Apply small amounts of water over a short period until it has absorbed water deep into the wall.
Pour concrete wall patch.
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.
Speaking of water dap has water resistance over time so that it is suitable for the humid and rainy climate as well as outdoor projects.
Use a wire brush check on amazon to brush both ends of the walls and then try a vacuum pump to suck out all debris in.
Get free shipping on qualified patch concrete repair or buy online pick up in store today in the building materials department.
Once that has been done you may want to start mixing your mortar check on amazon.
Fill a bucket with the mortar and then use a hand trowel to apply it.
Patch concrete repair concrete cement masonry the home depot store finder.
The only way to repair foundation wall cracks successfully is by the injection process.