From a hairline crack to a fully soaked crawl space, our Smithtown crew has seen it and fixed it. No guesswork, no scare tactics โ just a clear plan and a fair price.
Free, no-obligation estimates ยท Written pricing

Halo Water Proofing is a NY-licensed Wet Basement Repair company that treats every Smithtown job like it's the only one on the schedule.
Our Smithtown crew leads have handled repairs like yours dozens of times before, and a supervisor signs off before we call any job finished.
Our Smithtown crew leads carry years of hands-on repair experience, not just sales training โ which is why the advice you get on-site tends to match what actually needs fixing.
Talk to a real Smithtown technician today, not an automated queue. We'll explain what's going on and get you scheduled.
๐ +1-866-476-1348Most Smithtown calls didn't start with a flood โ they started with one of these small signs weeks or months earlier.
If the basement smells damp no matter the season, water is likely finding a way in somewhere you can't see.
Small cracks in a Smithtown foundation rarely stay small โ seasonal ground movement tends to widen them over time.
That white powder on basement walls is mineral residue left behind as water passes through the concrete.
A Smithtown sump pump that never rests is usually undersized or nearing the end of its life.
This is one sign we tell Smithtown customers never to wait on โ wall movement tends to progress, not resolve on its own.
These upstairs clues usually show up months after the basement moisture problem actually started.
From a 2 a.m. sump pump failure to a planned exterior drainage project, here's what our Smithtown crews handle most.
Storm season keeps our Smithtown emergency line busy โ active flooding always jumps ahead of routine inspections in the queue.
Get Emergency Help โWe seal active Smithtown foundation cracks with epoxy injection โ stopping the leak at its source instead of patching the surface.
Ask About Crack Repair โMost Smithtown pump failures happen during the exact storms that need them most, which is exactly why battery backup matters.
Book a Pump Check โSome Smithtown properties need both systems working together โ we'll say so honestly instead of selling just one.
Talk Drainage Options โA damp Smithtown crawl space drives up humidity throughout the house โ we seal it completely with heavy-duty vapor barrier and add dehumidification where needed.
Get a Crawl Space Quote โWe can phase larger Smithtown commercial projects around business hours or tenant schedules so operations keep running.
Request a Commercial Quote โHere's exactly what Smithtown customers can expect from first call to final walkthrough.
You'll talk to a person, not a script โ enough of a conversation to know what to expect before anyone shows up.
We point out exactly what we find as we find it, so nothing about the diagnosis feels like a black box.
The number you approve is the number you're billed โ no change orders once the crew shows up.
Once the job's done, you get written proof of what was installed and exactly what the warranty covers.
We've heard every Smithtown horror story about contractors who disappear mid-job or pad the invoice. Here's how we do it differently.
There's no verbal quote that grows once the crew shows up โ the written estimate is final.
A local dispatch model means the technician who answers your questions is the same one who shows up.
Warranty terms are explained in plain language before you sign, with no fine-print surprises later.
We'd rather earn a repeat Smithtown customer with an honest fix than push a system you don't need.
Filing a claim can be confusing โ we've walked Smithtown customers through this process many times.
Our trucks are recognizable around Smithtown โ we don't cut corners on jobs our neighbors will see.
"Woke up to a wet basement and had someone out by mid-morning. No pressure, no upsell, just fixed it."
"Got three quotes for a crack repair. This was the only company that actually explained why the crack was happening instead of just naming a price."
"Our sump pump died during the worst storm of the year, obviously. Battery backup was installed the next day and we haven't worried since."
"Handled waterproofing for our parking structure with minimal disruption to tenants and stuck to the schedule."
"Expected a huge bill for three cracks, only one actually needed injection. Appreciated the honesty."
"Insurance claim was stressful until they stepped in with photos and a written scope. Approved within a week."
"Sump pump inspection was thorough and they didn't try to sell me a new one when mine just needed a part replaced."
Every Smithtown technician we send is background-checked and trained on the systems we install, so the crew that inspects your property is the same one that fixes it.
๐ +1-866-476-1348Our Smithtown coverage spans the full metro area, residential and commercial alike.
Zip codes we serve in and around Smithtown: 11787. Not sure your address is included? Call +1-866-476-1348 and we'll confirm right away.
Use the map as a guide to our Smithtown service radius โ a quick call confirms specifics.
One call to +1-866-476-1348 gets a licensed Smithtown technician on the schedule โ often same-day, 24/7 for real emergencies.
๐ Call +1-866-476-1348 โ Smithtown 24/7 Line