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Acid Etching and Neutralizing

The acid washing of concrete is a requirement after the concrete has cured sufficiently, in order to remove surface efflorescence and to open the pores before sealing. This will help the sealer to penetrate and result in a superior bond between the sealer and the surface.

Please refer to our Acid Washing guide below for further information.

A mixture of Permacolour Neutralizer at one sachet per 20 litres of water is then applied and also rinsed off thoroughly.

Note Acid washing should be done between 2 weeks and no later than 1 month after the concrete is laid.
 
 
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