BUILDING MATERIALS, NAMELY, VERTICAL SUPPORT STRIPS FOR USE IN THE INSTALLATION AND SUPPORT OF CORNER PANELING, CONTOURED AND NON-CONTOURED UNDERLAYMENT BOARDS, SHIP-LAPPED UNDERLAYMENT BOARDS, CONTOURED AND NON-CONTOURED SHEETING FOR USE WITH VINYL AND ALUMINUM SIDING AND FOR AIDING IN THE INSTALLATION OF VINYL AND ALUMINUM SIDING