Thompson's WaterSeal TH.042841-16 Waterproofing Stain, Acorn Brown, 1 gal, Semi-transparent | Use on decks, fences, outdoor furniture and exterior wood. Prevents water damage. Advanced polymers provide fade-resistant color. Coating resists mildew and UV damage. Applies to freshly cleaned damp or dry wood. Exceeds industry standard ASTM D-4446. Covers about 150 to 400 sq-ft/gal. Can be applied by paint pad, brush, sprayer and roller. 2 hrs dry time.