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

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

We don't send apprentices to figure it out on your dime. Every Sullivan job is run by a technician who has done this exact repair dozens of times, with a supervisor who signs off before we call it finished.
One call gets you a straight answer and a real appointment window — not a call-back promise.
📞 +1-866-476-1348Water problems rarely announce themselves all at once — they usually show up as small clues first. Here's what our Sullivan technicians hear about most often before an inspection.
If the basement smells damp even when it looks dry, moisture is likely moving through the walls or floor somewhere.
Even small cracks are worth a second look — they rarely stay small once seasonal ground movement gets involved.
Efflorescence is a clear sign that water is actively passing through your Sullivan foundation wall, even if you've never seen standing water.
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 Sullivan 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.
Every Sullivan property is different — soil, slope, foundation age, water table depth. We size the fix to the actual problem, not a one-size package.
Storm season in Sullivan, WI means our emergency line gets busy fast — we triage calls by severity so active flooding at your Sullivan address jumps the queue ahead of routine inspections.
Call for Emergency Service →Freeze-thaw cycles in Sullivan, WI push existing cracks wider every winter, which is why we recommend sealing them before they become an active leak rather than after.
Get a Crack Assessment →Most sump pump failures we see in Sullivan happen during the exact storms that need them most — a battery backup closes that gap when the power drops.
Schedule a Pump Inspection →Some Sullivan lots need both an interior and exterior system working together — we'll tell you honestly if that's the case rather than selling just one.
Ask About Drain Systems →Older Sullivan 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 Sullivan 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 →Here's exactly what to expect once you call +1-866-476-1348 for Exterior Waterproofing in Sullivan.
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 Sullivan property.
We walk the space with you, point out what we find, and explain it in plain language — no jargon, no pressure.
You receive a written, itemized quote before any work begins — the number you approve is the number you're billed.
Our crew completes the work, cleans up the site, and walks you through the warranty coverage on what was installed.
We quote the job in writing after inspecting it in person, so what you agree to on the phone or at your door is what shows up on the final invoice.
A local dispatch model means the technician who answers questions about your Sullivan job is the same one who shows up to do it.
Our repairs come with written, transferable warranties — a real asset if you sell the Sullivan property later.
Our technicians are paid to diagnose correctly, not to upsell — that changes the advice you actually get on-site.
Filing a water damage claim in Sullivan, WI can be confusing — we've done it enough times with Sullivan adjusters to help you avoid common denials.
Our name is on trucks driving around Sullivan 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."
"Crawl space smelled awful for years. Encapsulation crew did a clean job and the smell is completely gone upstairs now."
"Straightforward commercial quote, no back-and-forth, crew was professional the whole project."
"We had three foundation cracks and expected a huge bill. Turned out only one needed injection — they didn't try to sell us on the other two. That honesty is rare."
"Insurance claim was a headache until they stepped in with photos and a written scope. Adjuster approved it within a week after that."
Our Sullivan coverage extends across the full metro footprint — residential streets, commercial corridors, and everything between.
Coverage in Sullivan includes 53178 and the surrounding communities — if you're just outside that list, call anyway, as we frequently extend service on a case-by-case basis.
Use the map to gauge our Sullivan service radius — for an exact confirmation, a quick call is the fastest way to know.
The longer water sits against your Sullivan foundation, the more it costs to fix. Our line is open right now.
📞 Call +1-866-476-1348 — Sullivan 24/7 Line