When a foundation wall is too severely damaged to be adequately repaired, it is usually necessary to rebuild it. This will be the case if the wall material is spalling, if the wall has moved too far, or if the cracks are too numerous. Before rebuilding the wall it will be necessary to correct the problem that has caused the wall to fail, usually a water problem. Once that problem has been corrected and permits obtained the construction can be scheduled.
The first step is to install adjustable jack posts along the wall to be removed. Then the damaged wall is removed down to the footing. The outside area is then excavated and all dirt and block rubble is loaded and hauled away. A new cement block wall of the proper dimension is installed and tied into the existing wall. If additional strength is needed, 1/2” grade 60 rebar can be placed in the open cells and grouted in place. When the rebuild is completed exterior waterproofing is usually required to further help prevent the damage that destroyed the old wall from affecting the new wall. Exterior waterproofing is addressed here. The remaining dirt is hauled away and the site is cleaned up. The adjustable jacks are carefully removed and the rebuild is complete. Expect to pay $250-$325 per linear foot.