A basement wall crack in a poured basement foundation is generally caused by concrete shrinkage. This shrinkage can continue for three years after the basement wall has been initially poured and sometimes can occur even longer afterward. Even after this period, continued pressures, such as soil contraction and expansion, can cause further foundation cracks and separation.
So a long-term solution is needed — one that is flexible enough to permanently fix the crack even with continued wall movement. Concrete Rescue has been repairing foundation cracks for years using various methods. Structural epoxy injection is a great option for gravity feed crack repair in concrete and masonry. We use a high modulus, high strength epoxy adhesive that is capable of penetrating deep into cracks to seal them properly.