Seal out water, air, and moisture with Flex Seal Liquid in Gray. This thick, rubberized coating brushes or rolls on and dries to a watertight, flexible barrier that blends with concrete and masonry surfaces. Once cured, it withstands temperatures from -80 to 350 degrees F and resists mildew, chemicals, and UV damage.

• Gray formula blends with concrete, masonry, and metal surfaces
• Covers up to 18.75 sq ft per 16 oz container
• Apply with brush or roller - 24-48 hours dry time per coat
• Works on concrete, wood, metal, glass, tile, fabric, and more
• Temperature range: -80 to 350 degrees F after curing
• Zero VOC, non-flammable, non-hazardous formula
• Ideal for roofs, basements, foundations, RVs, and pools