Efflock is ideal as an additive for render. Efflock is pictured here, specified by the builder in a bathroom renovation, as an additional barrier in the water proofing system. Ian the renderer used his preferred mix using 4 Sydney sand, 1 cement, with plasticisers of Bycol and renderer's clay. Even with renderer's clay in the mix, Efflock works.
Ian was pleased with the workability of the mix, and the simplicity of adding just 1% Efflock to the gauging water to create water repellent walls!