Liquid Rubber Color Waterproof Sealant/Coating (1 Gallon, White) - Environmentally Friendly - Water Based - No Solvents, VOC's or Harmful Odors - Easy to Apply - No Mixing - TOP SELLER USE FOR - Flat Roofs, Metal Roofs, sloped roofs, planter boxes, foundations, ponds, sheds, basements, metal, wood, concrete and more EASY TO APPLY - Just like Painting! Apply by brush, roller or high quality paint sprayer. Use heavy coats to build up the waterproof membrane. You can close the container and use later if you have left over material ENVIRONMENTALLY FRIENDLY - Liquid Rubber Color Waterproof Sealant/Coating is water based, containing no solvents, VOC's or harmful odors. Safe for humans and pets alike, can be used indoors and outdoors with no special breathing apparatus COVERAGE - Flat/Ponding Surface - 50 sq ft/G per coat. Apply 3-4 heavy coats to achieve a 60-80 mil. (1.5-2.0mm) membrane. Vertical Surfaces - 100 sq ft/G per coat. Apply 2-3 heavy coats to achieve a 40-60 mil. (1.0-1.5mm) membrane APPLICATION - Do not apply in wet conditions or within 24 hours of rain. Apply to a dry surface, free of dirt, loose flaky paint and coatings, oil, grease, coal tar or other contaminants. Typically cures within 24-48 hrs!