Three-dimensional reverse tanking membranes
AssigneeW. R. Grace & Co.-Conn.
InventorsJyoti Seth, Jay Kellett, Makam S. Chetan, Neal S. Berke
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Abstract
Shaped waterproofing membranes having three-dimensional contours are useful for the “reverse tanking” waterproofing of detail areas such as those presented by “tiebacks,” pipes, pile caps, and other irregularities that occur on concrete formworks and other civil construction or building surfaces. A preferred method for making such membranes is to thermoform a membrane laminate, having a carrier support sheet, waterproofing adhesive, and optionally a protective coating layer, as a single unit.
Claims17
A pre-formed, shaped waterproofing membrane comprising a carrier support sheet having first and second opposed major faces and, disposed over said first major face, a pressure-sensitive waterproofing adhesive layer operative to bond with post cast concrete, said shaped membrane having a hollow three-dimensional contour surrounded by a flat collar portion, wherein said three-dimensional contour extends outwardly from said first major face and is of sufficient size to cover a surface irregularity in a building or civil construction surface.
Dependencies are inferred from the claim text.