Patching Exterior Concrete Walls

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.

Patching exterior concrete walls.

How to patch an exterior concrete wall step 1. Things needed screwdriver putty knife wire brush wet dry vacuum spray bottle filled with water hydraulic cement clean mixing container trowel optional. If you are using concrete to patch the crack apply masonry adhesive or some type of bonding agent to the inner surface of the crack. Then trowel the concrete into the crack until it is completely filled.

Using either a screwdriver or hammer or a combination of both chip off any loose concrete paint or old filler. Paint the concrete bonding liquid along the length of the crack. 10d finishing nails partway into the crack spaced 12 in. Mix the two part epoxy.

Use a nail to align injection points. Wedge the chisel into the top of the crack in the concrete wall. Brush out the concrete chippings with a wire brush. The only way to repair foundation wall cracks successfully is by the injection process.

Don t leave a depression along the surface of the patch.