Home South Africa|April 2020
1 Inspect the wall: run your hand over it to feel if there are any loose cement particles. If there are some, scrub the wall quite hard to remove them. Tap off any coarse cement lumps carefully with a builder’s trowel.
2 Mix 1 part spirits of salts to 10 parts water in a clean bucket. Dip a sponge in it and wash the wall lightly.
This preparation ensures that the wall is clean for the best results. Wait about an hour or 2 for the wall to dry.
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