How to Repair a Concrete Block Retaining Wall

What You'll Need
Crack Repair Cement
Concrete Glue

 Whenever you are repairing a concrete block retaining wall, there are several things that you should keep in mind. You will find that repairing cracks is something that you may end up needing to do. Typically, if there is a crack, it means that something is wrong. It could mean that there is poor soil or faulty design. Whatever the case may be, you will need to repair the crack quickly and then try to figure out what is causing it. There are a few different ways that you can fix a crack in your concrete block retaining wall. It is just a matter of what works best for you.

Step 1 – Cements

If you are looking to put a little bit of work into your repair, then you will find that there are special cements that are made that will expand as they begin to dry. Typically, these products work well enough to keep you from having to worry about fixing a crack again. However, they do require some work. You will need to chisel the exact profile of the crack in the wall. In order to do this, you will need to undercut the actual crack. It is important that you do not use a V shape whenever you are using this product as it will push itself out of the crack as it dries. 

Step 2 – Epoxies

There are special types of concrete glue out there that you will be able to use. With this glue, you can bond old concrete to new, new concrete to new or old concrete to old. There are certain epoxies that can actually weld your concrete wall back together. They are typically used by professionals or serious do it yourselfers. You will find that they typically need to be injected into cracks in your walls. 

Step 3 – Compounds

There are brush-on compounds that you will be able to use to get rid of cracks as well. There are several different types of brush-on compounds that you will have to sort through if you wish to use this method. You will find that the biggest problem with these is the fact that you will need to apply the compound to the side of your wall where there is a crack or leak. This could create a problem as you will more than likely have a lot of digging in your future. It may even be something that you are unable to do as it can be impossible to uncover one entire side of your wall. However, this works well whenever you are working with the inside of a basement wall. It is important that you follow the steps on the label closely. 

Step 4 – Preparation for Compound

It is important that you are able to get the surface clean and moist in preparation for the compound. Make sure that you closely monitor the thickness that is in each of the coats. Keep in mind that thinner coats typically work better than thicker ones.