Thompson"s WaterSeal wood stripper concentrate is specially formulated to remove the toughest oil and latex based (water based) solid stains and tinted and clear waterproofers with concentrated power for decks, fences, siding, and other exterior wood surfaces. It also restores the natural color and beauty to severly weathered and discolored wood. Removes dirt, mildew, algae, and fungus stains. Maximizes performance of waterproofers and stains. Coverage: Approximately 150 sq. ft. per gallon depending on the condition and porosity of the wood. Drying: Wait 2 to 3 days, depending on weather conditions, for the wood to dry thoroughly before applying a Thompson"s WaterSeal waterproofer or stain. Clean up: Rinse equipment and brushes thoroughly with soap and water. Gallon.