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