Filling Large Holes In Concrete Walls

If that isn t an option fill the hole with water.

Filling large holes in concrete walls.

I m assuming your wall is made of concrete blocks also called cinder or cement blocks. How to fill large hole in an internal wall using a core which was cut out from a thermolite block using a core drill. Unlike repairing drywall filling the holes requires more than just mashing the patching product into the holes. For that size vertical hole you may need to brace a board over the hole to hold in the patch until it dries.

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. If this is just a wall above ground on both sides you can mix up some concrete patch and fill the hole back in. In most cases you can use a brush or vacuum to get most of the debris.

Pop outs are small conical shape chunks of concrete that have popped out and left a hole behind. You ll want to fill so the foam is more or less even with the inside of the block. I might fill most of the void with spray foam. Removing the debris from a large hole is often a little challenging.

The cracks might indicate a more serious structural problem. The hole in this wall was particularly. Clean the hole with a stiff fiber or wire brush. Spray the hole with water if it s more than 1 in 2 5 cm deep.

If your aim is to make the wall look better a smooth surface is also easier to paint. The stuff expands pretty much so start at about a 50 fill and see where that gets you. After hearing that i seriously considered just gluing a piece of plywood over it and calling it a day. Several masonry patching products such as hydraulic cement do an adequate job of filling cracks in concrete.

If this is a retaining wall you need to fix the problem ont he other side of the wall first. If you notice large recurring cracks or bulging walls at your house don t try to fix these conditions yourself.