How To Fix Cracks In Concrete Basement Walls

Wash the walls with an acidic solution check on amazon to neutralize the salt completely and allow to dry for a few hours.

How to fix cracks in concrete basement walls.

To permanently patch the crack we used an epoxy injection system from polygem called the liquid concrete repair kit about 60. The only way to repair foundation wall cracks successfully is by the injection process. Stair step cracks may cause cracks in other walls above or a door to rub but they don t compromise the strength of the foundation. Before you reach for the phone take your time and inspect the crack you ve spotted.

First off brush off any loose material from the basement walls. Vacuum the cinder block crack with a shop vacuum to remove loose mortar dirt and debris. Injecting a typical wall crack with an epoxy or urethane resin is done under pressure pushing the material from the inside all the way to the outside. Concrete wall crack repair in 8 steps step 1.

The injection process fills the crack from top to bottom from inside to outside. We repaired a foundation wall which had an 8 ft long crack that leaked water into the basement during periods of heavy rainfall. You can t handle this cracked wall by simply filling the crack and finishing off the basement. Concrete block walls in particular can form cracks for a number of reasons.

Rub the crack vigorously with a wire brush to loosen and remove mortar from the interior of the crack. If you only had the stair step cracks you could go ahead with your basement finish work because that type of crack is a normal sign of settling. Mist the wall with water and then apply a coat of thoroseal with a latex additive check on amazon. Scrub the crack with soapy water and rinse with clear water to remove excess dirt and oils.

10d finishing nails partway into the crack spaced 12 in. Some cracks are just annoyances while others are symptoms of a larger problem and with a little bit of know how you can tell the difference. Repairing a foundation crack of this nature is similar to repairing other non structural cracks. Fill it with a caulk suitable for use on concrete.

Use a nail to align injection points. Mix the two part epoxy.