Waterproofing membrane and methods of use
OwnerDenis FAUCHERinventor
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Abstract
A waterproofing membrane and uses for it. The membrane has a layer of bitumen based material on a sheet of support material, and preferably has a protective layer on the bituminous material to allow the membrane to be easily unrolled if it is shipped in a roll. It is to be installed to a surface by an adhesive coating and can be provided adhered to a board to form a waterproofing panel. The membrane can be used as an adhesive to apply a decorative facade on a wall in addition to being used for sole waterproofing purposes. The decorative facade is applied subsequently to heating the membrane, which volatilizes the protective layer and softens the bituminous layer. To increase the adhesiveness of the membrane, a tackifier such as styrene-isoprene-styrene is blended into the bituminous layer.
Claims11
A method of adhering appliqués to a membrane having a bituminous layer of bitumen based waterproofing material, the method comprising the steps of:
- softening a selected portion of the bituminous layer by heating;
- and
- applying the appliqué against the selected softened portion of the bituminous layer.
The method of 6 wherein the bituminous layer has at least 50% by weight of bitumen, and a softening temperature above 70 degrees C.
The method of 6 wherein the tackifier is styrene-isoprene-styrene (SIS) and constitutes between 12 and 18% by weight of the bitumen based material.
The method of 6 wherein the protective layer is adapted to volatilize when submitted to said heating.
The method of 1 wherein the appliqué is selected from brick, stone, ceramic tile, a board, and an insulating material, and has less than 20 pounds per square foot of surface to be adhered.
Dependencies are inferred from the claim text.