If possible make the bottom part of the hole slightly wider than the top part.
How to fix concrete wall hole.
Dampen the hole and surrounding area with water using a spray bottle.
To permanently patch the crack we used an epoxy injection system from polygem called the liquid concrete repair kit 60.
Just before filling each hole with the expanding concrete repair product use an old spray bottle and spritz the hole with a spray of clean water.
Use an epoxy injection system for basement wall crack repair we repaired a foundation wall which had an 8 ft long crack that leaked water into the basement during periods of heavy rainfall.
Use a hammer and chisel to remove loose concrete from the hole.
Apply the sticky side of the wall hole patch around the edges of the hole leaving at least a on each side of the hole.
Always wear gloves when handling cement.
Clean the hole with a stiff fiber or wire brush.
Vacuum any remaining dust or debris out of the hole.
If the hole is already greater than 1 in 2 5 cm deep don t try to make it deeper.
You want the surface of the inside of the hole to.
You can do this by holding the.
Smooth the edges of the patch around the hole.
Instead clean it out and choose an.
Don t skimp on cost.
To apply the cement i grabbed a good handful and worked it into the right shape breaking up any clumps.
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.
Wet down the holes with water for best patch adhesion.
Pop outs are small conical shape chunks of concrete that have popped out and left a hole behind.
Using a cold chisel and a 3 pound sledgehammer undercut the hole by making the pop out wider at the bottom than at the top.
It provides much better adhesion and curing of the patch.
This is important as most concrete products shrink as they cure and you want to prevent that as much as possible.
If you have a wet dry vacuum this is a great place to use it.
Clean the hole and surrounding area with a wire brush.
Mix a small portion.
The only way to repair foundation wall cracks successfully is by the injection process.