Basement block walls require close scrutiny during your inspection because they can fail in many ways. Let’s focus on one: horizontal movement. Why Block Basement Walls Move Inward A concrete masonry unit (CMU) is a standard-size rectangular block used in home construction. Block basement or foundation walls don’t have the strength to resist much horizontal pressure. Pressure from clay or expansive soils can move block walls inward. So can faulty exterior maintenance by the owner, including poor control of surface water. During your inspection, you might encounter repairs made to ...
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