repairing concrete

Basic Guidelines on Concrete Repair

Concrete is a widely-used construction material due to its durability, strength, and versatility. However, over time, concrete surfaces may become damaged due to various reasons, such as wear and tear, weather conditions, or accidents. Concrete repair is an effective way to restore the functionality and appearance of damaged concrete surfaces. In this blog, we will provide you with some guidelines to help you achieve the best results when repairing concrete.

Clear the Area

Before repairing concrete, it is essential to clear the area of any debris, dirt, or loose material. This will ensure that the repair material adheres properly to the surface, and the repair is long-lasting. You can use a broom, vacuum cleaner, or pressure washer to clean the surface. This may involve getting rid of excess debris from your garage, removing debris from sidewalks, roads, and parking lots, or moving it to a different area. Before commencing the repair process, ensure that all debris, including tar paper, old bricks, or anything that may pose a safety hazard, is cleared from the area. If necessary, it’s safer to seek professional assistance for this initial step.

Assess the Damage

The next step is to assess the extent of the damage. Minor cracks or chips can be repaired using simple techniques, while major structural damage may require professional intervention. It is best to consult a professional if you are unsure about the severity of the damage.

Choose the Right Repair Material

Choosing the right repair material is crucial to achieving the best results. The type of material you choose will depend on the type of damage and the location of the repair. There are various repair materials available in the market, such as concrete resurfacer, patching compounds, epoxy, and polyurethane.

Prepare the Surface

To ensure proper adhesion of the repair material, it is important to prepare the surface. This involves removing loose material, cleaning the surface thoroughly, and roughening the surface using a chisel, wire brush, or grinder. For larger repairs, it may be necessary to cut the damaged section using a saw.

Apply the Repair Material

Once the surface is prepared, you can apply the repair material. Follow the instructions provided by the manufacturer carefully, and use the recommended tools and equipment. It is important to apply the material evenly and ensure that there are no air pockets or voids.

Cure the Repair

After applying the repair material, it is important to allow it to cure properly. This involves keeping the surface moist and covered for a specific period, depending on the type of repair material used. This will ensure that the repair material sets properly and provides long-lasting results.

Various Methods

For smaller cracks in concrete walls or floors, it’s recommended to apply a second layer of concrete repair caulk. Several brands are available, and kits that include concrete crack sealant and caulk are also available. The sealant helps make the crack smaller, making it easier to repair.

For larger cracks, such as those on walkways or around porches or decks, you’ll need a denser variety of Mapei Plankton X. This product can be purchased in either loose form or a one-cup or two-cup mortar mix. If you use the dry version, add a couple of drops of water to the mixture. If you want to make a powder, add about three tablespoons of dry ingredients before pouring it into molds. When applying Mapei Plankton X to a repaired area, work from the outside inward. Begin by applying a generous amount of concrete repair caulk to the affected area, then smooth out any bubbles or weakened bonds. Gradually work into the crack until no bubbles are visible, then apply coarse aggregate. Finally, smooth out the finished surface with fine-grit sandpaper to prepare it for its final coating.

When repairing cracks and other weakened areas using mastic, it’s essential to use the right formulation. The simplest way to determine if your mix is suitable for concrete repairs is to let it dry for a day or two. If the mix seems to have slowed down or doesn’t dry quickly, it’s probably a poor formulation. A faster drying time is necessary because the faster the concrete matting dries, the lower the bond strength of the repaired area. Bond strength is critical in concrete repairs because cracked areas can quickly become weak and susceptible to further damage if the repairing process is not done correctly. The ideal dry time for mastic is less than 24 hours.

One popular concrete repair technique involves repairing damaged or broken corners using gravel fill. This is typically the first step when repairing damaged or broken sections of a building. Never drive gravel into a crack or damaged space. Instead, place it at the base of a damaged slab. Ensure that the gravel fill you place isn’t draining away from where it’s supposed to be.

Another common technique for repairing a damaged slab is to use steel reinforcement. In this case, reinforce the damaged section using rebar and then repair the entire building section using steel ties. Remember that this technique is only effective when the damage is isolated and does not affect any other parts of the structure. For instance, repairing a single damaged stair with steel ties won’t be effective if you have an entire staircase with deteriorating steps.


Concrete repair is an effective way to restore the functionality and appearance of damaged concrete surfaces. By following the guidelines outlined above, you can achieve the best results when repairing concrete. Remember to choose the right repair material, prepare the surface properly, and allow the repair to cure properly. If you are unsure about the severity of the damage or how to proceed with the repair, it is always best to consult a professional.

If you’re looking for a company to fix your concrete, call us for a free quote today at (803) 875-9869.