How To Fix Cracks In Concrete Basement Walls

Concrete block walls in particular can form cracks for a number of reasons.

How to fix cracks in concrete basement walls.

10d finishing nails partway into the crack spaced 12 in. The injection process fills the crack from top to bottom from inside to outside. Rub the crack vigorously with a wire brush to loosen and remove mortar from the interior of the crack. Scrub the crack with soapy water and rinse with clear water to remove excess dirt and oils.

Use a nail to align injection points. 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. Remove loose pieces of mortar by hand. Mix the two part epoxy.

Vacuum the cinder block crack with a shop vacuum to remove loose mortar dirt and debris. You can t handle this cracked wall by simply filling the crack and finishing off the basement. If a crack between the wall and floor exceeds. Concrete wall crack repair in 8 steps step 1.

First scrub the crack clean of any loose concrete paint or old filler using a wire brush. Wash the walls with an acidic solution check on amazon to neutralize the salt completely and allow to dry for a few hours. To permanently patch the crack we used an epoxy injection system from polygem called the liquid concrete repair kit about 60. We repaired a foundation wall which had an 8 ft long crack that leaked water into the basement during periods of heavy rainfall.

Mist the wall with water and then apply a coat of thoroseal with a latex additive check on amazon. First off brush off any loose material from the basement walls. 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.

The only way to repair foundation wall cracks successfully is by the injection process. 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.