First scrub the crack clean of any loose concrete paint or old filler using a wire brush.
Patching exterior concrete walls.
The only way to repair foundation wall cracks successfully is by the injection process.
Paint the concrete bonding liquid along the length of the crack.
How to patch an exterior concrete wall step 1.
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.
Then trowel the concrete into the crack until it is completely filled.
Mix the two part epoxy.
Concrete wall crack repair in 8 steps step 1.
Don t leave a depression along the surface of the patch.
Wedge the chisel into the top of the crack in the concrete wall.
Hammer it gently with the rubber mallet to.
Using either a screwdriver or hammer or a combination of both chip off any loose concrete paint or old filler.
10d finishing nails partway into the crack spaced 12 in.
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.