There are several ways tree roots can affect your foundation.
Tree roots can add pressure to your home’s basement or crawl space walls, forcing them to crack and bow inward. Once cracked, water has an easy entry point.
Even if tree roots don’t reach your foundation walls just yet, tree roots suck up such large amounts of water that it causes erosion, resulting in your home sinking.
Tree roots under your foundation can cause heaving, and all these problems can mean costly foundation repair.