PRO-555 is a high tack, low moisture adhesive for applying new vinyl wallcovering over surfaces where added adhesion is required. Otherwise known as Vinyl over Vinyl previously. It is a high-tack, low-moisture adhesive for applying new vinyl wallcovering over existing wallcovering. It applies easily with brush or roller. Coverage: 160 sq. ft. per gallon. High tack, low moisture paste for hanging new vinyl over existing vinyl. Provides maximum stick with excellent lip and open time. Eliminates priming and sizing.