EXPRESS BUILDING
& PEST INSPECTIONS
Phone: 02 9580 7300
Mobile: 0417 277 724
Email
philexp@optusnet.com.au
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Building, home and unit pre-purchase inspections and reports in Sydney
Concrete cancer
Buyer beware ! Purchasing a unit in a complex with balconies affected by concrete cancer can cost you thousands. As a part owner you would be expected to pay a portion of any costs to repair or replace the affected balconies!
Concrete cancer
The familiar sight of concrete spalling due to the corrosion of
the steel reinforcing can be caused by a
number of factors.
These include:
- Poor quality concrete (incorrect water/cement ratio, porosity,
poor compaction)
- Poor placement of rebar (too close to surface)
- Carbonation (alkalinity of concrete is reduced over time
causing steel rebar to become corroded.
- Chloride penetration of concrete in marine environments.