Repair Pitted Concrete Wall

Use a permeable concrete that allows the concrete to breathe and prevent further spalling from trapped water.

Repair pitted concrete wall.

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. Let s talk about how to repair pitted concrete garage floor. The truth is repairing your garage floor isn t very difficult and you only need some. It s because the idea of repairing it on your own seems intimidating.

Apply small amounts of water over a short period until it has absorbed water deep into the wall. After chiseling clean the area as described for smaller pits. Use a drill with a paddle bit to mix the concrete. The reason people hold off their fancy garage floor projects isn t because of some concrete spalling or pitting.

Mix a batch of concrete in a large bucket. The only way to repair foundation wall cracks successfully is by the injection process. Saturate the concrete with water and then use a broom to push out any puddles from the pitted areas or low spots. The concrete should be mixed thickly enough to not sag when placed onto the vertical surface of the wall.

You want the bottom of the holes to be slightly wider than the top. This will ensure a long lasting repair as concrete shrinks and expands as it cures and over time. Spalling is the mason s term for concrete that s pitted or chipped as in photo 1. In a bucket tub or wheelbarrow combine the resurfacer with water in the ratio recommended by the manufacturer.

When the spalling damage is shallower than 1 3 of the concrete s thickness the concrete usually can receive a surface repair. The injection process fills the crack from top to bottom from inside to outside. Most repairs that fail do so because the patch is too thin at the edges and breaks off. 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.

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. The concrete should be damp when you apply the resurfacer but not wet to the touch. Pour the mix into a puddle on the slab and immediately spread it photo 7. Follow the resurfacer manufacturer s.

Mix and apply the resurfacer. Then using your drill mounted paddle attachment. The cut should be at least 3 8 in.