From a hairline foundation crack to a fully flooded crawl space, Halo Water Proofing has handled it in Saint Louis before. We show up, we diagnose it straight, and we fix it right.

We're Halo Water Proofing — a MI-licensed, fully insured waterproofing outfit that's spent years learning exactly how water moves through Saint Louis-area foundations, and exactly how to stop it.

Every technician on our Saint Louis crew is background-checked, factory-trained on the equipment we install, and held to the same estimate we quote you over the phone — no upsell surprises when the truck pulls up.
Call now and talk to an actual technician, not a script. We'll walk you through what's likely going on and get a crew scheduled.
📞 +1-866-476-1348Most Saint Louis customers didn't wake up one day with a flooded basement. It usually started small. These are the early signs worth calling about.
Odor is often the first sign Saint Louis customers notice, well before any visible water shows up.
Hairline cracks can widen over a Saint Louis winter's freeze-thaw cycle and become active leak points by spring.
It's easy to dismiss efflorescence as harmless dust, but it actually signals active moisture movement through the wall.
If your pump is running around the clock instead of only during storms, it's worth having it evaluated before it fails completely.
This is one sign we tell Saint Louis customers not to wait on — wall movement tends to progress rather than resolve on its own.
Peeling paint low on a basement wall or warped baseboards upstairs often trace back to moisture migrating up from below.
From an emergency pump swap at 2 a.m. to a full exterior drainage system, this is the work we do in Saint Louis every day.
Storm season in Saint Louis, MI means our emergency line gets busy fast — we triage calls by severity so active flooding at your Saint Louis address jumps the queue ahead of routine inspections.
Call for Emergency Service →A cracked foundation wall isn't just a cosmetic issue — it's a water entry point and, over time, a structural one. Our Saint Louis crews assess whether it's a simple seal or a sign of bigger settlement issues before recommending a fix.
Get a Crack Assessment →A tired or undersized sump pump is the #1 reason we get emergency calls in Saint Louis after heavy rain. We install right-sized primary pumps so your basement stays dry even if the power goes out mid-storm.
Schedule a Pump Inspection →An interior drain tile system channels water to a sump pump before it ever reaches your Saint Louis basement floor — one of the most reliable long-term fixes we install.
Ask About Drain Systems →Older Saint Louis homes with vented crawl spaces are especially prone to seasonal moisture swings — encapsulation closes that off for good.
Get a Crawl Space Quote →Commercial properties in Saint Louis carry bigger stakes when water gets in: inventory, tenants, downtime. We scope commercial jobs with the same crew leads who run our residential work, backed by written specs and timelines.
Request a Commercial Quote →No confusing steps, no hard sell — just the same process our Saint Louis crews follow on every job.
You call +1-866-476-1348 and talk to a real technician who asks the right questions to understand what's likely happening at your Saint Louis property.
A technician inspects the Saint Louis property in person, checking the foundation, drainage, grading, and any active moisture before recommending a fix.
No verbal estimates that change later. What's quoted for your Saint Louis job is what's invoiced.
Our crew completes the work, cleans up the site, and walks you through the warranty coverage on what was installed.
You get a written number before any work begins — the price you approve is the price you pay, no change-order games.
A local dispatch model means the technician who answers questions about your Saint Louis job is the same one who shows up to do it.
If a covered repair fails, we come back and make it right. That's written into every contract, not just promised on the phone.
We'd rather earn a repeat customer with an honest small fix than push a system you don't need.
We can supply the photo documentation and repair scope most Saint Louis, MI carriers ask for before approving a claim.
Our name is on trucks driving around Saint Louis every day — we don't cut corners on a job our neighbors will see.
"They came out the same afternoon I called about water coming in during a storm. Explained everything before they touched anything. Basement's been bone dry since."
"Fair price, showed up on time, cleaned up after themselves. Wish more contractors worked like this."
"Our old sump pump died during the worst storm of the year, obviously. They had a battery backup system installed within a day. Haven't worried about it since."
"Managed our building's parking garage waterproofing project. Kept to the schedule, communicated well with tenants, minimal disruption."
"French drain install took two days like they said it would, not five. Yard was put back together better than before."
"Insurance claim was a headache until they stepped in with photos and a written scope. Adjuster approved it within a week after that."
Halo Water Proofing provides Waterproofing throughout Saint Louis and the surrounding zip codes, from established neighborhoods to newer developments still settling on their foundations.
We cover the following Saint Louis-area zip codes: 48880 — plus nearby communities. One call confirms coverage and gets a technician scheduled.
Use the map to gauge our Saint Louis service radius — for an exact confirmation, a quick call is the fastest way to know.
The longer water sits against your Saint Louis foundation, the more it costs to fix. Our line is open right now.
📞 Call +1-866-476-1348 — Saint Louis 24/7 Line