Somerset County · New Jersey
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Basement Waterproofing in Somerset County, NJ

A. Pennacchi & Sons finds where water reaches your Somerset County basement, outside and in, and builds the waterproofing around that cause.

1947Founded4Generations(609) 394-7354NJ Office
Basement Waterproofing in Somerset County, NJ

The Water Often Starts Outside

Water in a basement often starts outside it. Grading that slopes toward the house, a clogged gutter or a downspout dumping at the foundation can all send water to the wall, and an interior fix cannot keep up if the source stays active. Patching one crack leaves the other paths open.

A. Pennacchi & Sons looks for that source first. We inspect the basement and the ground around it, then build the repair around what we find. Four generations of the Pennacchi family have worked in masonry and waterproofing since 1947, out of our Hamilton, NJ shop. Call (609) 394-7354 or request an estimate.

What Drives The Cost Of Basement Waterproofing In Somerset County

Cost depends on how much water is coming in, where it enters and what the foundation walls are made of. An interior drain system costs less than excavating outside the house, and some basements need both. Wall cracks, a failing window well or a sump pump with battery backup each change the scope, and older stone walls need a different method than concrete.

A. Pennacchi & Sons prices each project after an on-site inspection and sends a written proposal with one total.

Signs Your Basement Needs Attention

  • Water along the base of the walls after heavy rain.
  • A musty smell, even when the floor looks dry.
  • White powder on the walls, called efflorescence, which means water is moving through the masonry.
  • New cracks in the slab or walls.
  • A dehumidifier that runs nonstop.

Basement Waterproofing Services We Provide

  • Interior waterproofing: a trench along the slab, drain pipe set in washed stone, and a sump that pumps the water out.
  • Exterior waterproofing: we excavate the wall, seal it with a membrane, and set drainage board and pipe before backfill.
  • Sump pump installation, with a battery backup available for power outages.
  • Foundation crack repair: we inject and seal wall cracks and patch slab cracks where water gets in.
  • Window well drainage: we seal the well and correct its drainage so water moves away from the wall.
  • Below and above grade waterproofing for commercial and multi-unit buildings: foundations below grade, plus parapets, terraces and parking decks above it.

Our Waterproofing Process

  1. Step 01

    1. Request An Estimate

    Call or use the form, tell us what you saw, and we schedule a site visit.

  2. Step 02

    2. Site Visit

    A Pennacchi craftsman looks over the basement, the foundation and the grounds to find how water gets in.

  3. Step 03

    3. Written Proposal

    You get the scope and one total in writing.

  4. Step 04

    4. Installation

    Our crew installs the system and restores any masonry in the scope.

See the full basement waterproofing process.

Waterproofing In Somerset County Towns

A. Pennacchi & Sons waterproofs basements in Somerville, Bernardsville and Basking Ridge, and closer to the shop in Ewing. A hairline wall crack gets the same inspection as a full exterior dig.

Finished work is in the project gallery. For everything else we do in the county, see all Somerset County services.

Why Somerset County Homeowners Choose Us

  • Four generations of the Pennacchi family, established 1947.
  • If sealing one crack stops the leak, you get a quote for that crack and nothing larger.
  • One total and the scope behind it, in writing, explained before work starts.
  • New Jersey Home Improvement Contractor 13VH01138400, licensed, insured and bonded.

Learn more about A. Pennacchi & Sons.

Customer Reviews

A. Pennacchi & Sons has a 4.5-star rating from 30 Google reviews. Read them on Google or see all testimonials.

Other Services Across Somerset County

View all services.

Get Your Somerset County Waterproofing Proposal

Book a visit before the next heavy rain adds to the damage. Call A. Pennacchi & Sons at (609) 394-7354 and we will inspect your Somerset County basement and explain what the repair involves, with the scope and total in writing.

Frequently Asked Questions

Can I rely on a sump pump alone?
Rarely. A sump pump moves water out, but it needs a drain along the perimeter to collect that water first. Without the drain, water spreads across the slab before the pump reaches it.
Why does my basement smell musty when the floor looks dry?
A musty smell points to moisture in the walls or slab even without puddles. White powder on the wall is another sign water is moving through the masonry.
Does my home need interior or exterior waterproofing?
Exterior waterproofing stops water before it reaches the foundation but needs room to dig. Interior systems collect water that is already inside. A. Pennacchi & Sons recommends one after seeing the foundation.
Can an old stone foundation be waterproofed?
Yes. Old stone walls are better served by an interior French drain with a vapor barrier. Surface sealers trap moisture in the stone and speed up decay.
What Our Clients Say

A Reputation Built On Referrals.

5.0
Countless Google Reviews
MA

Michael Atkin

8 reviews

10 Months Ago

“Knowledgeable, professional, reliable. Sent 6 masons to get the waterproofing job done quickly. Highly recommended. Has the knowhow to get the job done right the first time. A trustworthy expert firm.”

Basement Waterproofing
LH

Lauren Hilton

1 review · 1 photo

A Year Ago

“I had a roofer come out for a small leak in my attic. He fixed it and while up on the roof took pictures of my chimney. Told me I had a big problem. Lot of mortar missing. I called A. Pennacchi & Sons. Paul came out the next day. He told me what needed to be done and gave me a price. I asked him if I should add a few bricks to the top. He said "why do you want to spend more money?" What contractor says that? The men came out a few days later. On time, polite, got right to work, and cleaned up like they were never there. Paul had given me a choice of colors. His price was the best one. My chimney now looks absolutely beautiful. I would give them 10 stars.”

Chimney Repoint
RT

Rich Treichler

11 reviews

A Year Ago

“Great experience with Paul and the Pennacchi team. We contracted this firm to waterproof our basement and replace our basement windows. Nick was excellent at coordinating the effort, including preparation, window replacement, waterproofing, clean up, and follow up to inquire about and resolve a few questions. Happy to recommend Pennacchi and Sons.”

Basement Waterproofing
BG

Brenda Giannacio

1 review

A Year Ago

“A. Pennacchi & Sons has offered outstanding service since our first meeting. Honest, reliable, knowledgeable, and very responsive. The staff take pride in their work and are very respectful of your home. We highly recommend using them if you are having issues with a wet basement. We cannot thank them enough.”

Basement Waterproofing
JA

Jackson Adolph

2 reviews

A Year Ago

“Pennacchi sealed our basement 2 years ago. After a recent heavy rain we noticed seepage and asked Pennacchi to look at it. They sent Nick, who did an excellent job diagnosing the problem, finding the most likely seepage site, and then repairing it. Nick came by the next day, inspected the repair, and also improved sealing of 2 utility pipe entries. The rapid response, competency, diligence, and follow-up were excellent.”

Basement Waterproofing Repair
MA

Mmm Aaa

Local Guide · 19 reviews · 24 photos

2 Years Ago

“We are so impressed with Pennacchi & Sons. Multiple people recommended this company as the best in the region. For a company with a huge legacy, working throughout the county, there was no hesitation to see what our small job looked like and whether they could help. The crew was friendly, timely, and efficient. Ray walked us through the process, gave us a play-by-play for the best understanding of the work, and answered tons of questions. The end result was better than the original.”

Masonry Restoration
MS

Michael Su

Local Guide · 11 reviews · 1 photo

2 Years Ago

“Pennacchi has an exceptional reputation and we now have firsthand experience of their stellar work. The precision craftsmanship and professionalism are impressive. We had our chimneys repointed, brickwork restored, and a basement wall resealed. It all blends seamlessly and looks gorgeous. Ask for Sam as your foreman if you can, he was amazing. The entire crew was fantastic. Kudos to Paul and the leadership for building a great team. Impeccable service and beautiful finished product.”

Chimney & Basement Sealing
AA

Adam Arif

Local Guide · 98 reviews · 1,020 photos

2 Years Ago

“Pennacchi & Sons does amazing work. They restored my front door steps which were in bad condition. They fixed all the chips and cracks and painted them. Very professional and great service.”

Stone Step Restoration
VC

Victoria Chow

9 reviews · 9 photos

3 Years Ago

“Water was getting into my house because of the old brick exterior. It needed to be repointed and painted on the interior. Although this was a very small job, Paul and his son Paul Junior were incredibly professional, listened, and addressed my concerns. I left their crew to complete the work without being home and everything was safe and secure when I got back. They kept their work areas clean and took away their trash. Paul’s price was the most competitive. HIGHLY RECOMMEND.”

Brick Repointing
WR

Wayne Richardson

8 reviews · 1 photo

3 Years Ago

“My basement was leaking really bad and had 2 different companies come out and try to fix the problem with no luck. Decided to try a third time and luckily I came across APS. They came out and did amazing work and solved all my issues. Put in a French drain, sump pump, and stuccoed the walls. They had to fix all the problems the other companies did, and it was a great experience working with them. Paul was extremely professional. Highly recommend if you need the job done right the first time.”

French Drain & Waterproofing
SB

S. B.

Local Guide · 14 reviews

3 Years Ago

“These guys did a great job on my chimney with stucco.”

Chimney Stucco
SS

Shibani Sharma

8 reviews

3 Years Ago

“Excellent work. Very professional.”

General Masonry
ES

Ellen Scanlon

Local Guide · 13 reviews · 1 photo

5 Years Ago

“Pennacchi is the best. We had several jobs done in the past few months and found Paul and team to deliver exceptional work and service for reasonable prices. Very knowledgeable and professional. We had the basement waterproofed, foundation redone, and steps repointed. Extremely satisfied.”

Foundation & Waterproofing
BC

Bill Cunningham

Local Guide · 78 reviews · 265 photos

5 Years Ago

“The best in the business. Ask for Paul. Tell him Billy C. sent ya.”

General Masonry
KT

Katia Ten Eyck

Local Guide · 24 reviews · 69 photos

6 Years Ago

“We hired Pennacchi and Sons to waterproof our basement. We did not necessarily have issues, we just wanted to prevent any moisture problems in the future. We consulted with a few other people before speaking with Paul, the owner. Paul came up with an effective and cost-effective solution for us. We are very happy with the service and highly recommend Paul to everyone.”

Basement Waterproofing
JM

John Monsport

7 reviews · 1 photo

6 Years Ago

“These guys did an amazing job for us. 20 years of trying to get my basement dry and these guys finally got it to work. We actually had another company do it 15 years ago but we always got water back. Paul and his brothers worked hard and they cleaned us up as well. Thanks for letting me tell this story guys.”

Basement Waterproofing
MS

Mike Salvador

2 reviews

6 Years Ago

“I hired Pennacchi and Sons to do repair work on my chimney. In the 3 days they were here, they did an excellent job from start to finish. They also left my home in the same condition as it was before they came. I could not recommend this company more and would definitely hire them again if I needed future masonry work done.”

Chimney Repair
MB

MeghanB

16 reviews · 2 photos

6 Years Ago

“Gorgeous job repairing and painting my chimney.”

Chimney Repair & Paint
BK

B. K.

Local Guide · 56 reviews · 1 photo

6 Years Ago

“You want the best, call Paul at Pennacchi & Sons. Great work and he stands by all his work. A++”

General Masonry
MP

Marcus Padulchick

Local Guide · 102 reviews · 32 photos

7 Years Ago

“I would use them again. We needed a front porch and patio repaired. They did a great job and are very responsive to follow up. Attention to detail is certainly something I was impressed with.”

Porch & Patio Repair