Patching Concrete Cracks In A Wall

10d finishing nails partway into the crack spaced 12 in.

Patching concrete cracks in a wall.

Before you start to repair the crack use any combination of a wire brush vacuum or power washer to remove any oil dirt or debris from the concrete wall surface and from inside the crack. Dampen the area around the crack and then trowel on the mix. Tubes of liquid concrete repair lcr a viscous epoxy that comes in a caulk type cartridge and seven plastic injection ports that deliver the lcr deep into the crack. Fill it with a caulk suitable for use on concrete.

Concrete wall crack repair in 8 steps step 1. Do this by enlarging the crack using a concrete chisel and a hammer. The crack must be prepared so that the sealant will adhere to the crack surfaces. Step 1 widen the crack using a chisel and hammer to a minimum of inch and break away any deteriorating concrete the edges of the crack should be vertical or beveled in an inverted v.

Repairing a foundation crack of this nature is similar to repairing other non structural cracks. Each kit contains a two part epoxy crack sealer two 10 oz. The only way to repair foundation wall cracks successfully is by the injection process. Injecting a typical wall crack with an epoxy or urethane resin is done under pressure pushing the material from the inside all the way to the outside.

It covers cracks up to 1 2 inch wide. There s enough material in each kit to repair a 1 16 in wide x 8 in deep x 8 ft long crack. First scrub the crack clean of any loose concrete paint or old filler using a wire brush. Fill the crack with patching mix also know as vinyl concrete patching mix is made from vinyl portland cement and sand.

The injection process fills the crack from top to bottom from inside to outside. Quikrete concrete repair or quikrete self leveling polyurethane sealant may be used.