Trenton Foundation Repair
Trenton & Mercer County, NJ
Basement waterproofing Free inspections

Basement waterproofing in Trenton, NJ

A basement that floods every storm or weeps at the walls is telling you water has a way in. We find where it's coming from and shut it down with interior drainage, a sump system, and sealing sized to your home.

Interior & exterior systems Warranty in writing
Where the water comes from

Dry it out at the source.

A wet basement is almost never about one leak. Water builds up in the soil around the foundation, and once there's enough pressure it finds the weak points: the joint where the wall meets the floor, hairline cracks, and porous block. Older Trenton homes and the ones sitting lower toward the Delaware tend to see it worst.

We start by figuring out how the water is getting in and how much you're dealing with. Then we build a system to match. For most homes that means catching the water inside with a perimeter drain and moving it out with a sump pump, backed up by sealing and, when the grading outside is the culprit, exterior drainage.

Interior French drainSump systemsWall sealingVapor barrierExterior drainage
Signs water is getting in
  • Water on the floor after a heavy rain or snowmelt
  • Damp walls or a chalky white residue on the block
  • A musty smell or high humidity you can feel
  • Puddles collecting where the wall meets the floor
  • Rusting appliances or warped items stored down there
What's included

A system, not a patch

Interior perimeter drainA channel around the basement floor that collects water before it reaches the room and carries it to the sump.
Sump pump systemA pump and pit sized to your home, with a battery backup option so it keeps working when the power drops in a storm.
Wall sealing & vapor barrierSealing the cracks and lining the walls to block seepage and keep humidity out of the finished space.
Exterior drainageWhen the real problem is grading or downspouts, we move water away from the house before it ever reaches the wall.
Good to know

Waterproofing questions

Do I need interior or exterior waterproofing?
It depends on where and how the water gets in. Interior drainage with a sump system handles most cases and is less disruptive; exterior work is the answer when the outside grading and drainage are the real problem. We inspect first and recommend the one that actually fits your home, not a one-size package.
Will waterproofing fix a musty smell or mold?
Getting the water and humidity under control removes what mold and musty odors feed on, so drying the basement is the first step. If there's existing mold, we'll point you toward proper remediation before we finish out the space.
How disruptive is the work?
An interior drain means opening a channel around the basement perimeter, so there's some dust and noise for a few days, but it's done from inside and your yard stays intact. We protect the space, clean up daily, and give you a clear timeline up front.
Is waterproofing guaranteed?
Yes. Our waterproofing systems come with a written warranty. We go over exactly what's covered with your estimate.
Related services

Other foundation work we handle

Take the basement back

Find out where the water's coming in, free.

We'll trace the leak, size the right system, and give you the cost in writing before you commit to anything.

(609) 596-1420