Henry 430 ClearPro is a premium clear thin-spread adhesive designed to install vinyl composition tile (VCT) in residential and commercial installations. Dries clear and has excellent initial grab and ultimate bond strength. Not for use with solid vinyl tiles and planks or other vinyl backed floor structures. Bonds to: Concrete, cementitious underlayments, and terrazzo. Also suitable for installation over wood substrates, existing well-bonded noncushioned vinyl tile and sheet flooring, and existing cutback adhesive. Fill all cracks, holes, and low spots with a polyumer modified cementitious patching or leveling compound and allow to fully cure prior to applying adhesive. VOC contect: 1 g/L; calculated and reported, SCAQMD 1168. 10 year limited warranty. U-notch 1/32″ D. x 1/16″ W. x 5/64″ A 250 to 300 sq. ft. per gallon. (1000 to 1200 sq. ft. per 4 gallon).