Before you take on the task of painting a concrete wall, inspect the wall for cracks and holes. Even though concrete is a hard, durable product, it is susceptible to damage. Repairing these unsightly holes is a simple process for most do-it-yourselfers.Taking the time to prepare your wall before painting will provide a uniform surface that will ensure a successful project.
1 Clean out the edges of the hole using a hammer and chisel. Make the hole wider at the base for better bonding of the patching material. For smaller holes use a screwdriver to scrape out the hole.
2 Scrape away loose concrete and debris with a wire brush. Clear dust from the hole with a damp rag. Dust will prevent the patching compound from adhering to the surrounding concrete.
3 Prepare concrete patching compound according to manufacturer’s instructions.
4 Spray the hole with clear water. Keeping the area damp prevents the patch from separating from the surrounding concrete.
5 Fill the hole with the compound using a pointed trowel. Press the mixture into the hole to remove any air bubbles.
6 Smooth the surface with the flat edge of the trowel. Feather the material away from the repair, making the surface match the surrounding area.
7 Spray the patch with water to keep it damp for at least 24 hours.
Items you will need
- Wire brush
- Concrete patching compound
- Spray bottle
- Pointed trowel
- Wear protective eyewear when chiseling the concrete.
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