Rooftop curable heat seamable roof sheeting and method for covering roofs
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United States of America Patent
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Sep 7, 1993
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N/A
app pub date -
Apr 24, 1991
filing date -
Apr 24, 1991
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Abstract
A rooftop curable heat seamable sheet material for roofing prepared from an uncured polymeric composition of matter comprises a semi-crystalline polymer having more than about 2 percent by weight crystallinity and selected from the group consisting of polyolefins prepared from monomers containing at least 2 carbon atoms, a filler selected from the group consisting of reinforcing and non-reinforcing materials and mixtures a processing material or mixtures thereof; and a cure package capable of allowing the composition of matter to cure at temperatures of at least about 50.degree. C. A method for covering a roof is also provided and comprises the steps of applying layers of rooftop curable sheet material prepared from said uncured heat seamable polymeric composition of matter to the roof being covered; overlapping adjacent edges of the layers; and seaming the overlapping areas under sufficient heat and some pressure to provide acceptable seam strength, the composition of matter being curable at temperatures of at least about 50.degree. C.
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