Fixing Holes In Concrete Walls

If this is a retaining wall you need to fix the problem ont he other side of the wall first.

Fixing holes in concrete walls. 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. Patching such holes is a necessary part of keeping your concrete foundation wall in good repair. Clean the hole with a stiff fiber or wire brush. Just before filling each hole with the expanding concrete repair product use an old spray bottle and spritz the hole with a spray.

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. 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. Or rather one very large thing. If your aim is to make the wall look better a smooth surface is also easier to paint.

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. Kudzu9 12 years ago. You want the concrete surface in each hole to be perfectly clean. Holes this large make that type of fix impractical.

For that size vertical hole you may need to brace a board over the hole to hold in the patch until it dries. A huge hole in the cement wall that separates our garage from our basement. If this is just a wall above ground on both sides you can mix up some concrete patch and fill the hole back in. Mix together in a bucket one part portland cement three parts sand and.

Set the spray nozzle to its highest pressure. Spray the hole out with water using a spray nozzle attached to a garden hose.