Skip to content
Waterproofing ServicesBasement to roof, Jersey City 24/7 line(201) 578-5199

Jersey City waterproofing · basement to roof · answered 24/7

Wet basements, leaking walls and roof decks, sealed for good

Water in a building almost never enters where it shows up. We trace it from the roof, the walls or the ground, stop it where it gets in, and give it a planned way out with drains and pumps that keep working through the next storm.

  • Phones answered 24/7
  • Office at 218 Newark Avenue
  • Basements, walls and roofs
Technician installing drainage membrane on a brick basement wall
One inch of rain on a 1,000 sq ft roofabout 623 gallonsEvery gallon ends up in a drain or against your foundation.

Quick answer

For a wet basement, foundation crack, sewer backup, leaking wall, terrace or flat roof in Jersey City, call (201) 578-5199 at any hour. We waterproof rowhouses, brownstones, frame houses, walk-ups and condo buildings from the basement up, working from an office on Newark Avenue and a head office in Carteret, which is where the name Waterproofing Services Carteret comes from.

Membranes, sealers, pumps and dehumidifiers we install come from makers such as

SikaTremcoHenryCarlisleXypexKrytonZoellerLiberty PumpsWayneAprilaireSanta FeKarnak
Everything that keeps water out

Waterproofing services from the footing to the parapet

Water comes in from the ground under pressure, through masonry in wind-driven rain, and from the roof down. We handle every one of those paths, so the fix you pay for is the one that actually ends the leak.

Sump pumps & drainage

Sump pumps, backups, backwater valves and drains that move water away from the house.

Walls, terraces & decks

Masonry walls, windows, balconies, terraces, roof decks and parapets kept watertight.

Roof waterproofing

Coatings, flat-roof leak repair, ponding, flashing, skylights and chimneys.

Commercial & inspections

Garages, elevator pits, new construction and whole-building water inspections.

Rain math for your foundation

How much roof water lands next to your basement?

Every drop that falls on your roof is collected by gutters and leaders, and on most Jersey City houses those leaders empty a few feet from the foundation. That puts the whole roof's worth of water right where the basement wall is weakest.

Slide the controls to see what one storm sends down your leaders. The numbers use plain physics: one inch of rain on 1,000 square feet is about 623 gallons, and water weighs about 8.34 pounds per gallon. That's why underground leader drains and grading the yard away from the house often fix a wet basement for far less than people expect.

If the result surprises you, watch where your leaders discharge in the next heavy rain. Water pooling against the house is worth a call.

Storm runoff calculator

623gallons down your leaders
5,196pounds of water to carry away
125five-gallon buckets' worth

A heavy summer storm can drop an inch or more in an hour. Planning figures only; your gutters, leaders and grading decide where it goes.

Underground leader pipe laid from a downspout
Jersey City buildings

Every building here takes on water its own way

Jersey City packs nineteenth-century rowhouses on filled ground, frame houses on the Palisades rock, pre-war apartment buildings and glass towers into a few square miles. Each leaks differently, and each needs a different fix.

Brownstone rowhouses with sunken front areaways

Brownstones and brick rowhouses

Stone and brick foundations with century-old lime mortar, sunken front areaways, shared party walls and roof decks up top. Water usually finds the mortar joints and the areaway drain first.

Stone foundation waterproofing
Two and three family frame houses in the Heights

Two- and three-family frame houses

Poured or block basements, leaders dumping at the foundation, crawl spaces under rear additions and window wells that fill in a downpour.

Basement waterproofing
Pre-war walk-up with a basement entrance below the street

Pre-war walk-ups

Deep basements under city sidewalks, floor drains tied to combined sewers, and boiler rooms that flood when the street backs up.

Backwater valves
Condo tower garage entrance and terraces on the waterfront

Condo and rental towers

Below-grade garages, elevator pits, terraces over living space and amenity decks, handled with managers and boards and documented for the next meeting.

Commercial waterproofing
Before the next storm

Signs water is getting into your building

Most of these show up long before a flood. Catch them early and the fix is usually smaller and cheaper.

Water at the floor edge

A wet line where the floor meets the wall after rain is groundwater pushing through the cove joint under pressure.

White powder on walls

Efflorescence is salt left behind as water moves through brick, block or concrete. The wall is passing water even if it looks dry.

Musty smell downstairs

A damp, earthy smell means humidity is high enough for mold and rot, often from a crawl space or slow wall seepage.

Sump pump running nonstop

A pump that never rests, or never runs at all, is close to failing. Most fail during the storm you needed them for.

Gurgling floor drains

Drains that gurgle or smell in heavy rain warn of a sewer backup. A backwater valve stops the next one.

Stains under windows and terraces

Damp plaster below a window, balcony door or roof deck points to failed sealant or flashing above, not a plumbing leak.

How a call becomes a dry building

What happens after you phone us

  1. Step 1

    You call, we listen

    Tell us where the water shows and when. If it's flooding now, we talk you through staying safe first.

  2. Step 2

    We trace the source

    Moisture readings, water testing in sections and a look outside at leaders, grading and walls. No guessing.

  3. Step 3

    Stop it tonight if needed

    During a storm we pump out, clear drains or set temporary protection so the damage stops spreading.

  4. Step 4

    Fix it properly

    Drains, sump systems, crack injection, masonry or membrane work, with a typical price range before work starts.

  5. Step 5

    Show you the work

    Photos of what we found and what we did, so you have a record for the building file, buyer or board.

Where our crews work

Jersey City first, then the rest of Hudson County and beyond

Our Jersey City office on Newark Avenue covers every neighborhood in the city. Calls from Essex, Union, Middlesex and Bergen County towns are handled from there and from our head office in Carteret. See how we cover Jersey City.

Nearby towns

Check your ZIP code

Type your ZIP to see whether it sits in our regular coverage. Any ZIP not listed, call and ask.

Plan before you call

Typical waterproofing costs, and guides written for owners

A whole-basement interior drain and sump system in Jersey City typically runs $3,900 to $14,800; a single foundation crack injection is usually $485 to $1,180. Ranges, not quotes: access, foundation type and how far water travels move every number. Open the waterproofing cost guide for all 39 services.

All owner guides

Questions Jersey City owners ask us first

Do you answer the phone at night when a basement is flooding?

Yes. (201) 578-5199 is answered 24/7, including holidays. Tell whoever picks up where the water is coming from and how deep it is, and we will talk you through staying safe around the electric panel and appliances while a crew and pump are lined up.

What parts of a building do you waterproof?

All of it: basements and foundations, sump pumps and drains, sewer backup protection, crawl spaces, brick walls, windows, balconies, terraces, roof decks, parapets and flat roofs. Water usually travels between those areas, so we look at the whole path, not just the wet spot.

Is interior or exterior basement waterproofing better for a Jersey City house?

On attached rowhouses the outside of the foundation is often unreachable, so an interior drain and sump is usually the practical fix. Detached houses and new construction can take an exterior membrane. Our interior versus exterior guide walks through the trade-offs.

Can you stop sewer water from backing up into my basement?

In many Jersey City and Hoboken basements a backwater valve on the sewer line is the answer, because the streets share combined sewers that surcharge in heavy rain. We check the plumbing layout and coordinate any permit or plumbing sign-off the job needs.

Which areas outside Jersey City do you cover?

The rest of Hudson County, including Hoboken, Bayonne and Union City, plus nearby towns in Essex, Union, Middlesex and Bergen counties. Our head office is in Carteret, so the Rahway and Woodbridge side is covered from there.

Talk to a waterproofer

One number, answered day and night

(201) 578-5199

We're a phone-first waterproofing company. Call, describe what you're seeing, and you'll speak with someone who knows basements, walls and roofs, not a script.

Hours
24 hours a day, 7 days a week
Jersey City office
218 Newark Avenue, Jersey City, NJ 07302
Head office
83 Willow St, Carteret, NJ 07008
Coverage
Jersey City, Hudson County and nearby towns in Essex, Union, Middlesex and Bergen

The map loads from Google only when you ask for it.

Call (201) 578-5199 · 24/7