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.
Patching exterior concrete walls.
The only way to repair foundation wall cracks successfully is by the injection process.
Hammer it gently with the rubber mallet to.
Use a nail to align injection points.
Paint the concrete bonding liquid along the length of the crack.
Things needed screwdriver putty knife wire brush wet dry vacuum spray bottle filled with water hydraulic cement clean mixing container trowel optional.
First scrub the crack clean of any loose concrete paint or old filler using a wire brush.
Brush out the concrete chippings with a wire brush.
Don t leave a depression along the surface of the patch.
Wedge the chisel into the top of the crack in the concrete wall.
10d finishing nails partway into the crack spaced 12 in.
Concrete wall crack repair in 8 steps step 1.
How to patch an exterior concrete wall step 1.
Then trowel the concrete into the crack until it is completely filled.