From basement flooding to foundation seepage, Arrow Tight Waterproofing has protected properties across Vancouver, WA with industrial-grade waterproofing systems. Call now β crews are standing by 24/7.


Arrow Tight Waterproofing was built by tradespeople who got tired of seeing homeowners in Vancouver, WA get sold band-aid fixes. We specialize in permanent waterproofing solutions β interior drainage systems, exterior membrane applications, crack injection, and crawl space encapsulation β using commercial-grade materials that hold up decade after decade.
We're not a general contractor who does waterproofing on the side. Every job we take β whether it's a sump system installation, a foundation crack repair, or full exterior waterproofing β is handled by specialists. No subcontracting, no handoffs, no surprises on the invoice.
Water damage rarely announces itself dramatically at first. It starts quiet β a damp smell, a hairline crack, a white powder on the concrete. By the time it's obvious, you've lost weeks of containment. Here's what to catch early.
That white chalky residue isn't cosmetic β it's mineral salt deposited by water that has already penetrated your foundation wall.
Vertical cracks are often settling. Horizontal cracks in block foundations indicate lateral soil pressure β a structural emergency, not just a cosmetic issue.
Mold and mildew require only 24β48 hours of elevated moisture to colonize. A musty smell after rain means your vapor barrier has failed or doesn't exist.
The cove joint β where the floor slab meets the foundation wall β is the most common water entry point in basement systems. Staining or pooling there means hydrostatic pressure is actively pushing in.
Paint and drywall absorb moisture vapor before you can see liquid water. Bubbling or peeling in a below-grade space is almost always a moisture problem, not a paint adhesion failure.
A sump pump that cycles every few minutes β or runs non-stop β is managing a groundwater situation your current system wasn't designed for. It will burn out, and the next flood won't wait for a replacement.
Iron in your concrete doesn't rust unless water penetration has reached it. Rust staining is a reliable indicator that your foundation waterproofing envelope has been breached.
Floor slab cracks that show moisture after heavy rain are almost always driven by sub-slab water pressure. This typically requires sub-slab drainage and sump installation to relieve the pressure permanently.
Every moisture problem has a different source. We identify yours specifically before we quote anything β then we deploy the right system, not the most expensive one.
When hydrostatic pressure is the primary culprit, the most effective long-term solution is a properly engineered interior drainage system. We install sub-slab perforated drain tile around the perimeter of your basement β capturing water before it can rise above slab level β and route it to a sump pit equipped with a dual-pump configuration.
Our sub-slab drainage systems use schedule 40 perforated PVC pipe in a stone bed, designed to handle high-volume water tables.
π Get a Free Drainage Quote βExterior waterproofing is the most comprehensive solution available β stopping water before it contacts your foundation wall. We excavate to the footing, apply a rubberized polymer membrane to the exterior foundation face, install dimple-mat drainage board, and backfill with clean crushed stone to redirect surface water away from the structure.
We use SilkOate, UMARK, and other commercial-grade membrane systems β not the paint-on damp-proofing that deteriorates within a few years.
π Schedule an Exterior Assessment βWe inject poured-wall cracks using a port-and-backer system: surface ports are installed at 8β12 inch intervals along the crack, the surface is sealed with hydraulic cement, and two-part polyurethane or epoxy is pumped under pressure from the lowest port up β filling the crack through its full depth.
Block wall repointing involves removing deteriorated mortar joints to a minimum depth of 3/4 inch and repacking with waterproof hydraulic mortar.
π Get a Crack Injection Estimate βCrawl spaces are the most overlooked moisture source in residential structures. An unencapsulated crawl space β even one that "never floods" β pumps humid air into your living area through the stack effect, raising indoor humidity, feeding mold growth in floor joists, and accelerating wood rot in your subfloor structure. Full encapsulation seals that air pathway permanently.
Encapsulation turns your crawl space from an uncontrolled dirt floor into a semi-conditioned space.
π Schedule a Crawl Space Inspection βA sump pump is only as reliable as its installation and backup plan. We install primary pumps β typically 1/2 to 3/4 HP cast iron submersibles with a minimum 10-year rating β alongside battery-operated backup systems that activate automatically when your primary pump fails or power goes out.
For finished basements and properties with high groundwater, we recommend a dual-pump system: a primary submersible at normal operating level and a pedestal backup set two inches higher.
π Get a Sump System Quote βWe excavate and regrade window wells to the proper dimension, install a gravel drain bed with a perforated pipe tied into your perimeter drainage system, and apply waterproof flashing around the window frame β stopping the entry point at the source instead of managing it inside.
Window well covers are a maintenance measure, not a waterproofing solution β but paired with proper drainage installation.
π Book a Window Well Assessment βThere are a lot of waterproofing companies in WA. Here's what separates the ones who fix the problem from the ones who fix the symptom β and why Arrow Tight Waterproofing consistently lands on the right side of that line.
Every estimate begins with a physical inspection of every visible moisture entry point.
The waterproofing membrane we apply to your foundation is the same specification used on commercial buildings in WA β a 60-mil rubber barrier.
Every technician on our crews is a direct employee of Arrow Tight Waterproofing, insured under our policy, and trained to our installation standards.
Our proposals are itemized: materials, labor, drainage footage, discharge line run, and any accessory items listed separately.
We put our warranty in writing, registered to your property address, with a clear scope of what's covered and the process for filing a service claim.
Our emergency dispatch protocol means a technician assesses the situation within 60 minutes of your call in most of our WA service territory.
Reach our live dispatch team at any hour. We'll take your address, ask about what you're seeing, and schedule a free on-site inspection β typically within 24 hours or same-day for emergencies.
A certified technician visits your property, conducts a full moisture inspection including thermal imaging and meter readings, identifies every active entry point, and documents the drainage pattern. No high-pressure sales tactics β just data.
We present a written, itemized proposal on-site or within 24 hours of the inspection. Fixed price, fixed scope, no open-ended line items. You review it, ask questions, and authorize in writing before any work begins.
{Our crew completes the installation to the approved scope. On completion, we conduct a post-installation moisture check, walk you through the system, and provide the written warranty documents registered to your property address.|Installation is completed by our direct-employee crew. We clean up the jobsite, verify pump function and discharge routing, take post-install moisture readings, and hand you the warranty documentation before we leave.}
Our crews are standing by to assess your Vancouver property. Free inspection, written estimate, no obligation. Call now β we answer 24/7.
π Call +1-866-476-1348 β Free Estimate"The crew showed up within 3 hours of my call at 9 PM on a Tuesday. I had water coming in through a crack in my poured wall at the floor joint β had been watching it for two seasons and finally called when it started spreading. They installed an interior drain system along two walls and a new sump pit. The work took two days. I've had three major rain events since then β completely dry. Worth every dollar.Highly recommend the whole crew."
"I've had two other companies look at my foundation crack before these guys. Both gave me vague proposals and neither one could tell me exactly why I had water or where it was coming in. Arrow Tight Waterproofing came out, brought a thermal camera, and showed me on screen exactly where the moisture was concentrated. The polyurethane injection they did on the crack has held for 18 months now with zero seepage. That's the most competent inspection I've ever gotten from a contractor.I'd recommend them to anyone dealing with the same problem."
"I bought a house in Vancouver, WA knowing it had a moisture issue in the crawl space β previous owners had put down a thin plastic sheet that was doing nothing. Arrow Tight Waterproofing encapsulated the entire crawl space with a 20-mil liner, sealed the vents, and installed a dehumidifier. Within two weeks my downstairs floors stopped feeling cold and damp and the musty smell completely disappeared. The technician walked me through every step before starting. No surprises on the invoice.That kind of result speaks for itself."
"We had a window well that flooded every time we got more than an inch of rain. The well was filling up and water was coming straight in through the window sill joint. The fix was a regraded well with a perforated pipe tied into our existing interior drain. The whole job took one day. The crew was professional, cleaned up completely, and the well has handled every storm since without an issue.I'd recommend them to anyone dealing with the same problem."
"Called Arrow Tight Waterproofing after my old sump pump failed during a storm and I had 4 inches of water on my basement floor. They answered at midnight, arrived within an hour, and had a temporary pump running within 20 minutes of showing up. Once the emergency was managed, they walked me through a permanent drainage system upgrade. That was 8 months ago β I've had 6 rain events including one significant storm and the basement has stayed dry.Highly recommend the whole crew."
"As a commercial property manager overseeing several buildings in Vancouver, WA, I've worked with a lot of waterproofing contractors. Arrow Tight Waterproofing is the first one that showed up to the initial walk with a written inspection checklist and completed it on-site before quoting. Every other contractor just eyeballed it and sent a number. Their exterior membrane on the building we had done 3 years ago is holding perfectly with zero callbacks.That kind of result speaks for itself."

We've built our service infrastructure in WA around regional crew staging rather than a single central office β which means your technician is driving 20 minutes to your property, not two hours. Coverage covers urban cores, suburban communities, and rural properties throughout Vancouver, WA.
For property owners in Vancouver and the surrounding areas, same-day or next-day appointments are typically available. Emergency calls β active flooding, sump pump failure, sudden seepage β receive priority routing and a 60-minute response target in most of our coverage footprint.
π Call Now to Check Availability in Vancouver