Fixing Holes In Concrete Walls

Mix together in a bucket one part portland cement three parts sand and.

Fixing holes in concrete walls.

A huge hole in the cement wall that separates our garage from our basement. Kudzu9 12 years ago. Most holes can be fixed with a quality mortar mix although you should use one with a crushed stone aggregate to fill holes over 1 in 2 5 cm deep. Holes this large make that type of fix impractical.

You want the concrete surface in each hole to be perfectly clean. How to fix a big hole in a cement wall when a posted a little while ago about sealing and patching holes in my garage i conveniently left one small thing out of the narrative. Pop outs are small conical shape chunks of concrete that have popped out and left a hole behind. If this is a retaining wall you need to fix the problem ont he other side of the wall first.

Or rather one very large thing. If this is just a wall above ground on both sides you can mix up some concrete patch and fill the hole back in. Clean the hole with a stiff fiber or wire brush. Patching such holes is a necessary part of keeping your concrete foundation wall in good repair.

If you do have hollow cinder block walls then yes you will need to use a filler like spray foam for areas the holes go all the way into the center. If your home has concrete you may notice holes forming due to strong weather or rodents. If the holes were smaller i would use hydraulic cement which actually slightly expands as it cures with about a 3 4 minute working time. 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.

Just before filling each hole with the expanding concrete repair product use an old spray bottle and spritz the hole with a spray. Set the spray nozzle to its highest pressure.