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Best basement waterproofing pros near Dunellen, NJ

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    Average homeowner rating
  • Verified reviews icon131
    Verified basement waterproofing services reviews

Top-Rated Basement waterproofing pros in Dunellen - Updated Nov 2026

Avatar for American A-1 Waterproofing
American A-1 Waterproofing
4.7(
148
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Dunellen, NJ and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

"I can't say enough good things about American A-1 Waterproofing. Roland and his team were amazing. I had originally opted to go with another contractor to install a French drain and sump pump, but after exposing the foundation, they got spooked and said they wouldn't perform the work. Roland came by and assured me his team could get the work done and they did not disappoint. Through the initial estimate, permitting, construction and final sign off, Roland and his team were communicative, prompt, clean, and extremely professional. It was an absolute pleasure to work with them!"
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+14

Response time3 days
Response rate100%
3 neighbors recently requested a quote
Avatar for Absolute Waterproofing and Renovation, LLC
Absolute Waterproofing and Renovation, LLC
4.8(
190
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Dunellen, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Emergency services offered

"Absolute waterproofing did an outstanding job installing carbon straps on a bowed basement wall. Not only did they do a great job , Lou took care of tbe township permit application and follow up . He was always available to answer any questions, supply information and warranty on carbon straps! When we decided to hzve the basement painted he got his crew together to do it immediately. He did an outstanding job. He was thorough, Always accessible and returned phone calls, explaining everything that he was doing to fix the problem! I highly recommend Absolute Waterproofing for any House that has a basement issue ! Barbara kenas remax central"
Drainage system
Structural renovations
Drainage system
Floor renovations
Drainage system

+48

Response time10 hrs
46 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for WEATHER-TITE WATERPROOFING INC.
WEATHER-TITE WATERPROOFING INC.
4.8(
100
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Dunellen, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 1992

Free estimates

Warranties offered

"Professional, reliable, honest and hardworking. Bob was wonderful to work with! We urgently needed basement waterproofing and Bob was efficient and worked in a timely manner. I have already recommended Bob to a friend and will continue to do so!"
Response time12 hrs
21 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for NATIONAL PRO WATERPROOFING LLC
NATIONAL PRO WATERPROOFING LLC
5.0(
48
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - Install

Serving Dunellen, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"I hired National pro Waterproofing to fix my basement moisture issues, and they did an amazing job! The team was professional, explained everything clearly, and completed the work on time. My basement has stayed completely dry since. Highly recommend?great service and results!"
Finished JOB
Start Job
MID JOB
Finished JOB
AFTER TRENCHED OUT

+3

Response time4 hrs
Response rate99%
10 neighbors recently requested a quote
Avatar for Blue Umbrella Waterproofing, LLC
Blue Umbrella Waterproofing, LLC
4.9(
57
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Dunellen, NJ and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"We had French drains installed around the whole perimeter of the basement. They were very professional from start to finish. Very fair quote and to be honest the best we recieved. On the day of the project, Tony who had given the quote was there to walk us through everything and get it all going. Even Steve the owner came out and checked in with us. The crew was great. They answered any questions we had, were very hard working and left the house cleaner then they found it. Overall a great experience."
OUR WORK
CARBON FIBER STRAP
Response time2 days
Response rate100%
7 neighbors recently requested a quote
Avatar for American Eagle Waterproofing, LLC
American Eagle Waterproofing, LLC
4.8(
99
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Dunellen, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Free estimates

Warranties offered

"Very neat with their work in a messy job. Laid down protective flooring to prevent mud from being tracked through my house. Went from a basement with ankle deep water to a waterproof basement with no water in the basement even after tropical storm rains."
waterproof
basement waterproofing
basement waterproofing
basement waterproofing
water under  floor

+6

Response time1 day
3 neighbors recently requested a quote
Recommended by94%of homeowners
Basement Waterproofing Specialists
4.0(
597
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Dunellen, NJ and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"I had a serious basement flooding problem. I had my basement waterproofed 2 times. it didn't work! Basement Waterproofing Specialists installed a commercial drain system and after 2 years I have never had a drop of water they are AMAZING, thank you Basement Waterproofing specialists YOU ARE THE BEST!"
Foundation Repair
 Before and After Stone Work
 Mirra Drain
 Mold Remediation
 Clean Work Areas

+67

Response time11 hrs
266 neighbors recently requested a quote
Recommended by86%of homeowners
Jersey Dry Construction, Inc.
4.5(
43
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Dunellen, NJ and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Jersey Dry provided the best total solution for our basement water issues at the best price. They delivered everything as promised and went beyond. They even re-installed and repaired the basement sink by replacing worn piping and re-directed a gutter at no extra charge. They were extremely responsive to our inquiries and questions. They painted the walls and cleaned up very well. They ensured that we were totally satisfied by walking through the job before they left. They may be the best contractor that we have ever used."
BEFORE
Cutting the trench
French drain installation
Completion
Jersey Dry's Truck

+5

Recommended by100%of homeowners
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Basement Waterproofing FAQs, answered by experts

Standard homeowners insurance policies may cover basement water damage or flooding, but only if it is caused by a sudden and accidental event that is a covered peril, such as a burst pipe or a failing appliance. Damage caused by natural flooding from extreme weather, groundwater seepage, or heavy rain is typically excluded and requires a separate flood insurance policy. Some insurers also offer an optional water backup endorsement for issues like sewer backups. Review your policy or speak with your agent to understand your specific coverage.

In most climates, contractors recommend closing your crawl space vents in winter. Keeping them shut protects your crawl space from freezing temperatures, pests, and cool breezes that can lead to chilly floors in your home. However, it's often best to speak with a local crawl space team about your specific design and its relationship to the winter season.

You can seal a concrete slab by cleaning the surface, filling in any cracks, etching the surface, applying a sealer, and letting it dry. Concrete slabs don't typically need sealing, but you can use a topical concrete sealer if you notice signs of water damage. If you haven't already fixed the cause of the leak, then you'll want to repair the plumbing before you seal a concrete slab.

Yes, you can finish a basement that leaks, as long as you address the leak first. Before finishing a basement, you’ll need to repair any cracks in the walls and waterproof the basement to prevent future leaks. It’s much harder to clean up a water leak from a finished basement than an unfinished one, so preemptively addressing any leaking areas prevents expensive repairs in the future.

Anything having to do with the structure of your home, such as raising the ceiling, is usually the most expensive part of finishing a basement. Another project component that could be a surprisingly high expense is adding an exterior entrance. 

The cost of a walkout basement can be anywhere from $5,000 to $35,000.

The Dunellen, NJ homeowners’ guide to basement waterproofing services

From average costs to expert advice, get all the answers you need to get your job done.