Foundation Drainage in Houston, TX
Piers fix a slab that has already moved. Drainage is what stops it from moving again. When water pools against a foundation instead of running away from it, the clay beneath stays on the same swell-shrink cycle that caused the damage in the first place — $0 down and 0% APR for 18 months if repair work is needed alongside it.
A French drain and membrane doing the job the slope alone can't — moving water away from the footing before it ever reaches the clay.
Regrading vs. French drains
Regrading
Reshaping the slope of the yard so water runs away from the foundation by gravity instead of pooling against it. Usually the first and cheapest fix, and often enough on its own where the lot has room to slope.
French drain
A buried perforated pipe in gravel that intercepts water below grade and redirects it away from the foundation. Used where regrading alone can't move enough water fast enough — flat lots, high water tables, or low spots that trap runoff.
- Standing water near the foundation more than 24 hours after rain
- A downspout that empties directly against the slab or crawl space
- Soil visibly pulling away from the foundation during dry spells
- Foundation damage that reappears in the same spot after a repair
- A crawl space that stays damp or musty between rains
- Mulch beds or flower beds built up against the foundation, trapping water
A pier repair on a slab that still sits on poorly-draining soil is a repair on a timer. If the elevation survey turns up standing water, a downspout dumping next to the foundation, or a crawl space holding moisture, we flag it as part of the same visit — not a separate upsell after the fact.
Drainage questions
- Why does drainage matter for foundation repair?
- A lifted slab that sits on the same poorly-draining soil will eventually move again. Water pooling against the foundation keeps the clay beneath it swelling and shrinking on the same cycle that caused the damage — fixing the pier without fixing the water source just delays the next repair.
- What's the difference between a French drain and regrading?
- Regrading changes the slope of the yard so water runs away from the foundation instead of pooling against it — the first thing to fix, and often the cheapest. A French drain is a buried perforated pipe that intercepts water below grade and redirects it, used where regrading alone can't move enough water fast enough, such as flat lots or areas with a high water table.
- Do I need drainage work if I'm getting piers installed?
- Not always, but it's checked as part of the same evaluation. If the survey shows water pooling against the foundation or a downspout dumping next to the slab, we flag it before the pier work starts rather than after you've paid for a repair the same water problem will undo.
Find out where the water is actually going
A free evaluation covers drainage the same way it covers the slab — before anyone quotes you a fix.