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Spalling Concrete Repair

Posted on - 08 June 2021 Roof Repairing Singapore by GAUSHAN CONSTRUCTION & ROOFING

Spalling concrete - most of the older buildings having this issue. Main cause of this issue is carbonation, a natural deterioration process. This causes the steel bars embedded in the ceiling slab to corrode, which in turn causes the concrete cover to crack and bulge. As the owner, you are responsible for the repair of any spalling concrete in your flat.

How to prevent spalling concrete Spalling concrete is a surface maintenance problem that occurs in reinforced concrete structures. If attended to immediately, the building’s structural integrity will not be affected.

Here’s how spalling concrete can be prevented:

Paint ceilings regularly Paint protects your ceiling and helps to prevent carbonation. Ideally, you should paint your ceiling regularly.

Seal cracks/ holes properly Check your ceiling regularly for any holes or cracks. These should be sealed immediately to prevent moisture and carbon dioxide from entering the concrete. Similarly, seal up any holes drilled into the ceiling that are no longer in use (e.g. holes left after a ceiling fixture is removed).

Ensure sufficient ventilation A humid environment will speed up carbonation. To reduce the humidity in moisture-prone areas such as the kitchen, toilet, and bathroom, open the windows, vents, or doors when the areas are not in use.

Repairing spalling concrete With regular maintenance, spalling concrete within HDB flats will usually be minor and can be easy repaired. However, if the spalling concrete is left unattended over a long period, it will spread to a bigger area and weaken the building structure.


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