US 5,316,848 A · Waterproofing membrane

Abstract

The present invention relates to a waterproofing membrane comprising a carrier, a synthetic adhesive coated on one face of the carrier substrate, and a protective layer coated on the synthetic adhesive. The present invention also relates to a method of waterproofing post cast concrete structures comprised of affixing a carrier to the inside of a concrete form and post casting concrete, wherein the carrier further comprises a synthetic adhesive coated with a protective coating. Furthermore, the present invention relates to post cast concrete structures comprising a waterproofing membrane adhered to all or part of the exposed surface of said structure, wherein said membrane comprises a carrier, a synthetic adhesive coated on one face of the carrier substrate, and a protective coating on the synthetic adhesive and wherein the protective coating face contacts said structure.

Claims23

Dependent claims

A waterproofing membrane laminate, comprising:

a carrier layer having first and second major faces, said first major face operative to permit said carrier layer to be disposed against a lagging form;
a styrene-isoprene-styrene adhesive layer adhered to said second major face of said carrier layer, said adhesive layer being pressure sensitive and having a penetration greater than 30 dmm (150 g. 5 sec., 70.degree. F.) according to ASTM D 5-73;
an acrylic-based elastomeric coating layer adhered to said styrene-isoprene-styrene adhesive layer;
and
said styrene-isoprene-styrene adhesive layer and said acrylic based coating layer being operative, after seven days outdoor exposure to sunlight, to provide without cracks a fully adhered bond with concrete that is wet cast against said layers and allowed to set.

2 more elements

Dependencies are inferred from the claim text.

Waterproofing membrane

Life of this patent

Waterproofing membrane

Life of this patent

Abstract

Claims23