Houston Clay Soil and Your Foundation: What Homeowners Should Know
Sticking doors, a new crack over a window, a gap where the baseboard used to meet the floor. In Houston, those signs often trace back to the ground under the house.
Why Houston soil moves
Much of the Houston area sits on expansive clay. When it gets wet it swells; when it dries out it shrinks. A long dry spell followed by heavy rain can move the soil under a slab more than most people expect, and that movement shows up in the house above it.
Common warning signs
- Doors or windows that stick or won't latch
- Diagonal cracks at the corners of doors and windows
- Cracks in brick or along mortar lines
- Floors that feel uneven or slope
- Gaps between walls and ceilings or around trim
One sign alone doesn't always mean a foundation problem. Several together are worth a professional look.
What helps
- Keep moisture steady. Big swings in soil moisture are what drive movement.
- Manage drainage. Gutters, downspouts and grading should move water away from the foundation.
- Watch trees and beds near the slab. Roots and heavy watering change moisture next to the foundation.
- Act early. Small issues are easier to scope than ones left for years.
Slab vs pier-and-beam
Many Houston homes are on slabs; older homes are often pier-and-beam. They show movement differently and are repaired differently, so the first step is an on-site assessment.
Get it looked at
BPC Development LLC handles foundation work in Greater Houston, including new foundation pours, foundation repair, framing and structural work, with 18+ years in construction. We'll come out, look at what's happening, and scope it in writing. Planning flatwork too? See Concrete Driveway Cost in Houston.