How to Patch Concrete Floors

Since concrete is a very popular material for flooring, patching concrete floors is something that you can learn how to do if you want to save money in the future. The process is fairly straightforward, but the most important thing is to get on to the problem quickly. Damage in a concrete floor can quickly get worse if it is left unattended over a long period of time. Concrete floors are often left exposed, but most of the time, they act as a sub floor, having vinyl, hardwood or tile laid over them. Most repairs on a concrete floor can be completed over a weekend by anyone who has some basic experience of DIY.

Tools and Materials Needed:

  • Hammer
  • Chisel
  • Wire brush
  • Mortar mix
  • Trowel
  • Sealant with gun

Step 1 – Remove Loose Concrete

Before you can carry out any repairs, you are going to need to remove any loose fragments of concrete. These cannot be salvaged, and need to be chipped away and completely removed. Use the hammer and chisel to break away any loose concrete and dispose of it appropriately. Make sure that you do a thorough job, as repairing a surface which still has bits of loose concrete will be completely counterproductive.

Step 2 – Clean Surface

Sweep away any dirt and dust which is built up in the damaged area. You need to have a solid surface to repair. This will allow the new mortar to adhere easily, providing much better results. If you still have fragments of concrete or dirt in the area to be repaired, the concrete mortar mix will not adhere properly.

Step 3 – Mix Mortar

Mix the replacement mortar as directed to by the manufacturer’s instructions. This will need to be mixed with water at the correct ratio. Mix it in a bucket and make sure that you mix enough for the first stage of the job. You can mix it using a sturdy stirring stick, slowly adding water until the mixture has the consistency of a thick paste. When it is like this, it is ready to apply.

Step 4 – Apply Mortar

Apply the new mortar to the holes and cracks in the concrete which you need to repair. To begin with, and a thin layer of concrete mix to each hole with a trowel. Allow this layer an hour to dry. Continue with the process when it is dry and apply each layer every hour until the surface is level with the rest of the concrete floor.

Step 5 – Seal Repairs

Finally, when the concrete mortar has dried and it is completely level with the surface, you should seal it to protect it. This will get rid of any remaining minor cracks. You can purchase special mortar designed for this sort of job, which usually comes in the form of a tube of latex concrete sealant. Apply this to the repaired areas and be sure to remove any excess before it has a chance to set.