Halo Water Proofing has been the trusted call for Exterior Waterproofing across Lanham because we answer the phone, show up when we say, and stand behind the work.
Free, no-obligation estimates · 24/7 dispatch
Halo Water Proofing is a MD-licensed Exterior Waterproofing company that treats every Lanham job like it's the only one on the schedule.
Every Lanham technician we send is background-checked and trained on the exact equipment we install — not a subcontractor picked up for the day.
Our Lanham 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.
One phone call gets you a straight answer and a real appointment — not a vague callback promise.
📞 +1-866-476-1348Most Lanham calls didn't start with a flood — 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.
A crack that wasn't there last year is worth a look before it becomes an active leak point.
It's easy to mistake efflorescence for harmless dust, but it actually signals active moisture movement.
A Lanham sump pump that never rests is usually undersized or nearing the end of its life.
This is one sign we tell Lanham customers never to wait on — 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 Lanham crews handle most.
Storm season keeps our Lanham emergency line busy — active flooding always jumps ahead of routine inspections in the queue.
Get Emergency Help →Seasonal ground movement in Lanham tends to widen existing cracks over time, so sealing early usually costs less than waiting.
Ask About Crack Repair →A failed sump pump is the top reason for emergency calls across Lanham after heavy rain — we install pumps sized to your actual water volume, plus battery backup for power outages.
Book a Pump Check →An interior drain tile system routes water to a sump pump before it reaches your Lanham basement floor at all.
Talk Drainage Options →A damp Lanham 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 →Commercial water intrusion means bigger stakes — inventory, tenants, downtime. We scope commercial Lanham jobs with written specs and a real timeline.
Request a Commercial Quote →Here's exactly what Lanham customers can expect from first call to final walkthrough.
You'll talk to a person, not a script — 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 — 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 Lanham 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.
Warranty terms are explained in plain language before you sign, with no fine-print surprises later.
If your Lanham 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 — we've walked Lanham customers through this process many times.
Word of mouth is still how most Lanham customers find us, which keeps our standards high.
"Woke up to a wet basement and had someone out by mid-morning. No pressure, no upsell, just fixed it."
"Fair price, on time, cleaned up after. Wish every contractor worked this way."
"Crawl space smelled bad for years. After encapsulation, the smell upstairs is completely gone."
"Straightforward commercial quote, professional crew, no back and forth."
"Expected a huge bill for three cracks, only one actually needed injection. Appreciated the honesty."
"First contractor who actually explained where the water was coming from instead of just quoting a number."
"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 — no arguing, no extra invoice. That's written into every Lanham contract we sign.
📞 +1-866-476-1348Whether you're in an older, established part of Lanham or a newer subdivision still settling, we've likely already worked on a foundation like yours nearby.
We cover these Lanham-area zip codes: 20706 — plus nearby communities. One call confirms coverage and gets a technician scheduled.
The map below shows our general Lanham coverage area. Call +1-866-476-1348 to confirm service at your exact address.
The longer water sits against your foundation, the more it costs to fix. Our Lanham line is open right now.
📞 Call +1-866-476-1348 — Lanham 24/7 Line