Are you dealing with chipping or peeling concrete? This is a common problem caused by freeze-thaw cycles, de-icing salts, poor finishing techniques, improper curing, and poor concrete mix. In most cases, the defect does not affect the life of the slab if left untreated. But if you ignore the flaking, it eventually spreads, compromising the integrity of the surface until it can't be repaired, leaving no recourse other than to tear it off and start over. Fortunately, there are several ways to fix peeling concrete and prevent further damage.
First, determine how serious the problem is. If the chips penetrate less than a third of the depth of the concrete, a patch or repair can correct the problems. However, if there are deeper chips or pits, it may be better to completely remove the concrete and pour a new foundation. Another option is to use a concrete resurfacing system.
This is best for large areas with extensive peeling and will rejuvenate the concrete to a like new look. The facing material is simply spread over the existing and chipped concrete surface to create a fresh and flawless finish. If you have chipping on the wall of a basement or other vertical concrete surface, the solution can be a bit complicated. To fix a concrete wall that is chipping, you must first cut the concrete around the chipped area.
One technique that can prevent concrete from flaking is to apply a good water sealant to the finished surface to prevent water from entering the concrete. Weakened concrete is more susceptible to cracks and crumbling, and vertical structures, such as walls or columns, can completely collapse if peeling becomes severe. In recent years, complaints of chipping (flaking) of exterior concrete surfaces have been increasing. Descaling occurs in the outer slabs when water trapped in the concrete goes through multiple freezes and thaws. All concrete can develop cracks and flaking is inevitable, especially in colder climates and as concrete ages.
Another key factor to consider is concrete mixing, as excess water content can also lead to chipping. If you want to fix peeling concrete and prevent further damage, there are several options available. You can have your concrete re-coated with an overlay or use a resurfacing system for large areas with extensive peeling. You can also apply a good water sealant to finished surfaces to prevent water from entering the concrete.