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Hey’di Antisulphate is used to treat damp, salt affected masonry. It is an essential element of the Hey’di K11 basement tanking system and is also useful in the treatment of above ground structures such as chimney breasts and in the treatment of flood damaged properties. It chemically reacts with salts in masonry, converting soluble salts into water insoluble reaction products, preventing their movement in to newly applied tanking and renders.
