Le the hole or the crack dry for quite some time.
How to fix big hole in concrete wall.
Clean the hole with a stiff fiber or wire brush.
Clean the hole and surrounding area with a wire brush.
The guys at home depot had a lot of fun lamenting the fact that the hole existed to begin with and then suggested that i build a mold on one side of the wall and fill it in with a pour of concrete.
Fill the cracks and holes with concrete caulk.
Vacuum any remaining dust or debris out of the hole.
Dampen the hole and surrounding area with water using a spray bottle.
Lay the chisel on the edge of the hole and point it downward at a 45 degree angle into the.
Don goggles and a respiratory mask.
It provides much better adhesion and curing of the patch.
The only way to repair foundation wall cracks successfully is by the injection process.
Address any pop outs pop outs are small conical shape chunks of concrete that have popped out and left a hole behind.
Wet down the holes with water for best patch adhesion.
Don t skimp on cost.
If you have a wet dry vacuum this is a great place to use it.
Water may be used to make sure that all loose concrete particles are removed.
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.
After hearing that i seriously considered just gluing a piece of plywood over it and calling it a day.
If this is just a wall above ground on both sides you can mix up some concrete patch and fill the hole back in.
How to fix a large hole in a cement block 1.
Scrape out the hole with a mason s chisel while dislodging loose or crumbling block.
Mix a small portion.
If this is a retaining wall you need to fix the problem ont he other side of the wall first.
Clean out as much debris as.
Using a wire brush brush clean the cracks and the holes.