For the protection of concrete surfaces against acids the first step is to coat the surface with the negative side waterproofing KÖSTER NB 1 Grey or the faster version KÖSTER NB 1 “fast”. The acid protection itself is made with KÖSTER Silicate Mortar (also suitable for damp substrates) or KÖSTER PSM (suitable for dry substrates and easy to apply).
Where acid resistant tiles are to be applied KÖSTER Silicate adhesive can be used as a tile adhesive and KÖSTER Silicate Mortar is used for jointing the tiles.
Always adhere to the specifications in the respective Technical Guidelines.