100% acrylic adhesive and base coat that is field-mixed with Type I or Type II Portland cement. Noted for its water resistant properties. To adhere expanded polystyrene insulation board to the following acceptable substrates: Senershield -R/-RS/-VB; expanded polystyrene insulation board (EPS); cement boards conforming with ASTM C1325 (Type A - exterior) including PermaBase Cement Board; poured concrete/unit masonry; ASTM C1177 type sheathings, including DensGlass or DensElement exterior sheathing (sheathing only), eXP sheathing, GlasRoc sheathing, Securock glass-mat sheathing, Weather Defense Platinum sheathing, GreenGlass sheathing; gypsum sheathing (ASTM C79/C1396); Exposure 1* or exterior plywood* (Grade C/D or better), Exposure 1 OSB* *Note: Not for use directly over wood-based sheathing, Senershield-R/-RS/-VB required over wood sheathing. For Senergy reinforcing mesh embedment as part of Senergy wall systems and as a skim coat over masonry and concrete above grade substrates.