Signs you need foundation repair
Stair-step cracks, sticking doors, sloping floors — which signs are serious.
By The T.A.P. Team · September 2024 · 6 min read
Because North Texas sits on expansive clay soil, foundation movement is common — and it announces itself through a recognizable set of signs: stair-step cracks in brick, doors and windows that stick, sloping or uneven floors, gaps opening at trim and where walls meet ceilings, and cracks running from the corners of doorways. Not every crack means trouble, but a cluster of these signs warrants a professional evaluation. Here's what to look for.
- Stair-step cracks in exterior brick/mortar
- Doors and windows that stick or won't latch
- Sloping, sagging, or uneven floors
- Gaps at trim, or where walls meet ceilings
- Cracks from the corners of doors/windows
Exterior signs
Outside, the classic sign is stair-step cracking in brick and mortar that follows the joints, along with separation at corners, gaps opening around the garage door, and a chimney that's tilting or pulling away from the house. Because brick is rigid, it shows foundation movement clearly — a stair-step crack is one of the most reliable outdoor indicators.
Interior signs
Inside, foundation movement racks door and window frames so they stick or won't latch, opens cracks that run diagonally from the corners of doors and windows, and shows up as drywall and ceiling cracks, nail pops, and gaps at the baseboards. A door that suddenly starts sticking — especially several around the house — is a common early clue.
Floor signs
Underfoot, watch for sloping or uneven floors (a dropped ball or marble rolls to one side), cracked or popping tile, and gaps opening under the baseboards. Floors that feel "off" as you walk, or furniture that seems to lean, can reflect the slab moving beneath them.
When to act
A few hairline cracks can be normal settling — see are foundation cracks serious. But a cluster of these signs, cracks that widen over time, or doors that suddenly stick point to real movement and deserve a professional evaluation (usually free). This guide is general information, not a diagnosis — see the foundation warning signs page and our foundation team.
| Symptom | Likely cause | What to do |
|---|---|---|
| Stair-step cracks in brick | Foundation movement | Get an evaluation |
| Doors/windows sticking | Frames racking | Note how many; evaluate |
| Sloping/uneven floors | Slab movement | Check with a level/ball |
| Cracks from door corners | Movement stress | Monitor; evaluate |
| Gaps at trim/ceilings | Separation | Have it assessed |
You can DIY
- Note and photograph the signs
- Mark and date crack widths
- Check floors for slope
- Count how many doors stick
- Watch whether signs worsen
Call a pro
- A professional evaluation
- Any structural concern
- Cracks that keep growing
- A plumbing test for leaks
- The repair itself
One hairline crack rarely means much, but foundation movement shows up as a pattern — stair-step brick cracks plus sticking doors plus sloping floors, often getting worse over a season. When you see several signs together, or cracks that grow, get a professional evaluation (most foundation companies offer them free). Catching movement early keeps a modest repair from becoming a major one.
Foundation movement in North Texas
DFW's expansive clay makes these signs common across Plano, Frisco, and McKinney — especially after a hot, dry summer. We offer free evaluations to tell you whether it's cosmetic or real. See our foundation team.
The short version
- North Texas clay soil makes foundation movement common — and it shows recognizable signs.
- Stair-step cracks in exterior brick are a classic, reliable indicator.
- Sticking doors and windows and cracks from their corners point to movement.
- Sloping or uneven floors and cracked tile reflect the slab moving.
- A cluster of signs — or cracks that widen over time — warrants a pro evaluation.
- A few hairline cracks can be normal; the pattern and growth are what matter.
Foundation repair signs — frequently asked questions
Seeing warning signs?
Get a free foundation evaluation — cosmetic or real, we'll tell you straight. Serving Dallas–Fort Worth & North Texas for over 25 years.