Nano Acrylic sealant forms a tough, exible, resilient bond to all building material surfaces. It has excellent resistance to water, weathering and moisture vapor. Nano Acrylic sealant cures to produce a exible seal that is non-yellowing and mildew resistance. Nano Acrylic sealant is designed for both interior and exterior use. Can be painted over with most type of paints. A minimum of 2 hours dry time is required before painting depends on the depth and gap size. Once fully cured oil base paints can be applied. Allow extra dry time during periods of high humidity or cool temperature.