IsoCoat URN 7019 is a hand-mixed coating or patch for application to styrofoam. It is compatible with both polyurea and polyurethane coatings. Its low viscosity makes it quite easy to hand mix then pour or trowel into place. With a 15-17 minute working time; there is ample time to patch large or multiple areas. The viscosity of the mixed product allows patching on the sides and bottom of the application site.