Washbasin liner method and article

A method of renovating a washbasin comprising the steps of:

• forming a plug at said washbasin to be renovated by applying a first hardening material to the interior surface of said washbasin, allowing the hardening material to harden, and removing said plug from said washbasin;
• applying a second hardening material to the exterior surface of said plug, and allowing said second hardening material to harden to form a master mold which is removed from said plug;
• heating a sheet of plastic;
• thermoforming said sheet of heated plastic to have a shape substantially identical to that of the interior of the washbasin by sucking said heated sheet of plastic into said master mold by means of a vacuum applied through said master mold;
• removing said thermoformed sheet of plastic from said master mold and applying reinforcing resinous backing to the back side of said thermoformed sheet of plastic, said reinforcing resinous backing including a strengthening filler mixed therewith;
• applying a water-resistant adhesive between substantially the entire interior surface of said washbasin and substantially the entire backside of said reinforced thermoformed sheet of plastic to adhere said reinforced thermoformed sheet of plastic to said washbasin;
• said thermoformed shaped plastic having a thickness of from 50 to 125 mils substantially throughout and said reinforcing resinous backing having a thickness within the range of from 75 to 150 mils.