Signs of Foundation Problems

Not every crack is serious, but these signs are worth a professional look — especially in San Antonio's shifting clay.

• Diagonal cracks in drywall above doors and windows
• Doors that stick or won't latch
• Windows that are hard to open
• Stair-step cracks in brick
• Sloping or uneven floors
• Gaps between walls and ceiling or trim
• Cracked floor tile
• Cabinets or counters pulling away from walls

Outside the house

• Gaps around window and door frames on brick walls
• Chimney leaning or separating
• Cracks in the slab edge (beam) wider than a credit card
• Soil pulling away from the foundation in summer

When to call

If cracks are growing, wider than about 1/8 inch, or you notice several signs together, get an inspection. Hairline cracks from normal concrete shrinkage are common and often harmless.

Simple prevention

Keep soil moisture consistent with a soaker hose about 12–18 inches from the slab during dry months, keep gutters draining away from the house, and fix plumbing leaks quickly.