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

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

We don't send apprentices to figure it out on your dime. Every Annapolis Junction 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.
Call now and talk to an actual technician, not a script. We'll walk you through what's likely going on and get a crew scheduled.
📞 +1-866-476-1348Water problems rarely announce themselves all at once — they usually show up as small clues first. Here's what our Annapolis Junction technicians hear about most often before an inspection.
Odor is often the first sign Annapolis Junction customers notice, well before any visible water shows up.
Hairline cracks can widen over a Annapolis Junction winter's freeze-thaw cycle and become active leak points by spring.
It's easy to dismiss efflorescence as harmless dust, but it actually signals active moisture movement through the wall.
A sump pump that never stops cycling is often working harder than it should, or is undersized for your Annapolis Junction lot's water table.
This is one sign we tell Annapolis Junction 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.
From an emergency pump swap at 2 a.m. to a full exterior drainage system, this is the work we do in Annapolis Junction every day.
Standing water in your basement doesn't wait for business hours, and neither do we. Our Annapolis Junction emergency crews extract standing water first, then diagnose the entry point so it doesn't happen again next storm.
Call for Emergency Service →A cracked foundation wall isn't just a cosmetic issue — it's a water entry point and, over time, a structural one. Our Annapolis Junction crews assess whether it's a simple seal or a sign of bigger settlement issues before recommending a fix.
Get a Crack Assessment →Most sump pump failures we see in Annapolis Junction happen during the exact storms that need them most — a battery backup closes that gap when the power drops.
Schedule a Pump Inspection →Some Annapolis Junction 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 →A damp, uninsulated crawl space under a Annapolis Junction home drives up humidity, invites mold, and wastes energy year-round. We seal it with heavy-duty vapor barrier, address any standing moisture, and can add dehumidification if needed.
Get a Crawl Space Quote →Commercial properties in Annapolis Junction 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 →No confusing steps, no hard sell — just the same process our Annapolis Junction crews follow on every job.
We start with a phone conversation, not a script — enough to know whether this is an emergency dispatch or a scheduled inspection.
A technician inspects the Annapolis Junction property in person, checking the foundation, drainage, grading, and any active moisture before recommending a fix.
No verbal estimates that change later. What's quoted for your Annapolis Junction job is what's invoiced.
Our crew completes the work, cleans up the site, and walks you through the warranty coverage on what was installed.
There's no verbal quote that magically grows once the crew arrives at your Annapolis Junction property — the written estimate is the final word.
A local dispatch model means the technician who answers questions about your Annapolis Junction 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 Annapolis Junction property later.
If your Annapolis Junction basement just needs a $200 crack seal instead of a $12,000 system, that's what we'll tell you.
We can supply the photo documentation and repair scope most Annapolis Junction, MD carriers ask for before approving a claim.
Every Annapolis Junction job reflects on the next referral, so we treat each one like it's the only advertising that matters.
"Called at 6am with a flooded basement and had a tech at my door by 8. No runaround, no upsell — just fixed it."
"Fair price, showed up on time, cleaned up after themselves. Wish more contractors worked like this."
"Our old sump pump died during the worst storm of the year, obviously. They had a battery backup system installed within a day. Haven't worried about it since."
"Managed our building's parking garage waterproofing project. Kept to the schedule, communicated well with tenants, minimal disruption."
"French drain install took two days like they said it would, not five. Yard was put back together better than before."
"Technician actually explained why the water was coming in instead of just quoting a number. First contractor who's done that for us."
Our Annapolis Junction coverage extends across the full metro footprint — residential streets, commercial corridors, and everything between.
We cover the following Annapolis Junction-area zip codes: 20701 — plus nearby communities. One call confirms coverage and gets a technician scheduled.
The map below shows our general Annapolis Junction coverage footprint. Call +1-866-476-1348 any time to confirm service at your specific address.
One call to +1-866-476-1348 gets a licensed Annapolis Junction technician scheduled — often the same day, 24/7 for active emergencies.
📞 Call +1-866-476-1348 — Annapolis Junction 24/7 Line