Patent ID: 7229577

Claim:
A method of forming a bathtub liner comprising the steps of: providing a suitably sized liner for an existing bathtub; positioning the suitably sized liner over the existing bathtub; attaching compensating members to a bathtub forming apparatus, wherein the compensating members comprise a length compensating member and a width compensating member; positioning the bathtub forming apparatus over the suitably sized liner, the apparatus having a cavity; positioning a weight on top surface of the bathtub forming apparatus, wherein the weight is associated with a container, to, in turn, enhance the effectiveness of a seal member, the container having at least one of an inlet and an outlet, capable of storing a predetermined quantity of liquid therein; heating the suitably sized liner to a sufficient temperature to permit deformation; pressurizing the cavity formed by the suitably sized liner and the bathtub forming apparatus; and deforming the suitably sized liner.