How To Fill A Big Hole In Concrete Wall

Apply a coat of concrete adhesive to the hole.

How to fill a big hole in concrete wall.

You ll want to fill so the foam is more or less even with the inside of the block. Wet the surface and apply a concrete bonding agent apply the bonding agent inside the hole with a paintbrush. Repairing the holes in a concrete wall involves undercutting the hole. Then use one of the concrete patching mix like the one from quikrete.

Use the corner of a trowel or your finger to pack the compound into the hole making sure it is completely full. Wait for about 10 to 15 minutes or until it gets sticky. Fill the hole with the patching compound. Spread a layer of patch mixture over the.

The stuff expands pretty much so start at about a 50 fill and see where that gets you. An ideal patch to use for both purposes is hydraulic cement which expands to fill cracks and holes as it dries. Before attempting to fill a hole clear out loose concrete and other debris. After hearing that i seriously considered just gluing a piece of plywood over it and calling it a day.

Concrete takes time to cure so keep the patch moist for several days for a stronger fix. Mix it up to the consistency of peanut butter and fill what s left. Apply at any depth without n. Watco concrex vertical is specially formulated to repair damaged concrete pillars sills lintels beams render and stonework.

Then mix the mortar fill in the hole and level it to blend it in with the surrounding structure. Use a cold chisel and hammer to make the space wider underneath the hole.