Have you ignored a small crack in your basement's foundation, and now it has become quite large? This is a big problem that needs to be addressed. Thankfully, it can be fixed using the following steps.
Fill The Crack With Expanding Foam
The first step will be to partially fill the crack in with triple-expanding foam. It's a special type of foam that is water-resistant and capable of insulating the crack. It should not allow air to get in or out once it expands and dries. This foam can be purchased at a local home improvement store since it is commonly used to seal around pipes that enter a building.
The goal should not be to fill in the crack completely with the foam since you'll need to fill it in with mortar later on. Leave about an inch of space from the edge of the wall, making sure not to let it overflow. If it does, you will need to chisel out the foam once it dries.
Expand The Crack Across The Wall
It may seem counterintuitive to make a crack worse in order to fix it, but it will be necessary to make the crack bigger to perform the repair. The crack may be big and deep in some parts, but small in other places. You will need to use a chisel to remove about an inch of your foundation wall across the entire crack.
Prepare The Mortar
You'll need to make the mortar that will go into the crack. However, you need to add some acrylic bonding material to the mix to help it stick to the mortar. Just be sure to follow the directions on the bonding material to ensure it's being added to the mortar correctly.
Apply The Mortar
Before you apply the mortar, you'll want to wet the surface with a sponge so that it has moisture on it. If not, that wall is going to absorb the moisture from the mortar and cause it to not dry properly. You can then take the mortar and apply it to the crack using a putty knife. Push the mortar into the crack, smooth it out, and remove any extra mortar. Once it dries, you can cover it with a coat of paint.
Do you not feel confident to repair this foundation crack on your own? Reach out to a foundation repair contractor for their assistance with fixing this type of damage.Share
7 January 2020
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