Stress-relieving barrier membrane for concrete slabs and foundation walls
AssigneePolyguard Products, Inc.
InventorsJohn W. Muncaster, Tony Joe Millican
Life of this patent
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Abstract
A composite membrane comprising a layer of rubberized asphalt having a heavy duty plastic film layer continuously bonded to one side and, optionally, a layer of nonwoven geotextile continuously bonded to the other side. The membrane can be used in vertical or horizontal applications, and is particularly useful for its stress-relief properties that resist crack formation and propagation in concrete walls and slabs in addition to serving as a barrier to moisture, toxic substances and insects. An appropriate composite membrane of the invention can be advantageously utilized in positive side, blindside, underslab or split slab applications. The thickness of the composite membrane preferably ranges from about 30 mils to about 150 mils.
Claims24
In combination with a concrete substrate, a layered composite waterproofing membrane comprising a layer of rubberized asphalt having first and second sides with a flexible layer of durable plastic film continuously bonded to the first side and a layer of geotextile having opposed first and second faces with said first face continuously bonded to the second side of said rubberized asphalt and said second face bonded directly to the concrete substrate.
Dependencies are inferred from the claim text.