For above ground use on untreated or pressure treated exterior wood surfaces. Protects against rot and decay by inhibiting mold, mildew, and other fungal attack. Repels water, resists moisture damage including warping, swelling, shrinking, and end-checking. Paintable, stainable formula extends topcoat life by inhibiting peeling and blistering. Anti-wicking property resists moisture absorption through end cuts. 100% clear, allows natural wood color to show through and gray naturally. Water-based, EPA registered formula provides easy soap and water clean up. covers approximately 250 sq ft to 300 sq. ft. per gallon.