Certified Waterproofing crews in Harrisburg, backed by a written warranty and same-day emergency dispatch.
📞 Call Now — Free EstimateArrow Tight Waterproofing exists because too many property owners in Harrisburg were getting patchwork fixes instead of real diagnosis. Our crews are licensed in PA, carry full liability coverage, and are trained to find the actual water path before recommending anything.
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.
That chalky white residue on concrete or block isn't dirt — it's mineral salt left behind after water has already migrated through the wall.
Persistent musty odor almost always traces back to elevated humidity or an active leak feeding mold growth somewhere you can't see.
Cracking where your floor meets the foundation wall is rarely cosmetic; it's typically the first visible sign of pressure building against the wall.
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.
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.
Floors that stay cold and slightly damp-feeling even with the heat running usually trace back to an open or failed vapor barrier beneath the house, not an HVAC problem.
We don't sell a single fixed package — every property in Harrisburg gets a scope built around what our inspection actually finds.

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.
Every emergency truck carries submersible pumps, temporary sump units, and crack-sealing materials, so most active leaks can be stabilized on the first visit.
📞 Get a Free Quote →Residential waterproofing in Harrisburg covers everything from a single crack injection to a full-perimeter drainage retrofit, scoped after a real inspection.
Every residential install includes post-job moisture verification, so you have documented proof the system is working, not just our word for it.
📞 Get a Free Quote →For property managers in Harrisburg, 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.
📞 Get a Free Quote →Beyond drainage, our crews handle foundation crack injection, carbon fiber wall reinforcement, and structural crack classification for properties in Harrisburg showing signs of settlement or lateral pressure.
We're upfront when a problem needs structural engineering input beyond what waterproofing alone can fix, rather than selling a repair that won't hold.
📞 Get a Free Quote →A waterproofing system is only as reliable as the pump moving water out of it — we size, install, and upgrade sump systems in Harrisburg to match actual groundwater volume rather than defaulting to whatever's in stock.
We also correct discharge line routing and grading as part of any pump job, since a poorly graded discharge line often just recirculates water back toward the foundation.
📞 Get a Free Quote →Every waterproofing company claims to be the best. Here's what we actually do differently, and why it holds up under scrutiny.
The number on your proposal is the number on your invoice — materials, labor, and scope are itemized before any work begins, with no surprise line items added mid-job.
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.
If something about the completed work doesn't meet the scope we agreed to, we return and correct it under the warranty terms, in writing.
Material selection isn't where we compete on price — we'd rather lose a bid than install something we know will fail in a few years.
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.
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.
Review the proposal at your own pace; we don't pressure same-visit sign-off, though we can often start within days once approved.
Once the system is installed and tested, you get warranty paperwork that transfers with the property if you ever sell.
Free on-site inspection, written estimate, no obligation. We answer 24/7.
📞 Schedule Today: +1-866-476-1348
"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.That's the kind of fix that actually holds up."
"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.Exactly the level of service we expected."
"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.Would recommend them without hesitation."
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.
Call +1-866-476-1348 to confirm coverage for your specific address — given our regional staging in Harrisburg, it's very likely within our service area.
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.
