slate flour, powdered limestone or silica dust.
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Cited Art Landscape
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