Rubberized roof underlayment
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United States of America Patent
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Jul 11, 2017
Issued Date -
N/A
app pub date -
Apr 8, 2014
filing date -
Sep 29, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An underlayment product comprises a fibrous mat having an upper surface and a lower surface. A rubberized asphalt coating is applied to the lower surface of the fibrous mat and extends at least partially into the fibrous mat. In one heavyweight underlayment, an oxidized asphalt coating is applied to the upper and lower surfaces of the fibrous mat generally encapsulating the fibrous mat including the rubberized asphalt coating provided on the lower surface of the fibrous mat. The oxidized asphalt layers may be coated with a release layer such as talc, granules or a polymer. In a lightweight underlayment, a split release sheet or facer segmented to provide a releasable selvedge edge and incorporating a high traction polymer on its surface is applied to the rubberized asphalt.
First Claim
Family
International Classification(s)
Cited Art Landscape
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