Repairing Large Holes In Concrete Walls

Or rather one very large thing.

Repairing large holes in concrete walls.

For that size vertical hole you may need to brace a board over the hole to hold in the patch until it dries. Holes this large make that type of fix impractical. If this is just a wall above ground on both sides you can mix up some concrete patch and fill the hole back in. Surecrete s solid cement filler is a single component just add water cement based chemical patching compound system providing a patch that goes from 1 8 0 32 cm and up.

The injection process fills the crack from top to bottom from inside to outside. Deep patch is solid concrete repair product for patching large holes in concrete surfaces. Tap the chisel with a hammer and chip downward to the back wall of the block creating a larger. Lay the chisel on the edge of the hole and point it downward at a 45 degree angle into the block.

If your aim is to make the wall look better a smooth surface is also easier to paint. Concrete is is a lot coarser and includes large rocks and gravel. If this is a retaining wall you need to fix the problem ont he other side of the wall first. Patching such holes is a necessary part of keeping your concrete foundation wall in good repair.

Concrete mix is similar to mortar mix the stuff i used to pour the floor of my shower but it is made up of sand and cement only. To permanently patch the crack we used an epoxy injection system from polygem called the liquid concrete repair kit 60. 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. You can use mortar mix to repair masonry but it is about 4 5x as expensive and the finish isn t that much nicer.

A huge hole in the cement wall that separates our garage from our basement. 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.