Foam backed siding panel

A siding member for covering an exterior of a structure, the siding member comprising:

• a thermoplastic siding panel having an upper edge, a lower edge, a nail hem, a front face and a rear face, wherein the rear face is generally shaped to provide a receptacle capable of retaining a liquid material;
• a first extension and a first channel located at an upper edge of the siding member;
• a second extension and a second channel located at a lower edge of the siding member, wherein the first extension and first channel are configured for cooperative engagement with the second extension and second channel of a superjacent siding member;
• and
• a resin based stiffening material filling the receptacle wherein the resin based stiffening material has an index of less than 150 and the resin based stiffening material is cured in position under pressure with a heated curing surface.

A siding member for covering an exterior of a structure, the siding member comprising:

• a thermoplastic siding panel having a nail hem and a rear face, wherein the rear face is generally shaped to provide a receptacle capable of retaining a liquid material;
• a first extension and a first channel located at an upper edge of the siding panel;
• a second extension and a second channel located at a lower edge of the siding panel, wherein the first extension and first channel are configured for cooperative engagement with the second extension and second channel of a superjacent siding member;
• a resin based stiffening material filling the receptacle wherein the stiffening material has an index of less than about 150 and a curing member applies pressure in the range of about 4-25 psi at a temperature of about 150° F. to the resin based stiffening material forming a back surface of the siding member;
• and
• at least one stand-off rain screen feature extending outwardly from the back surface of the stiffening material between the upper edge and the lower edge of the siding panel to facilitate drainage of moisture when the siding member is attached to the exterior of the structure.