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

Halo Water Proofing started as a small VA crew and grew because Dunn Loring customers kept referring us to neighbors — that's still how most of our work comes in today.

We don't send apprentices to figure it out on your dime. Every Dunn Loring 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 Dunn Loring technicians hear about most often before an inspection.
A musty smell in the basement or crawl space is usually moisture you can't see yet, not just "old house smell."
Even small cracks are worth a second look — they rarely stay small once seasonal ground movement gets involved.
That white chalky film on basement walls is efflorescence — mineral deposits left behind as water evaporates through concrete.
A sump pump that never stops cycling is often working harder than it should, or is undersized for your Dunn Loring lot's water table.
If a foundation wall looks like it's leaning or bulging inward, that's beyond a simple seal and needs a full assessment.
Flooring that's cupping or warping near an exterior wall is a common clue our Dunn Loring crews trace back to a drainage issue.
From an emergency pump swap at 2 a.m. to a full exterior drainage system, this is the work we do in Dunn Loring every day.
Storm season in Dunn Loring, VA means our emergency line gets busy fast — we triage calls by severity so active flooding at your Dunn Loring address jumps the queue ahead of routine inspections.
Call for Emergency Service →Freeze-thaw cycles in Dunn Loring, VA push existing cracks wider every winter, which is why we recommend sealing them before they become an active leak rather than after.
Get a Crack Assessment →A tired or undersized sump pump is the #1 reason we get emergency calls in Dunn Loring after heavy rain. We install battery backup units so your basement stays dry even if the power goes out mid-storm.
Schedule a Pump Inspection →Some Dunn Loring 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 →Older Dunn Loring homes with vented crawl spaces are especially prone to seasonal moisture swings — encapsulation closes that off for good.
Get a Crawl Space Quote →Commercial properties in Dunn Loring 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 →Here's exactly what to expect once you call +1-866-476-1348 for Exterior Waterproofing in Dunn Loring.
You call +1-866-476-1348 and talk to a real technician who asks the right questions to understand what's likely happening at your Dunn Loring property.
A technician inspects the Dunn Loring property in person, checking the foundation, drainage, grading, and any active moisture before recommending a fix.
You receive a written, itemized quote before any work begins — the number you approve is the number you're billed.
Once the repair is done, you get documentation of the work and a written warranty — not just a handshake.
We quote the job in writing after inspecting it in person, so what you agree to on the phone or at your door is what shows up on the final invoice.
Our trucks stage locally around Dunn Loring, which is why emergency calls typically get a technician on-site in under two hours, not "sometime tomorrow."
Warranty terms are explained before you sign, in plain language, so there's no fine print surprise if you ever need to use it.
We'd rather earn a repeat customer with an honest small fix than push a system you don't need.
We can supply the photo documentation and repair scope most Dunn Loring, VA carriers ask for before approving a claim.
Every Dunn Loring job reflects on the next referral, so we treat each one like it's the only advertising that matters.
"They came out the same afternoon I called about water coming in during a storm. Explained everything before they touched anything. Basement's been bone dry since."
"Fair price, showed up on time, cleaned up after themselves. Wish more contractors worked like this."
"Crawl space smelled awful for years. Encapsulation crew did a clean job and the smell is completely gone upstairs now."
"Straightforward commercial quote, no back-and-forth, crew was professional the whole project."
"We had three foundation cracks and expected a huge bill. Turned out only one needed injection — they didn't try to sell us on the other two. That honesty is rare."
"Technician actually explained why the water was coming in instead of just quoting a number. First contractor who's done that for us."
Our Dunn Loring coverage extends across the full metro footprint — residential streets, commercial corridors, and everything between.
Coverage in Dunn Loring includes 22027 22180 22182 and the surrounding communities — if you're just outside that list, call anyway, as we frequently extend service on a case-by-case basis.
Use the map to gauge our Dunn Loring service radius — for an exact confirmation, a quick call is the fastest way to know.
The longer water sits against your Dunn Loring foundation, the more it costs to fix. Our line is open right now.
📞 Call +1-866-476-1348 — Dunn Loring 24/7 Line