OWATROL E-B MIX-IN BONDING PRIMER 2.5L E-B is a high penetrating, stir-in paint additive for use in water-based masonry or interior paints. It will help alleviate peeling problems on all porous surfaces. Owatrol 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, therefore, eliminates the need for primer. Owatrol E-B provides a bonding primer, stirs in easily, and does not alter the original colour of the paint. It offers a time-saving benefit by eliminating the need to separately prime.