From a hairline crack to a fully soaked crawl space, our Uniondale crew has seen it and fixed it. No guesswork, no scare tactics — just a clear plan and a fair price.
Free, no-obligation estimates · Real warranties
We built Halo Water Proofing around a simple promise: show up when we say, tell you the truth about what's wrong, and fix it so it stays fixed.
Our Uniondale crew leads have handled repairs like yours dozens of times before, and a supervisor signs off before we call any job finished.
Our Uniondale crew leads carry years of hands-on repair experience, not just sales training — which is why the advice you get on-site tends to match what actually needs fixing.
Talk to a real Uniondale technician today, not an automated queue. We'll explain what's going on and get you scheduled.
📞 +1-866-476-1348Water problems build slowly before they become emergencies. These are the clues our Uniondale crews hear about most.
Odor is often the very first clue Uniondale homeowners notice, well before any water is visible.
Stair-step cracking in block foundations is one of the most common early signs our Uniondale crews see.
Efflorescence is a reliable early sign that water is moving through your Uniondale foundation wall right now.
If your pump only shuts off for a few minutes at a time, it's worth having it checked before it fails outright.
A wall that's starting to bow is a structural issue on top of a water issue — this jumps to the front of our Uniondale schedule.
Peeling paint near the floor upstairs is one of the last signs Uniondale homeowners connect to a basement problem.
No two Uniondale basements are the same — soil type, age of the home, water table. We match the fix to your actual problem.
A flooded Uniondale basement doesn't wait for morning, and neither do we. Our crews get it out and start drying the space the same visit.
Get Emergency Help →We seal active Uniondale foundation cracks with hydraulic cement injection — stopping the leak at its source instead of patching the surface.
Ask About Crack Repair →Already have a pump that's struggling? We'll test it honestly and tell you whether it needs replacing or just a tune-up.
Book a Pump Check →Some Uniondale properties need both systems working together — we'll say so honestly instead of selling just one.
Talk Drainage Options →A damp Uniondale crawl space drives up humidity throughout the house — we seal it completely with heavy-duty vapor barrier and add dehumidification where needed.
Get a Crawl Space Quote →We handle below-grade waterproofing for Uniondale property managers and business owners, scheduled around your operating hours to limit disruption.
Request a Commercial Quote →Here's exactly what Uniondale customers can expect from first call to final walkthrough.
We figure out fast whether this needs an emergency dispatch or a scheduled inspection.
A Uniondale technician walks the property, checks the foundation and drainage, and explains what's found in plain language.
The number you approve is the number you're billed — no change orders once the crew shows up.
Our crew completes the repair, cleans up, and walks you through the warranty on what was installed.
We've heard every Uniondale horror story about contractors who disappear mid-job or pad the invoice. Here's how we do it differently.
You get a real number before any work starts — what you approve is what you're billed.
We're not routing your call through a national center — the person who answers is close by.
Our major repairs come with written, transferable warranties — useful if you sell the Uniondale property later.
We'd rather earn a repeat Uniondale customer with an honest fix than push a system you don't need.
We photograph the damage and provide a written scope your insurance adjuster can actually use.
Every Uniondale job reflects on the next referral, so we treat each one like it matters.
"Called during a storm and had a tech at my door within two hours. Explained everything before touching anything — basement's been dry since."
"Fair price, on time, cleaned up after. Wish every contractor worked this way."
"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."
"French drain install took two days exactly as quoted, and the yard looked better than before."
"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."
We back our Uniondale work with real, transferable warranties because we plan to be here long after the job is done, not just for the one visit.
📞 +1-866-476-1348Whether you're in an older, established part of Uniondale or a newer subdivision still settling, we've likely already worked on a foundation like yours nearby.
Coverage in Uniondale includes 11549 11530 11553 11556 11590 11555 and neighboring communities — if you're just outside that list, call anyway, since we often extend service case by case.
Use the map as a guide to our Uniondale service radius — a quick call confirms specifics.
One call to +1-866-476-1348 gets a licensed Uniondale technician on the schedule — often same-day, 24/7 for real emergencies.
📞 Call +1-866-476-1348 — Uniondale 24/7 Line