How to repair a minor crack in concrete – How to fill a gap in concrete – How to repair a small hole in concrete

How to repair a minor crack in concrete:

1. Clean the area so that it is free of debris. You can sweep it out, or use a wire brush or vacuum it out with a shop vac. It must be dry before you move to step 2.

2. Apply caulk into crack. Use an ample amount of caulk to fill the crack to just above the surrounding surface.

3. Take a trowel and smooth out the caulk so that it is level with the surrounding area. If the crack is small enough, you can use your finger to smooth out the caulk (make sure to wear a rubber glove).

4. Let dry for at least two hours.

How to fill a gap in concrete:

1. Make sure the area is dry and clear of debris.

2. Take caulking and apply it to the entire length of the gap. Use generously

3. You can even out the caulking with a glove-covered finger, a trowel, or the back of a spoon rubbed with oil you can use any oil—baby vegetable, olive, even suntan oil.

4. let dry for at least 4 hours.

How to repair a small hole in concrete:

1. Break away any loose or unstable material. The easiest way to do this is with a small chisel and hammer.

2. Clean up any excess debris. If you can use a shop vac, it’s best. Make sure area is dry

3. Use a paintbrush to apply the bonding adhesive to the entire area that needs to be patched.

4. Fill the area with the reinforced patching compound, only adding about ‘4 inch at a time.

5. Wait about 30 minutes for the layer to dry.

6. Apply additional layers until you have filled the hole to just above the surrounding surface area.

7. Use a trowel to smooth out the area being repaired, until it is level with the surrounding area, its okay to let the mixture feather over the surrounding area to get a good, level base.

8. Allow the mixture to cure (or dry). Although it will take months to completely cure, you will begin to see hardening within the first few minutes, and it will be hard enough to walk on within 2 hours.



If a painted surface is in poor condition and the paint is flaking, you will have to strip it off before repainting. Use a wide scraper to remove the paint. If the paint is stubborn, apply a chemical stripper. When the surface is bare, smooth it with medium-grain sandpaper wrapped around a cork block, lithe surface has been painted with tempera; seal it with a stabilizing solution after you have sanded it down.


It is worth filling even small cracks and holes for a professional result. You can buy filler as ready-mixed paste or as a powder that must be mixed before use. Always check manufacturers’ instructions before preparing the paste. The average drying time is 30 minutes. Fill large holes with several layers of filler if necessary. After filling, sand down the surface. Filler can be difficult to remove from equipment, so if you are mixing your own, line the container with a plastic bag to avoid a messy cleaning job afterward.

1. Stat by brushing away loose debris with a small decorating brush.

2. Wet the hole with a small, damp brush to ensure that the filler stays inside the hole.

3. Press the filler into hole with a putty knife. Allow filler to dry between layers. Wipe off excess.

4. Smooth with the wet blade of a putty knife. Once dry, sand with fine-grain sandpaper.