Patching Exterior Concrete Walls

How to patch an exterior concrete wall step 1.

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. Brush out the concrete chippings with a wire brush. 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. Using either a screwdriver or hammer or a combination of both chip off any loose concrete paint or old filler.

Use a nail to align injection points. Don t leave a depression along the surface of the patch. Things needed screwdriver putty knife wire brush wet dry vacuum spray bottle filled with water hydraulic cement clean mixing container trowel optional. 10d finishing nails partway into the crack spaced 12 in.

First scrub the crack clean of any loose concrete paint or old filler using a wire brush. Wedge the chisel into the top of the crack in the concrete wall. Then trowel the concrete into the crack until it is completely filled. Hammer it gently with the rubber mallet to.

The only way to repair foundation wall cracks successfully is by the injection process.