Arrow Tight Waterproofing doesn't sell one-size-fits-all waterproofing packages. We diagnose the entry point, the pressure source, and the existing drainage condition โ then we build the solution around what your specific property needs.
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Interior Drain Tile & Perimeter Channel Systems
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 โ capturing water before it can rise above slab level โ and route it to a sump pit equipped with a dual-pump configuration.
These systems don't fight hydrostatic pressure โ they redirect it.
๐ Get a Free Drainage Quote โ
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Exterior Foundation Coating & Drainage Board Installation
Exterior waterproofing is the most comprehensive solution available โ 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 โ not the paint-on damp-proofing that deteriorates within a few years.
๐ Schedule an Exterior Assessment โ
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Poured-Wall Crack Injection & Block Wall Repointing
We inject poured-wall cracks using a port-and-backer system: surface ports are installed at 8โ12 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 โ 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.
๐ Get a Crack Injection Estimate โ
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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 โ even one that "never floods" โ 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.
๐ Schedule a Crawl Space Inspection โ
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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 โ typically 1/2 to 3/4 HP cast iron submersibles with a minimum 10-year rating โ 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.
๐ Get a Sump System Quote โ
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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, the window-to-frame joint, or the block wall directly adjacent.
Egress window installations create a significant opening in your foundation wall, and sealing the rough opening properly is as important as the window itself.
๐ Book a Window Well Assessment โ
