Concrete Block Foundation Repair: What Homeowners Need to Know

A strong, stable foundation is the backbone of any home. For many properties, especially older ones, that foundation is built using concrete blocks. While durable, concrete block foundations are not immune to damage over time. Cracks, bowing, water intrusion, and structural shifting can all signal trouble. Knowing what to watch for and how to respond can save homeowners thousands of dollars and prevent major structural issues down the road. In this guide, we’ll explore the key signs of foundation trouble, the causes behind the damage, repair options, and when to call in a professional. What Is a Concrete Block Foundation? Concrete block foundations, also known as CMU (concrete masonry unit) foundations, are made up of hollow rectangular blocks stacked and mortared together. They’re commonly used for basements and crawl spaces and have been popular in residential construction for decades due to their affordability, strength, and fire resistance. However, because they are assembled i...