Foundation leaking? Basement smells off? Halo Water Proofing sends a real technician to your Annandale property, gives you a straight answer, and fixes it right the first time.
Background-checked Annandale technicians Β· Written pricing

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.
We don't run a bidding war between crews. The Annandale technician who inspects your property is the same one who does the repair, start to finish.
We've worked on foundations from decades-old Annandale homes to brand-new builds still settling into their soil, so whatever your basement is dealing with, we've likely seen a version of it nearby.
Talk to a real Annandale technician today, not an automated queue. We'll explain what's going on and get you scheduled.
π +1-866-476-1348Water problems build slowly before they become emergencies. These are the clues our Annandale crews hear about most.
Odor is often the very first clue Annandale homeowners notice, well before any water is visible.
A crack that wasn't there last year is worth a look before it becomes an active leak point.
Efflorescence is a reliable early sign that water is moving through your Annandale foundation wall right now.
A pump under constant strain tends to fail during the exact storm that needs it most.
This is one sign we tell Annandale customers never to wait on β wall movement tends to progress, not resolve on its own.
These upstairs clues usually show up months after the basement moisture problem actually started.
Whatever's going on with your Annandale property, chances are we've already fixed something similar nearby this month.
A flooded Annandale basement doesn't wait for morning, and neither do we. Our crews pull the standing water and start drying the space the same visit.
Get Emergency Help βNot every crack means a structural problem, but every crack deserves a real look. We'll tell you which kind yours is.
Ask About Crack Repair βAlready 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 βAn interior drain tile system routes water to a sump pump before it reaches your Annandale basement floor at all.
Talk Drainage Options βOlder Annandale homes with vented crawl spaces see the biggest swings in seasonal humidity β encapsulation closes that off for good.
Get a Crawl Space Quote βWe can phase larger Annandale commercial projects around business hours or tenant schedules so operations keep running.
Request a Commercial Quote βHere's exactly what Annandale customers can expect from first call to final walkthrough.
You'll talk to a person, not a script β 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.
Every Annandale quote is written before work starts, not estimated verbally and adjusted later.
Our crew completes the repair, cleans up, and walks you through the warranty on what was installed.
Plenty of companies advertise Emergency Waterproofing in Annandale β here's what actually separates the ones worth calling from the ones that aren't.
There's no verbal quote that grows once the crew shows up β 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.
If your Annandale basement just needs a small crack seal instead of a full system, that's exactly what we'll tell you.
Filing a claim can be confusing β we've walked Annandale customers through this process many times.
Our trucks are recognizable around Annandale β we don't cut corners on jobs our neighbors will see.
"Called during a storm and had a tech at my door within two hours. Explained everything before touching anything β basement's been dry since."
"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."
"Crawl space smelled bad for years. After encapsulation, the smell upstairs is completely gone."
"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."
"Crew was respectful of our landscaping during the drain install and left the yard looking better than before they started."
If a covered repair doesn't hold up, we come back and make it right β no arguing, no extra invoice. That's written into every Annandale contract we sign.
π +1-866-476-1348Whether you're in an older, established part of Annandale or a newer subdivision still settling, we've likely already worked on a foundation like yours nearby.
Zip codes we serve in and around Annandale: 22003 22042. Not sure your address is included? Call +1-866-476-1348 and we'll confirm right away.
The map below shows our general Annandale coverage area. Call +1-866-476-1348 to confirm service at your exact address.
One call to +1-866-476-1348 gets a licensed Annandale technician on the schedule β often same-day, 24/7 for real emergencies.
π Call +1-866-476-1348 β Annandale 24/7 Line