Foundation Crack Repair in Abilene
Hairline shrinkage cracks are common and usually cosmetic. Wider cracks, cracks that keep growing, or cracks with one side higher than the other point to movement that needs attention.
Signs you may need foundation crack repair
One sign on its own can be normal. Two or more, especially near the same corner of the house, are worth a survey.
Three ways to fix it
The survey and the soil decide which one fits your house. A good contractor explains why they picked it.
| Method | How it works | Usually chosen when |
|---|---|---|
| M-1Seal and monitor | The crack is cleaned and filled with a flexible sealant, and its ends are marked and dated so any growth is obvious. | The crack is narrow, has no offset and isn't changing. |
| M-2Repoint brick | Cracked mortar joints are raked out and refilled, and any broken bricks are replaced. | Stair-step cracks in brick veneer, once the movement behind them has stopped or been fixed. |
| M-3Stabilize, then repair | The foundation is supported first with piers, shims or drainage work, and the crack is repaired once the readings show movement has stopped. | Wide, growing or offset cracks, or cracks that come with sticking doors and sloping floors. |
How the work is done
Nothing is dug or lifted until you have the readings and a written plan in hand.
- 01Measure and document each crackWidth, length, direction and any offset are recorded with photos, so changes are easy to spot later.
- 02Determine whether movement is activeElevation readings and, where needed, a second look weeks or months later show whether the crack is still moving.
- 03Seal cosmetic cracks; stabilize the cause of structural onesCosmetic cracks are filled or repointed. Structural ones wait until the foundation behind them has been supported.
- 04Re-check after repairThe crack and the floor readings are checked again to confirm nothing has reopened.
Find out if your foundation has moved.
The elevation survey is free, and you keep the readings whatever you decide.
Foundation Crack Repair: questions
How wide is too wide?
One engineering guideline grades crack width like this: hairline up to 1/8 inch is negligible to slight, 3/16 to 9/16 inch is moderate, 9/16 inch to 1 inch is severe, and over 1 inch is very severe (R. W. Day, Forensic Geotechnical and Foundation Engineering, 2011). Width is only a starting point, though.
Besides width, what makes a crack serious?
Cracks are more likely to point to a foundation problem when one side sits noticeably higher than the other, when they keep growing, or when they come with doors that won't close and floors that slope. A crack on its own, with none of those, is often just shrinkage or seasonal movement.
How do I monitor a crack myself?
Mark both ends with a pencil line and the date, and take a photo with a ruler or coin beside it for scale. Check again after the next dry spell and after heavy rain. If the crack runs past your marks or gets wider, it's still moving.
Are cracks in a slab floor normal?
Usually. Concrete shrinks as it dries, and shrinkage cracks in slab floors are common and don't by themselves weaken the foundation. Keep an eye out for one that widens or develops an offset.
Should I patch a crack before fixing the foundation?
Not while the foundation is still moving, or the patch will simply crack again. Cosmetic repairs make most sense once the movement has stopped, either on its own or after the foundation has been stabilized.
Why do some cracks open in summer and close in winter?
Clay soil shrinks as it dries and swells when it gets wet, and building materials expand and contract with temperature and moisture. A crack that opens and closes with the seasons is still worth tracking, because the movement behind it is real.