Filling Large Holes In Concrete Walls

Pop outs are small conical shape chunks of concrete that have popped out and left a hole behind.

Filling large holes in concrete walls. I might fill most of the void with spray foam. Unlike repairing drywall filling the holes requires more than just mashing the patching product into the holes. Several masonry patching products such as hydraulic cement do an adequate job of filling cracks in concrete. Concrete patch is used for repairs of holes or large cracks while a paste of portland cement and water or a concrete caulking product are suitable for smaller hairline cracks.

The hole in this wall was particularly. After hearing that i seriously considered just gluing a piece of plywood over it and calling it a day. If that isn t an option fill the hole with water. Removing the debris from a large hole is often a little challenging.

Call in a structural engineer for an in depth evaluation. You ll want to fill so the foam is more or less even with the inside of the block. 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 your aim is to make the wall look better a smooth surface is also easier to paint. If this is a retaining wall you need to fix the problem ont he other side of the wall first. In most cases you can use a brush or vacuum to get most of the debris. The guys at home depot had a lot of fun lamenting the fact that the hole existed to begin with and then suggested that i build a mold on one side of the wall and fill it in with a pour of concrete.

I m assuming your wall is made of concrete blocks also called cinder or cement blocks. For that size vertical hole you may need to brace a board over the hole to hold in the patch until it dries. The stuff expands pretty much so start at about a 50 fill and see where that gets you. If this is just a wall above ground on both sides you can mix up some concrete patch and fill the hole back in.

If you notice large recurring cracks or bulging walls at your house don t try to fix these conditions yourself. The cracks might indicate a more serious structural problem.