Repair Pitted Concrete Wall

The only way to repair foundation wall cracks successfully is by the injection process.

Repair pitted concrete wall.

If the damage is greater than 1 3 of the depth steel bars may need to be installed and a full depth restoration may be required. Saturate the concrete with water and then use a broom to push out any puddles from the pitted areas or low spots. 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. Most repairs that fail do so because the patch is too thin at the edges and breaks off.

The reason people hold off their fancy garage floor projects isn t because of some concrete spalling or pitting. The wall needs to be moist so that the old concrete won t leach moisture out of the mortar that you apply and cause the repair to fail. Mix a batch of concrete in a large bucket. In a bucket tub or wheelbarrow combine the resurfacer with water in the ratio recommended by the manufacturer.

Mix exterior grade cement based concrete pitting and spalling resurfacer with water in a wheelbarrow or large bucket depending on the size of the porch. Spalling is the mason s term for concrete that s pitted or chipped as in photo 1. The key to a lasting repair is to make a saw cut around the perimeter of the damaged area cutting back to solid concrete. When the spalling damage is shallower than 1 3 of the concrete s thickness the concrete usually can receive a surface repair.

Apply small amounts of water over a short period until it has absorbed water deep into the wall. Let s talk about how to repair pitted concrete garage floor. Use a permeable concrete that allows the concrete to breathe and prevent further spalling from trapped water. Mix and apply the resurfacer.

The concrete should be mixed thickly enough to not sag when placed onto the vertical surface of the wall. The truth is repairing your garage floor isn t very difficult and you only need some. The cut should be at least 3 8 in. After chiseling clean the area as described for smaller pits.

Follow the resurfacer manufacturer s. The concrete should be damp when you apply the resurfacer but not wet to the touch. You want the bottom of the holes to be slightly wider than the top. The injection process fills the crack from top to bottom from inside to outside.

Prepare larger pits and cracks by using a chisel to chip away at the bottom of the pits. Then using your drill mounted paddle attachment. Use a drill with a paddle bit to mix the concrete.