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Acrylic brush-applied waterproofing mastics for roofs, foundations, bathrooms and other areas in contact with water.
Under bathroom and shower tiles, liquid waterproofing must form a continuous film: one missed centimetre in a corner undoes the whole job. Blue Aqua Block shows gaps in the coat straight away, while white Water Block with 400% elongation bridges screed shrinkage cracks and also works under electric underfloor heating. Both go onto a dry base only: Aqua Block from +5 °C, Water Block from +10 °C.