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St. Louis City · St. Louis County · St. Charles CountyPhone answered 24/7, wet spring or dry August · (314) 932-9816
Gateway Foundation WorksSt. Louis foundation repair
Dark storm clouds gathering over a street of brick homes in a St. Louis suburb
Guide

Found foundation damage? What to do first

Most foundation problems can wait for a calm inspection. A few cannot. This page sorts the two and walks through the first hour of the ones that cannot.

Can it wait?

What you seeUrgency
Old crack, not changingBook an inspection when it suits you
New crack, doors starting to stickBook within days, mark and photograph the crack
Basement wall leaning more week to weekCall today
Wall blocks shifting, crack opening fastCall now and keep clear of the wall
Water pouring in, pump stoppedCall now

The first hour

  1. Safety. Keep people and pets away from a moving wall. Do not walk through basement water near outlets, the furnace or the water heater.
  2. Power. If water is rising and you can reach the breaker panel without stepping in water, switch off the basement circuits.
  3. Water. If the sump pump has stopped, check that it is plugged in and the breaker is on. A stuck float can sometimes be freed by hand.
  4. Record. Photos and video of everything, with the time. Insurers want them.
  5. Call. Describe what you see and we tell you whether it needs a crew now or can wait for morning.

After the storm passes

Once the basement is dry and the wall is shored, the real questions start: why did the water get in, why did the wall move, and what keeps it from happening again. That is the inspection, and it is still free after an emergency visit.

St. Louis weather to plan for

Spring and early summer bring the heaviest thunderstorms, and the July 2022 flash flooding showed how fast basements across the region can fill. Long dry spells in late summer do the opposite: the clay shrinks and cracks open. Both seasons are when calls spike.

Quick answers

Should I try to push a bowing wall back?

No. Leave it alone, keep clear and call. Pushing on a failing wall can make it collapse.

Can I run a wet vac in a flooded basement?

Only if the area is dry around the outlet and the power is safe. Otherwise wait for the water to be pumped out.

Is mold a risk after flooding?

Yes, if things stay wet for more than a day or two. Get water out and air moving as fast as you safely can.

Book a free inspection

The Gateway Arch and the downtown St. Louis riverfront across the Mississippi River at dusk

Seeing a crack you did not see last year?

Call or send the form. An inspector measures the house, explains what is moving and why, and puts the repair and its price on paper before anything is dug.

Phone (314) 932-9816