... waterproof coating 1. damp substrate 2.environmentaly friendly.high elastic. 3.good film forming acrylic polymer waterproof coating1.Applicable for ... brush ,roller ,spray, scratch .etc to coat. 4.Has a good anti-aging, extensibility, flexibility, adhesion and film-forming.5 ... .Waterproof layer is a closed system, the overall water-proof effect is good, and ...