Waterproofing membrane and methods of use
OwnerDenis Faucherinventor
Life of this patent
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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.
Claims23
A waterproofing membrane to be applied on a surface comprising a bituminous layer of bitumen based waterproofing material having opposite first and second sides and having a thickness of from 0.5 mm to 4 mm;
- a protective layer of impervious surfacing material directly adhered to said first side of the bituminous layer;
- a support sheet layer made of a porous material and having a first and second surface with the first surface directly adhered to the second side of the bituminous layer by means of the waterproofing material transuding partially into the pores of the support sheet;
- and an adhesive coating to be partially transuded into the pores of the support sheet and to be adhered to the surface.
A method of waterproofing comprising the steps of:
- providing a support sheet layer, the support sheet layer made of a porous material and having a first and second surface;
- heating and applying a bituminous layer of bitumen based waterproofing material to the first surface of the support sheet so that the resulting bituminous layer has a thickness of from 0.5 mm to 4 mm, and an exposed side;
- adhering a protective layer of impervious surfacing material directly to said exposed side of the bituminous layer, the protective layer, bituminous layer and support sheet layer forming a waterproofing membrane;
- applying an adhesive coating to at least one of a support surface and the second surface of the support sheet;
- and
- adhering the second surface of the support sheet layer to the support surface by the adhesive coating.
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.
Dependencies are inferred from the claim text.