Who We Are: A Licensed Waterproofing Crew in Potomac
We started Arrow Tight Waterproofing after years of watching homeowners get sold vague 'waterproofing packages' that never named the actual problem. Every technician we send in Potomac is licensed, background-checked, and trained to diagnose before quoting — not the other way around.
Our technicians carry thermal cameras and calibrated moisture meters to every inspection, because guessing at a foundation problem wastes your money and our reputation. That's the standard for every job in Potomac, residential or commercial.
Every technician completes ongoing training as materials and methods evolve — the polyurethane injection resin we use today isn't the same formulation the industry relied on ten years ago, and neither is our crew's training.
IICRC-certified technicians on every job, no exceptions
licensed in MD with full liability and workers' comp coverage
Thermal imaging and calibrated moisture readings before every quote
Written, transferable warranty on all completed systems
Direct-employee crews — never subcontracted out
Warning Signs
How to Tell If your Potomac property Needs Attention Now
Waiting until you see standing water means you've already missed the cheaper fix. These are the early signals our crews are trained to catch in Potomac.
01
Efflorescence on Basement Walls
We see this most often on walls that look completely dry to the touch — the salt deposit is evidence of past water movement, not current dampness.
02
A Musty Smell That Won't Go Away
Odor alone rarely tells you the source, but it's a reliable sign something needs a real moisture inspection rather than an air freshener.
03
Cracks Along the Wall-Floor Joint
This is the exact spot our technicians check first on every basement inspection, because it tells us more about the pressure situation than almost anywhere else.
04
A Sump Pump That Never Stops Running
A sump that runs nonstop during rain is a system working past its design limit, not a system doing its job well.
05
Bowing or Leaning Foundation Walls
Measuring wall deflection with a level is one of the first things we do on any inspection where bowing is suspected, since the degree of lean changes the recommended fix.
06
Rust Stains Bleeding Through Concrete
This sign often gets dismissed as cosmetic, but it points to water reaching structural steel, which is a different severity than surface dampness.
07
Peeling Paint or Soft Drywall Near the Floor
If the bottom foot of drywall in a below-grade room feels soft or the paint is bubbling, that's usually vapor transmission through the wall, not a plumbing leak.
08
Cold, Damp Floors Above a Crawl Space
Homeowners often replace or service their HVAC system first, only to find the actual cause was ground moisture migrating up through an unsealed crawl space.
Core Services
Our Core Waterproofing Services in Potomac
From emergency response to full commercial systems, here's the range of Waterproofing work our crews handle in Potomac.
01
Emergency Water Intrusion Response
Active flooding doesn't wait for business hours, and neither do we — our emergency line in Potomac is answered live, 24 hours a day, with crews dispatched to stop the immediate entry point first.
We carry the equipment needed to control an active situation immediately, then scope the permanent fix once the emergency is under control.
For homeowners in Potomac, we install interior drain tile, sump systems, and crawl space encapsulation sized to your property's actual groundwater load — not a one-size package.
We size every residential system — pump horsepower, pipe diameter, gravel bed depth — to your specific property rather than a generic template.
For property managers in Potomac, we coordinate around occupied units and business hours, minimizing disruption while still delivering a full waterproofing scope.
We provide the same written, itemized proposals for commercial clients as residential ones, with the added documentation many property managers need for ownership or insurance records.
When a foundation issue is structural rather than purely a water problem, we bring in the crack-classification and reinforcement expertise that basic waterproofing crews don't carry.
Every structural repair is documented with before-and-after photos and moisture readings as part of your warranty file.
Failed or undersized sump pumps are one of the most common reasons a previously working system suddenly floods, and we treat pump sizing as its own diagnostic step, not an afterthought to drainage work.
Battery backup and monitored alarm options are available on every pump we install, so a power outage during a storm doesn't leave the system unprotected.
Why Property Owners in Potomac Choose Arrow Tight Waterproofing
These aren't marketing lines — they're the specific practices that separate a repair that lasts from one that doesn't.
Upfront, Itemized Pricing
Pricing surprises are the single biggest complaint we hear about competitors, so we built our proposal process specifically to eliminate them.
Fast Local Dispatch
Crews are staged regionally in Potomac specifically to keep response times short — most inspections are scheduled within days, and emergencies get same-day priority.
Satisfaction Backed in Writing
Every completed system comes with a written, transferable warranty — not a verbal promise that's hard to enforce two years later.
Commercial-Grade Materials, Every Time
Our sump pumps are cast iron, our drain tile is schedule 40 PVC, and our membranes are rated for sustained hydrostatic pressure — not hardware-store equivalents.
Diagnosis Before Recommendation
Our technicians document the actual water path and pressure source before recommending a fix, so you're paying for the right repair the first time.
Our Process
From Your Call to a Documented Fix
01
Call or Request an Inspection
There's no charge for the call or the inspection that follows, so there's no downside to getting a second opinion even if you've already spoken with another contractor.
02
On-Site Diagnosis
Expect the inspection itself to take 45 to 90 minutes depending on property size and how many areas need checking.
03
Written, Fixed-Price Proposal
You receive an itemized proposal before any work begins — materials, labor, and scope laid out in writing, not estimated verbally.
04
Installation & Warranty Documentation
We also walk you through basic maintenance for whatever was installed, so you know what to check twice a year to keep the system performing as designed.
Get a Free Inspection Before It Spreads
Free on-site inspection, written estimate, no obligation. We answer 24/7.
"Had a cove joint leak that two other companies just patched without explaining why it kept happening. Arrow Tight Waterproofing's technician showed me the moisture readings and traced it to hydrostatic pressure, then installed drain tile that's held through every storm since.Exactly the level of service we expected."
R. — Homeowner, Potomac
★★★★★
"Called at 11 PM with active water coming in during a storm. Live person answered immediately, crew was on-site within the hour, and they had a temporary pump running before starting the real diagnosis.That's the kind of fix that actually holds up."
K. — Emergency Client, Potomac
★★★★★
"We manage a small multi-unit building and needed the work scheduled around tenants. They coordinated everything cleanly and the commercial-grade membrane they used has zero callbacks two years later.Would recommend them without hesitation."
T. — Property Manager, Potomac
★★★★★
"Appreciated that they didn't just sell us a package. The inspection actually found the real problem — a bowing block wall — and the carbon fiber reinforcement plus crack injection fixed it properly instead of just sealing the surface.Would recommend them without hesitation."
M. — Homeowner, Potomac
★★★★★
"Sump pump had been cycling nonstop for weeks before we called. They correctly diagnosed it as undersized for our actual water table and upgraded it — no more constant cycling, and it's kept up with two heavy storms since.Exactly the level of service we expected."
D. — Homeowner, Potomac
★★★★★
"We're a small property management company and needed drainage work done across three units without disrupting tenants. Arrow Tight Waterproofing scheduled around occupied hours, communicated clearly with residents, and the itemized invoice matched the original proposal exactly.That's the kind of fix that actually holds up."
L. — Property Manager, Potomac
FAQ
What Potomac, MD Customers Ask Us Most
Response time depends on urgency — active flooding is treated as top priority, while non-urgent inspections are usually booked within the week.
We never bill hourly or open-ended. The fixed price you approve in writing is the price on the final invoice, barring a documented scope change you sign off on first.
Emergency response covers active flooding, sudden sump failure, and burst pipe water intrusion — we stabilize the situation first, then scope the permanent repair.
If interior fixes haven't held or the wall shows active exterior deterioration, exterior waterproofing is usually the better long-term answer — we'll tell you honestly which applies.
Gradual groundwater seepage is typically treated as a maintenance issue and excluded, while sudden events like burst pipes are often covered — check your specific policy language.
Timeline depends entirely on scope — we give you a written schedule estimate as part of the proposal so there's no ambiguity going in.
Always an in-person inspection — we don't quote sight-unseen, because an accurate scope requires actually seeing the moisture pattern and access conditions.
Yes — every completed system includes a written warranty that's transferable if you sell the property, not just a verbal assurance.
Coverage extends across Potomac — call +1-866-476-1348 to confirm your specific address, though it's almost certainly within our service area.
For the initial inspection, yes — we need access to the affected area and it helps to walk through what we're seeing together, though the visit is usually under an hour.
A patch treats the visible symptom — a caulked crack, a coat of sealant — without addressing why water found that path in the first place, so the same issue often resurfaces nearby.
Some clients ask us to speak directly with their adjuster about scope and materials, and we're glad to when it's useful for a claim already in progress.
Service Area
Our Service Footprint, in Potomac
Arrow Tight Waterproofing provides Waterproofing services in Potomac, with crews staged regionally to keep response times reasonable whether you're in a dense metro area or further out.
Same-day or next-day scheduling is typically available for non-emergency inspections, with active flooding calls prioritized ahead of the standard queue.
Whether your property in Potomac has a finished basement, an unfinished crawl space, or a slab foundation, our crews carry the equipment and training to assess and quote all three foundation types on the same visit.
New service areas are added as we expand our regional crew staging, so if you were told we didn't cover your address in the past, it's worth checking again.
