Owatrol E-B is a water based mix in bonding primer and first coat of paint or varnish in one. High penetrating, stir-in paint additive for use in water based masonry or interior paints. E-B helps alleviate peeling problems on porous surfaces, E-B is especially suitable for unstable, chalky and powdery surfaces, crumbling brickwork or render. E-B acts as a stabiliser, penetrating deep into the surface to firmly bond the first coat of paint to the substrate. This eliminates any need for a separate primer. Owatrol E-B provides a bonding primer coat with paint, stirs in to paint easily, and does not alter the colour of the paint. It offers a significant time saving benefit by eliminating the need for a separate primer.