Use a nail to align injection points.
Patching exterior concrete walls.
How to patch an exterior concrete wall step 1.
Brush out the concrete chippings with a wire brush.
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.
Don t leave a depression along the surface of the patch.
Then trowel the concrete into the crack until it is completely filled.
Wedge the chisel into the top of the crack in the concrete wall.
Concrete wall crack repair in 8 steps step 1.
Mix the two part epoxy.
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.
The only way to repair foundation wall cracks successfully is by the injection process.
Hammer it gently with the rubber mallet to.
10d finishing nails partway into the crack spaced 12 in.