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Expansion Joints, Weather Seals, Commercial Sealants.

Commercial Caulking & Sealant Replacement.

Commercial joint sealing, weatherproofing, and movement-joint replacement for building envelopes.

Family-Owned Since 1947

Four Generations · Paul-Led

Written Proposal

Fixed Total · Clear Scope

Tri-State Coverage

NJ · PA · NYC · FL

By Paul Pennacchi·Fourth-Generation Owner, A. Pennacchi & Sons

Caulking is the most undervalued weather-seal trade in the region. Failed sealant is responsible for a surprising amount of interior water damage in commercial buildings. A. Pennacchi & Sons replaces expansion joint sealants, window perimeter caulking, and facade transition sealants on commercial buildings across New Jersey, Pennsylvania, and New York City. Paul-led on every project.

Caulking: What Caulking Actually Does.

What Caulking Actually Does.

Sealant is the flexible joint between two rigid materials that accommodates thermal and structural movement without letting water in. Caulking fails when the sealant loses elasticity (typically 10 to 20 years depending on exposure), when the joint was sized incorrectly at installation, or when the wrong sealant type was used for the substrate. Failed sealant is rarely visible from the ground but is almost always the cause when a commercial facade starts leaking.

  • Window and door perimeter caulking
  • Expansion and control joint sealant replacement
  • Through-wall flashing termination seals
  • Parapet cap and coping joint sealants
  • EIFS reveal and transition caulking
  • Elastomeric movement joint installation
Caulking: Why Caulking Has To Be Matched To The Substrate.

Why Caulking Has To Be Matched To The Substrate.

Different masonry substrates require different sealant chemistries. Silicone works on glass and metal but not well on porous masonry. Polyurethane works on masonry but degrades under UV without a finish coat. Modified-silyl-polymer hybrids work on almost everything but are more expensive. We specify sealant type and primer based on the substrate, the joint movement class, and the exposure. We do not apply cheap acrylic caulk on moving building joints, which is the single most common failure we see.

Caulking: When A Building Needs Full Re-Caulk.

When A Building Needs Full Re-Caulk.

At 15 to 20 years, most commercial buildings need a full sealant refresh as part of normal envelope maintenance. Skipping this maintenance cycle invariably leads to interior water damage that costs more to remediate than the re-caulk would have cost to prevent.

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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
Our Process

How We Work.

  1. Step 01

    Request An Estimate

    Submit the form or call the Hamilton headquarters. A specialist replies within one business day to confirm scope and book the site visit.

  2. Step 02

    Site Visit

    A Pennacchi craftsman meets you at the property, identifies the failure mode, documents the scope with photographs, and reviews options with you on the spot.

  3. Step 03

    Written Proposal

    Within 5 business days you receive a fixed-price written proposal with a clear scope of work and a total price. No time-and-materials. No surprises.

  4. Step 04

    Production & Cleanup

    Our crews execute the work, tarp landscaping, enforce strict debris control, and cure the final joints before we invoice. Project leadership stays consistent start to finish.

Cost Of Waiting

Every Season Of Delay Makes The Fix Bigger.

Masonry failure is not a maintenance item. It is a cascade. A hairline mortar crack lets water in, freeze-thaw widens it, brick spalls, the wall destabilizes, and what was a modest repoint two winters ago becomes a full-envelope rebuild. On every caulking project we quote, the scope is always smaller now than it will be next year. The earlier you book a site visit, the smaller the job.

How Long Does Commercial Caulking Last?
10 to 20 years for well-specified silicone or polyurethane sealant in typical exposure. Shorter in aggressive sun or chemical environments. Cheap acrylic caulks often fail at 3 to 5 years.
Do You Cut Out The Old Sealant Or Caulk Over It?
We cut out. Re-caulking over failed sealant is a one-to-two-year fix that creates a bigger mess later. The correct method is full removal, substrate preparation, primer application, and fresh sealant installed to the right depth.
Can You Caulk In Cold Weather?
Most high-performance sealants have temperature windows for installation. We check the manufacturer’s specification for the specific sealant and substrate, and we do not install outside that window even when a client presses for it.
Start Your Project

Ready To Discuss Your Caulking Project?

Call the Hamilton headquarters or submit the form. A specialist replies within one business day to confirm scope and schedule a site visit.

Call Now Get Estimate