Arrow Tight Waterproofing doesn't sell one-size-fits-all packages. We diagnose the entry point, the pressure source, and the existing drainage condition — then we build the solution around what your specific property needs, anywhere in North Carolina, NC.
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Interior French Drain & Perimeter Drainage Systems
Interior drain tile systems collect groundwater at the footing level before it enters your living space. We saw-cut the slab perimeter, excavate to the footing, install gravel-bed perforated pipe, and tie it into a sump system with battery backup.
These systems redirect hydrostatic pressure along an engineered path straight to your sump pit and out of your property through a properly graded discharge line.
📞 Get a Free Drainage Quote →
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Exterior Foundation Coating & Drainage Board Installation
Full exterior waterproofing involves exposing your foundation to the footer depth, applying a crystalline or elastomeric waterproofing membrane, installing a geocomposite drainage mat, and placing exterior drain tile at the footing — the same specification used in new commercial construction.
This approach solves the problem at the source: water never reaches your interior wall surface.
📞 Schedule an Exterior Assessment →
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Foundation Crack Injection — Polyurethane & Epoxy Systems
We inject poured-wall cracks using a port-and-backer system: surface ports are installed at 8–12 inch intervals along the crack, the surface is sealed, and two-part polyurethane or epoxy is pumped under pressure from the lowest port up — filling the crack through its full depth.
For concrete block foundation walls showing horizontal cracking or inward bowing, we pair crack repair with carbon fiber reinforcement straps anchored at the floor and rim joist.
📞 Get a Crack Injection Estimate →
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Crawl Space Encapsulation & Vapor Barrier Systems
Crawl spaces are the most overlooked moisture source in residential structures. An unencapsulated crawl space — even one that never floods — 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.
Encapsulation turns your crawl space from an uncontrolled dirt floor into a semi-conditioned space.
📞 Schedule a Crawl Space Inspection →
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Sump Pit Construction & Dual-Pump Waterproofing Systems
A sump pump is only as reliable as its installation and backup plan. We install primary pumps — typically 1/2 to 3/4 HP cast iron submersibles with a minimum 10-year rating — alongside battery-operated backup systems that activate automatically when your primary pump fails or power goes out.
Sump pump replacement is one of the most time-sensitive repairs in waterproofing — a failed pump during a heavy rain event means an immediate flood.
📞 Get a Sump System Quote →
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Egress Window Waterproofing & Well Cover Systems
Basement window wells are one of the most underestimated water entry points in residential waterproofing. When the well drain becomes clogged or the well itself is sized incorrectly for your roof drainage load, water pools against the window frame and enters through the sill or the adjacent block wall.
Egress window installations create a significant opening in your foundation wall, and sealing the rough opening properly is as important as the window itself.
📞 Book a Window Well Assessment →
