What to Do With Peeling Cement?

Sealing

• Unsealed concrete or improperly sealed concrete may begin to flake or peel over time. Cold weather may cause freezing and thawing on the surface, allowing the very top of the concrete to begin to disintegrate. Fix this issue with a thick layer of epoxy-based sealant. Remove all flaking with a wire brush before beginning the project, and ensure that the area is clean and free from debris, dirt, grease and oil stains. If the concrete was improperly mixed prior to pouring, the concrete may not be porous enough to accept the sealant. Apply two thick coats of sealant in this case, to prolong the life of the concrete.

Patching

• For small areas of peeling, patching may be the solution. When small areas peel, the problem may be surface damage. Chemical spills or cleaning may remove the sealant from concrete, leaving it vulnerable. For these small spots, mix or use a prepared concrete patching system. The patching is typically applied with a small trowel. Smooth the edges of the patching level with the old concrete. Spot sealing is necessary to prevent peeling from reoccurring. It is wise to seal the entire concrete area at this time to prevent more small areas from appearing.

Resurfacing

• If sealing does not solve the issue of peeling or the area is too large to patch, resurfacing is an option. Much like the initial pouring of the concrete, resurfacing involves covering the entire area. It does not typically require framing. Pour fast-drying concrete over the existing layer, and spread it with a shovel. Square up the edges with the back side of the shovel to prevent overspill. Complete the project with a push broom to smooth the top. Sealing is necessary after the new coat dries. If the concrete was mixed improperly for the initial pouring, this is sometimes the best option to prevent peeling.

Replacement

• The last resort for peeling concrete is replacement. Poorly mixed or weatherbeaten concrete may be beyond repair if left untreated for a long period. At this point, replacement is the solution. For a small concrete patio or short sidewalk, this may be preferable to resurfacing. Break up the concrete completely, and start over. For large areas, partial replacement may be preferable. With a concrete cutter, remove the peeling areas. Pour a new layer of concrete, and smooth it to match the existing layer. For best results, hire a professional to cut out the damaged area.