Basement Waterproofing · Hunterdon County, NJ
Basement Waterproofing in Hunterdon County, NJ
From the historic stone farmhouses of Delaware Township and Readington to the river towns of Lambertville and Clinton, Hunterdon County basements take on water for a handful of predictable reasons. RDC Waterproofing finds the real one and fixes it — with a lifetime transferable warranty. Our Berkeley Heights hub keeps a local crew within reach.
- Local Hunterdon County crews
- Free 7-day inspections
- Lifetime transferable warranty
- We fix the source, not upsell
Hunterdon County wet basement?
Water after rain, a musty smell, or a crack that weeps — tell us what you’re seeing and we’ll diagnose it free.
Get My Free InspectionBerkeley Heights hub · Serving all of Hunterdon County
Quick answer
RDC Waterproofing provides basement waterproofing, French drains, sump pumps, and foundation crack repair throughout Hunterdon County, New Jersey — including Flemington (Raritan Township), Clinton, Readington, Lambertville, Lebanon, Delaware Township, and Union Township. We diagnose the true source of the water for free and back the fix with a lifetime transferable warranty. Call (908) 569-1876.
Local conditions
Why Hunterdon County basements get wet
Hunterdon is rural, rocky, and older than almost any county in the state — and all three qualities show up in the basement. Much of the county sits on rocky ground layered with dense clay, so when rain or snowmelt saturates the soil, water has nowhere to drain and instead builds pressure against foundation walls. Springs and seasonal groundwater are common throughout the countryside, and homes near the Delaware River, the Raritan and its South Branch, and the many creeks feeding them contend with a water table that rises fast. Basement waterproofing in Hunterdon County starts with understanding both the rock and the water moving through it.
Then there are the foundations. Hunterdon is full of centuries-old stone farmhouses whose fieldstone-and-mortar walls seep steadily as the ground pushes back, along with newer homes that crack in the clay. Put it together and Hunterdon County basements take on water four main ways: hydrostatic pressure pushing groundwater and spring water up through the floor, foundation cracks in poured walls, seepage through porous stone and block, and surface water from downspouts and grading that slope toward the house. The fix has to match the cause — which is exactly what RDC’s free inspection is for.
What we install
The right waterproofing system for your Hunterdon County home
One accountable local team, matched to your foundation and your water problem.
Interior French drains
Perimeter drainage under the slab that collects water and routes it to a sump — the reliable fix for old stone farmhouses and clay-soil lots across Hunterdon County.
Sump pumps & battery backup
A dependable pump with a battery backup that keeps working when a storm knocks out power in rural Hunterdon.
Foundation crack repair
Polyurethane and epoxy injection that seals leaking poured-concrete cracks permanently.
Exterior waterproofing
Excavation, membrane, and footing drains for failing fieldstone walls or where water must be stopped outside.
Yard & exterior drainage
Grading, downspout extensions, and catch basins that move roof and hillside runoff away from the foundation.
Humidity & mold control
Dehumidification and vapor barriers to finish the job and keep Hunterdon County basement air healthy.
Towns we serve
Basement waterproofing across Hunterdon County
Local crews from our Berkeley Heights hub serve every Hunterdon County town, including:
Why Hunterdon County chooses RDC
Local, honest, and warrantied for life
- We’re local: our Berkeley Heights hub sends crews out to Flemington, Clinton, and the river towns — not a franchise from three counties away.
- 20+ years, 1,000+ 5-star reviews as the RDC brand New Jersey already trusts.
- Honest diagnosis: we find the real cause and tell you if you need less than you feared.
- Lifetime transferable warranty that stays with your home when you sell.
- Free inspections 7 days a week throughout Hunterdon County.

Hunterdon County waterproofing questions
Frequently asked questions
Do you provide free basement inspections in Hunterdon County?
Yes. RDC offers free, no-pressure inspections throughout Hunterdon County, 7 days a week. We inspect inside and out, diagnose where the water is coming from, and give you a written, fixed-price quote at no cost. Call (908) 569-1876.
How much does basement waterproofing cost in Hunterdon County?
It depends on the cause. A leaking crack sealed by injection is a few hundred dollars; a full interior French drain with a sump and battery backup for a typical Hunterdon County home runs several thousand. You get a fixed, itemized quote after the free inspection, and we recommend only what you need.
Can you waterproof an old stone farmhouse foundation?
Yes — Hunterdon has more stone farmhouses than almost anywhere in New Jersey, and we work on them often. Fieldstone-and-mortar walls seep as the rocky, clay ground pushes back, and an interior French drain with a sump relieves that pressure and keeps the floor dry while preserving the original walls.
Which Hunterdon County towns do you serve?
All of them — including Flemington, Raritan Township, Clinton, Readington, Lambertville, Lebanon, Delaware Township, Union Township, High Bridge, and Frenchtown, dispatched from our Berkeley Heights hub.
Is the warranty transferable if I sell my Hunterdon County home?
Yes. Our interior waterproofing systems carry a lifetime transferable dry-basement warranty that stays with the home — a real selling point at closing. See our guarantees.
Get your Hunterdon County basement inspected free
Honest diagnosis, a fixed-price quote, and a lifetime transferable warranty — from your local Hunterdon County team.