Stick a Tile Plaster Aid has versatile uses within the building industry and assists with bonding of gypsum plaster and cement, sand plaster to friable, chalky, powdery and smooth surfaces. It can be used as a keying agent over smooth nonporous surfaces, as a gypsum and cement additive to assist with adhesion and water resistance. Application: When used as a primer or bonding agent. Stick a Tile Plaster Aid should be used prior to skimming, plastering, and laying screed to assist regenerating of friable, chalky porous surfaces, to improve adhesion, thereby enhancing the performance of the screed, plaster system. When using as keying agent. Stick a Tile Plaster Aid provides excellent keying proper?es to smooth nonporous surfaces, concrete, friable and chalky surfaces. Available in 5l.