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Drainage & Moisture

Standing Water Near Your Foundation? Do This

Standing water against your slab is one of the most damaging things for a Central Texas foundation. Here’s why — and the fastest ways to stop it.

Why it’s dangerous

Pooled water keeps the clay at the slab edge fully swollen, then it shrinks hard in drought — maximizing the seasonal swing that cracks foundations.

droughtrainClay swells when wet, shrinks when dry — the slab rides it
ANIMATION · Drought-to-rain cycleLoops

Fast fixes

Extend downspouts, correct the grade to slope away, and add drains or swales where water collects. Simple steps that genuinely protect the slab.

TopsoilExpansive clay — swells & shrinksLoad-bearing stratum
FIG · Expansive clay cross-sectionN.T.S.

When to measure

If you’ve already seen cracks where the water pools, get a free survey — the movement may have started.

Key takeaways
  • Pooled water maximizes the swell-shrink swing.
  • Downspouts, grading, and drains stop it fast.
  • Cracks at the pool zone mean it’s time to measure.
Free inspection

Not sure how serious it is?

Get a free, ±⅛-inch elevation survey and a written, engineer-backed plan — no pressure.

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Frequently asked

How far should water drain from the house?
Aim to carry roof and surface water several feet beyond the foundation, onto positive grade.
Is mulch against the foundation bad?
Excess moisture-holding material right at the slab can worsen swelling; grade and drainage come first.
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