Fixing Holes In Concrete Walls

Kudzu9 12 years ago.

Fixing holes in concrete walls.

Just before filling each hole with the expanding concrete repair product use an old spray bottle and spritz the hole with a spray. Spray the hole out with water using a spray nozzle attached to a garden hose. If this is a retaining wall you need to fix the problem ont he other side of the wall first. For that size vertical hole you may need to brace a board over the hole to hold in the patch until it dries.

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 aim is to make the wall look better a smooth surface is also easier to paint. Mix together in a bucket one part portland cement three parts sand and. 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.

You want the concrete surface in each hole to be perfectly clean. 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. Set the spray nozzle to its highest pressure. Clean the hole with a stiff fiber or wire brush.

Or rather one very large thing. Patching such holes is a necessary part of keeping your concrete foundation wall in good repair. 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. A huge hole in the cement wall that separates our garage from our basement.

If your home has concrete you may notice holes forming due to strong weather or rodents. 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.