Certified Waterproofing crews in Harrisburg, backed by a written warranty and same-day emergency dispatch.
📞 Speak With a SpecialistWe 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 Harrisburg 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 Harrisburg, residential or commercial.
We keep detailed job records for every property in Harrisburg we've serviced, which means if you call back in three years with a question about your system, we can pull the exact specs of what was installed rather than starting from scratch.

Most foundation failures don't start as floods — they start small, and they're easy to miss until the damage compounds. Here's what our technicians look for on every inspection in Harrisburg.
White powdery buildup on a foundation wall means water has been passing through it, even if the surface looks dry today.
If a dehumidifier only masks the smell instead of fixing it, there's an active moisture source somewhere in the structure.
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.
A sump that runs nonstop during rain is a system working past its design limit, not a system doing its job well.
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.
This sign often gets dismissed as cosmetic, but it points to water reaching structural steel, which is a different severity than surface dampness.
Paint and drywall absorb moisture vapor before liquid water ever becomes visible, so bubbling or soft spots near the baseboard are an early-stage signal, not a late one.
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.
From emergency response to full commercial systems, here's the range of Waterproofing work our crews handle in Harrisburg.

Active flooding doesn't wait for business hours, and neither do we — our emergency line in Harrisburg 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.
📞 Get a Free Quote →For homeowners in Harrisburg, 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.
📞 Get a Free Quote →Commercial foundations in Harrisburg carry different risk than residential ones — larger footprints, tenant liability, and often tighter access — and our crews scope and schedule around that.
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.
📞 Get a Free Quote →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.
📞 Get a Free Quote →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.
📞 Get a Free Quote →These aren't marketing lines — they're the specific practices that separate a repair that lasts from one that doesn't.
We quote a fixed price after a real inspection, not a phone estimate, and we get written sign-off before any change to that scope.
We don't run a single centralized dispatch queue; regional staging means the crew reaching you in Harrisburg isn't driving hours to get there.
Every completed system comes with a written, transferable warranty — not a verbal promise that's hard to enforce two years later.
We install the same membrane specification, pipe schedule, and pump ratings on residential jobs that commercial contracts require — never a downgraded consumer-grade substitute.
We inspect with thermal imaging and moisture meters before quoting anything, because a scope built on a guess is a scope that often needs redoing.
Call +1-866-476-1348 and describe the issue. We route the right technician for your specific situation rather than a generalist.
We document every visible entry point and pressure indicator during the visit — this is what the eventual proposal is built around.
If the proposal includes options — say, interior versus exterior drainage — we'll walk through the tradeoffs so you're deciding with full information.
Once the system is installed and tested, you get warranty paperwork that transfers with the property if you ever sell.
Our crews are ready to assess your property today — call now.
📞 Call +1-866-476-1348 Now
"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.Would recommend them without hesitation."
"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.Exactly the level of service we expected."
"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."
"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."
"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.That's the kind of fix that actually holds up."
"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.Exactly the level of service we expected."
Arrow Tight Waterproofing provides Waterproofing services in Harrisburg, 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.
Coverage isn't limited to single-family homes — we service condos, multi-unit rentals, and small commercial buildings in Harrisburg using the same diagnostic-first process regardless of property type.
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.
