Bostik Freeflo Waterproofer & Retarder waterproofs is a liquid admixture which waterproofs, retards and plasticises cement-based mixes.

It provides protection against driving rain and damp conditions and extends the mix setting time to allow larger areas to be worked in a single application. It also improves the workability of the mortar. It has been specifically designed for use in pebble dashing & rendering and general above ground waterproofing work.