| Patching Cracks


He materials and methods you should use for repairing cracks in concrete depend on the location and size of the crack For small cracks (less than one half inch wide), you can use concrete repair caulk for a quick aesthetic fix. Sanded aciylic repair caulks do a good job of matching the color and texture of concrete and stucco surfaces. I argerwacks require concrete repair materials that are fast-setting and high-strength polymer modified compounds that significantly increase the bonding properties and long-term durability’ of the concrete repair. Cracks that are a result of continual slab movement often cannot be repaired with a rigid concrete repair material. These cracks should be repaired with flexible polyurethane sealants that will elongate with the movement of the flexible concrete crack

Quick-setting cement Aciylic fortifier Hydraulic wraterstop Vinyl concrete patcher and sand mix Polyurethane sealant

Concrete repair caulk can be forced into small cracks to keep them from expanding. Smooth the caulk after application.

| Recommended Crack Preparation




The best way to repair cracks in concrete is to enlarge the crack first by chiseling a keyway along the crack path with a cold chisel. The best holding power for the new patch material is achieved if you chisel in a dovetail shape. A square keyway will also work. A V-shaped keyway will ultimately lead to failure of the repair.

Updated: 25.05.2013 — 11:56
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