St. Louis, MO · 24/7 Emergency Response

Plan-driven water damage
and mold remediation in St. Louis.

Water damage and mold remediation across the entire Greater St. Louis metro, run to a written plan instead of a panic estimate. We don’t tell you it’s mold because it looks like mold. We test, we plan, we write the insurance file your carrier actually wants, and we get there fast.

145+ five-star reviews on our sister co. AirSense BBB accredited IICRC trained Licensed & insured

  • 24/7live phone
  • 145+5-star reviews
  • BBBaccredited
Owner of Gateway Water and Mold standing in front of the company branded equipment trailer

You’re dealing with

Signs you need water damage or
mold remediation in St. Louis

A musty smell that won’t go away.

Air-quality testing tells you whether it’s surface mold, hidden mold inside a wall cavity, or just damp drywall. We test before we tear out, and sometimes the test means we tear out less than you feared.

A ceiling stain that keeps coming back.

Patch-and-paint never fixes a wet ceiling. Water always finds the same path. We trace it to source, dry the framing, and document everything for your insurer.

An insurance carrier dragging its feet.

Most kicked-back claims fail because the file is missing scope detail, drying logs, or photos. We write the file your carrier wants the first time, Xactimate-aligned, with adjuster comms when you authorize.

What we promise

What every Gateway water
damage job in St. Louis includes

01

Fast water damage response in
St. Louis, twenty-four seven

When your basement floods at 2 a.m., you don’t get a callback in the morning. You get a live person on the phone and the nearest crew dispatched the moment we hang up. Trucks pre-staged with extraction and drying equipment. Real ETA texts on the call, not “between one and five.”

  • Live phone, not voicemail
  • Pre-staged extraction + drying trucks
  • Crew dispatched the moment you hang up
Gateway technician kneeling on a flooded basement floor, drawing a water extraction wand through standing water beside a submersible pump and discharge hose.
Air-sampling pump on a tripod with a clear spore-trap cassette attached, running in a living room while a Gateway technician sets the flow rate.

02

Do you test for mold
before tearing out drywall?

Unless the damage is visible and obvious, we test first. Air-quality readings. Surface samples. Moisture mapping. Then a written scope built from that data, not from a hunch. The honest version: sometimes the test tells us less needs to come out than you feared. That’s the test doing its job.

  • Air-quality + surface testing in-house
  • Written scope before any demo begins
  • We tell you what you don’t need to remediate

03

How Gateway gets a water
damage insurance claim approved

We write the file your carrier wants, Xactimate-aligned scope, photos, line items, drying logs, moisture readings, equipment counts. No back-and-forth. No kicked-back claims. Stressful enough already; the insurance side shouldn’t add to it.

  • Xactimate-aligned scope and pricing
  • Photo + drying-log documentation built in
  • Direct adjuster communication when you authorize it
Gateway technician photographing a water-stained ceiling and wall with a camera, a documentation clipboard under his arm.

“Our goal isn’t to take a bunch of money and tear things out of your home. Our goal is to be your partner in one of the most stressful situations of your life.”

The Gateway team

The Gateway Standard

How a job runs

What are the steps in
water damage restoration?

  1. 01

    You call, we answer: 24/7 water damage dispatch in St. Louis

    Live phone, twenty-four seven, not voicemail. We confirm the situation, dispatch a crew, and tell you what to do (and not do) until we get there.

  2. 02

    Fast on-site water damage response in St. Louis

    Uniformed crew, clean truck, equipment ready. Drop cloths down before we touch anything. Photo documentation starts the moment we arrive.

  3. 03

    Mold and moisture testing before the remediation plan

    Moisture readings. Air-quality + surface samples where appropriate. Written scope-of-work that explains what we’re doing, why, and what we’re not doing.

  4. 04

    How the water damage file is handed to your insurance carrier

    Xactimate-aligned scope. Drying logs. Photo documentation. Adjuster communication when you authorize it. Your claim goes through the first time.

Insurance

How insurance works for
water damage in St. Louis

We don’t just work with insurance. We’re trained on what every major carrier expects in a water mitigation file, and we deliver that file the first time. Scope, photos, line items, drying logs, moisture readings, equipment counts. No back-and-forth. No kicked-back claims. No months-long delays before your rebuild starts.

  • Xactimate-aligned scope and pricing
  • Photo + drying-log documentation built into every job
  • Direct adjuster communication when you authorize it
  • Track record of clean first-pass approvals
Talk to us about your claim

Service area

What areas of St. Louis
does Gateway serve?

We cover Greater St. Louis end to end, the city, the county, and the surrounding suburbs. Same crew, same fast response, same insurance fluency in every neighborhood we serve. Twenty-four seven.

City & inner-ring

St. Louis · Clayton · University City · Maplewood · Brentwood · Richmond Heights · Webster Groves · Kirkwood

plus the rest of inner St. Louis County

West, North & St. Charles

Chesterfield · Town & Country · Ballwin · Florissant · Hazelwood · Maryland Heights · St. Charles · O’Fallon

plus West County, North County & St. Charles County

See your specific city

Who we are

Who runs Gateway water damage restoration in St. Louis?

Gateway is run by the team behind AirSense Environmental, the BBB-rated indoor air quality and radon mitigation company that’s been serving St. Louis for years. Same owners, same crew, same standards. Over 145 five-star reviews on the AirSense side; we hold every Gateway job to that bar.

BBBAccredited
145+5-star reviews
IICRCTrained crew

Emergency water damage and mold remediation in St. Louis, 24/7

Live phone, twenty-four seven. We’ll dispatch the nearest crew the moment we hang up.

Call (314) 947-3419
Call now · 24/7