Abstract: The combination wedge and notch trowel includes a reversible grip handle and an integrated wedge, for applying cement or adhesive to a substrate surface for installation of tiles. The ergonomically contoured reversible handle allows a user to use the notch trowel in a forward or backwards position with the same hand. The blade portion includes a notch pattern of conically shaped trapezoidal notches and large parabolic notches. The integrated wedge allows a user to use the wedge side of the trowel to pry up and remove tiles.

Abstract: A composite board for use as backerboard for tile includes outer reinforcement portions and a polystyrene layer disposed between the two outer reinforcement portions, at least one of the outer reinforcement portions being an outer mat fabric reinforcement layer with a mat fabric, and a non-shrinking cement compound saturating and connecting the two outer portions with the polystyrene substrate. A method of installing a composite tile backerboard involves placing the composite board against a fixture protruding from a flat surface, pressing the composite board against the fixture to emboss the features of the fixture on the surface of the composite board, and cutting a hole in the composite board based upon the features of the fixture embossed on the composite board.

Abstract: A composite board for use as backerboard for tile, the board including a mesh layer with a mesh fabric, a mat layer with a mat fabric and a polystyrene layer disposed between the two portions where a non-shrinking cement compound saturates and connects the two outer portions with the polystyrene substrate. The composite board's mesh layer incorporates a stretchable mesh which in conjunction with the polystyrene substrate and the non-shrinking cement compound supports standard fasteners used in the home-building industry along with providing a suitable tile adhesion surface. The mat layer incorporates a fiberglass mat which provides high rigidity as well as being suitable for contact with an inner wall or studs. The combination of materials provides a backerboard that is light weight, rigid, economical and easy to build with.