How To Patch A Section Of Concrete Floor

Mix the concrete with water and scoop some into the hole.

How to patch a section of concrete floor.

It is primarily used for anchoring bolts in holes drilled in concrete but it also works well here. Clean the area in and around the crack with a wire brush and broom. Use a small sledgehammer and chisel to undercut the edges of the crack. Smooth the surface with a putty knife or trowel.

Photo by kenneth chen. Cover every part of the crack or hole. Anchoring cement expands as it hardens. Brush a concrete bonding agent into the crack or hole.

Keep the area moist until the patch cures. While the surface is damp you can use the top n bond concrete patcher to repair the low spots. If need be you can add another layer of this product after 45 minutes. Brush on a concrete bonding liquid photo by kenneth chen.

Bonding agent is a liquid that helps concrete stick better. This material can be placed from 1 2 down to a featheredge in one layer. Use a hammer and a cold chisel to level the bottom of the hole and undercut its sides slightly so the patch can t pop loose. Wash the area with a stream of water.

Undercutting the crack makes it wider at the base than at the surface providing a mechanical method of keying the patch in place for a more secure and permanent repair.