Inorganic fiber mat based bituminous sheet materials
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United States of America Patent
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Oct 3, 1989
Grant Date -
N/A
app pub date -
Aug 5, 1983
filing date -
Aug 5, 1983
priority date (Note) -
Expired
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Abstract
An improved inorganic fiber based roofing shingle for use in both high and low temperature environments is prepared by pre-coating an inorganic fibrous substrate with a polymer/bitumen composition prior to the application of a conventional asphalt or bitumen top coat, wherein the polymer content of the bitumen/polymer pre-coat composition ranges from about 3 to 99% by weight.
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