Why this matters for Melbourne properties
This Brick Cleaning article is written for Melbourne owners and managers who need more than a quick blast. Brick Cleaning jobs in our city require a surface diagnosis before any cleaning starts.
In Melbourne, everything from growth corridor new-build mortar smear to inner-suburb heritage brick has its own cleaning risk profile. The right method, chemistry and pressure keep the surface safe and the result lasting.
Mortar smear is a building defect
Mortar smear is residue left by the bricklayer — sand, cement and lime smeared across the face during construction. It is dense, often patchy, and resists water alone. Acid wash with the right dilution lifts it; water blasting alone usually does not.
Efflorescence is salt migrating out
Efflorescence is soluble salt drawn out of mortar joints by moisture. It often appears in patches after wet weather and can return seasonally. Brushing and a controlled neutralising rinse work better than aggressive acid for fresh blooms.
Wrong diagnosis = wrong chemistry
Use acid on efflorescence too early and you fix the surface but lock more salt in the wall. Use water alone on mortar smear and you waste a day. Always test a discreet patch.