Removal of Efflorescence

Removal techniques for efflorescence
Most efflorescence will naturally disappear over time, it can sometimes take years but eventually it will disappear on its own. However its removal can be accelerated by brushing with a stiff hard-wire dry brush. The use of a dust pan or vacuum cleaner to collect the salts after brushing is recommended to collect the efflorescence saltsas this will prevent salts from re-entering the brickwork or any porous paving materials below.
After brushing and cleaning up, an absorbent cloth (wrung out until damp only) can be used to pick up any residue. Frequent rinsing of the cloth in fresh
water is advisable. Rinsing brickwork with water will only cause the salt to be reabsorbed into the bricks and reappear when dry.