Halo Water Proofing has been the trusted call for Exterior Waterproofing across Herndon because we answer the phone, show up when we say, and stand behind the work.
Licensed & insured in VA · Written pricing
Halo Water Proofing is a VA-licensed Exterior Waterproofing company that treats every Herndon job like it's the only one on the schedule.
We don't run a bidding war between crews. The Herndon technician who inspects your property is the same one who does the repair, start to finish.
We've worked on foundations from decades-old Herndon 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.
One phone call gets you a straight answer and a real appointment — not a vague callback promise.
📞 +1-866-476-1348Catching one of these early usually means a smaller repair bill and a lot less stress for Herndon homeowners.
A musty smell usually means moisture is already moving through your Herndon basement, even if the floor looks bone dry.
Stair-step cracking in block foundations is one of the most common early signs our Herndon crews see.
That white powder on basement walls is mineral residue left behind as water passes through the concrete.
A Herndon sump pump that never rests is usually undersized or nearing the end of its life.
A wall that's starting to bow is a structural issue on top of a water issue — this jumps to the front of our Herndon schedule.
These upstairs clues usually show up months after the basement moisture problem actually started.
Whatever's going on with your Herndon property, chances are we've already fixed something similar nearby this month.
A flooded Herndon 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 →Seasonal ground movement in Herndon 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 Herndon 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 Herndon basement floor at all.
Talk Drainage Options →A damp Herndon 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 Herndon property managers and business owners, scheduled around your operating hours to limit disruption.
Request a Commercial Quote →Here's exactly what Herndon customers can expect from first call to final walkthrough.
A real technician asks the right questions to understand what's likely happening at your Herndon property before anyone drives out.
We point out exactly what we find as we find it, so nothing about the diagnosis feels like a black box.
Every Herndon quote is written before work starts, not estimated verbally and adjusted later.
You get documentation of the work plus a real warranty — not just a handshake.
Plenty of companies advertise Exterior Waterproofing in Herndon — 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 — the written estimate is final.
Our crews stage locally near Herndon, which is why most emergency calls get a technician on-site in under two hours.
If a covered repair fails, we come back and fix it. That's part of the contract, not just a promise.
We'd rather earn a repeat Herndon 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 Herndon 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."
"Crew was respectful of our landscaping during the drain install and left the yard looking better than before they started."
We back our Herndon work with real, transferable warranties because we plan to be here long after the job is done, not just for the one visit.
📞 +1-866-476-1348Halo Water Proofing covers Herndon and the surrounding zip codes — from long-established neighborhoods to newer builds still settling on their foundations.
Zip codes we serve in and around Herndon: 20170 20172 22095 20171. Not sure your address is included? Call +1-866-476-1348 and we'll confirm right away.
Use the map as a guide to our Herndon service radius — a quick call confirms specifics.
One call to +1-866-476-1348 gets a licensed Herndon technician on the schedule — often same-day, 24/7 for real emergencies.
📞 Call +1-866-476-1348 — Herndon 24/7 Line