Emer-Proof Primer Non Porous is a primer specifically designed with adhesion enhancing properties for use on metallic, smooth, dense and non porous surfaces. Emer-Proof Primer Non Porous is a safe alternative to hazardous solvent based primers and etching products, to enable the adhesion of a wide range of paints, coatings, membranes and adhesives over non-absorbent surfaces. Emer-Proof Primer Non Porous is suitable for all Emer-Proof water based membrane systems for non porous substrates.