How to Fix Foundation Crack

Foundation cracks can be a major problem for homeowners. If the foundation of your home is cracked, you will need to repair it before anything else.

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Cracks in Your Foundation: Common Causes and Repairs

Cracks in your foundation can be a major problem. They can range from small cracks that only need minor repairs to larger foundation issues that require more extensive foundation repair costs. Regardless of the size, these foundation problems are not something you want to ignore. Some common causes for foundation cracks and what you should do if you have any on your property so you don’t end up with a huge headache.

Find the location of the crack by looking for the place where water is gathering.

Find a level surface that you can stand on to reach down and feel the crack. this will help avoid injury from dropping onto your back or tailbone; also, make sure there are no pets nearby so they don’t get hurt by any falling objects. If it’s too high up, use a ladder to safely access the area while keeping your body as close to perpendicular to the ground (90 degrees) as possible
Have someone else hold one end of the level against one side of the foundation wall and then try sliding it along until you locate the edge of any cracks using an oscillating motion. Mark off at least two feet around each location found. If you have a non-slip ladder, use that to stand on so the level won’t slip. Measure the depth of each crack, this is important for determining which product works best for fixing your foundation problem; most products recommend applying liberally enough such that when they dry their thickness should match the width or height of the cracked area.

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Remove any dirt that may be present in the crack with a

Use a wire brush to remove any loose concrete and degrease the crack with acetone or alcohol. Use an electric drill, hammer, and chisel to break up cracked blocks of mortar in the foundation wall using appropriate tools for cutting through brick, cement block, or stone. This may take some time so be patient. Use your vacuum cleaner again while you work on breaking away these pieces of mortar from your foundation. The goal is to create enough space around the edge of this area where water can flow freely without creating more cracks in the future that will need fixing later.”

Use an orbital sander to sand the surface of the crack, creating enough space for the new mortar to be inserted. The width should span about one inch in both directions from either side of the crack, depending on its size.

Use a sealant to fill in the gap created by the foundation crack

Use a sealant to fill in the gap created by the foundation crack. It is best if this sealant can also be used as an adhesive, like polyurethane caulk or silicone caulking that comes with double-faced tape on one side. Clean out any excess mud and debris from around the cracked area before you apply reinforcement materials such as cement backer rod (a mesh material manufactured of steel that has been coated with an elastomeric binder) or sheet metal screws. Inserting these products into open cracks will help reinforce and stabilize them for fixing. A layer of flexible concrete over the top of those rods should provide additional support against future movement caused by settling soils beneath your home foundation wall.