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Best basement waterproofing pros near Sewaren, NJ

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Top-Rated Basement waterproofing pros in Sewaren - 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 Sewaren, 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 Sewaren, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Emergency services offered

"Absolute waterproofing just installed an interior french drain at my 1960 house. They did a system in my brotherâ  s basement, 2 years ago, in Bound Brook, and while all of his neighbors got flooded during Ida,, his basement was dry as a bone. That is all I needed to know. Lou and his team did a great job at my home. They protected my property, did a very neat job and started and finished the job when they said they would. Also, the cost was very reasonable, great customer service and super nice guys."
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 Sewaren, 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 Blue Umbrella Waterproofing, LLC
Blue Umbrella Waterproofing, LLC
4.9(
57
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Sewaren, NJ and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"John and Steve responded to my inquiry quickly. The price was very reasonable compared to another company I received a quote from. Plus they were willing to give me more waterproofing protection than the other company. This business recognizes first responders and veterans. I was able to get the project started quickly because of that. I highly recommend them."
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 Sewaren, 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
Avatar for Quality 1st Basement Systems
Quality 1st Basement Systems
4.4(
313
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Sewaren, NJ and surrounding areas

Approved

In business since 1986

Free estimates

Emergency services offered

"I used this company first to install a dehumidifier and then a sump pump. Prices were reasonable and payment plan option available. My basement is now fully waterproof. The excellent customer service is polite and responds in a reasonable time. Awesome company!!!"
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+181

Response time10 hrs
Response rate100%
35 neighbors recently requested a quote
Basement Waterproofing Specialists
4.0(
597
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Sewaren, 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
Avatar for Bio-Tech Restoration & Emergency Services, Inc.
Bio-Tech Restoration & Emergency Services, Inc.
4.8(
211
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - Install

Serving Sewaren, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"We called 3 companies about our basement leak . Jeff responded immediately. He came over right away and gave a fair estimate for the job. He was back in 2 days with 3 workers. Leak was remedied . Everyone worked so hard on the inside and outside of our basement. We had a huge storm the next day. No leaks!! Jeff called on Christmas day to check on the job!! I would highly recommend this company. They are courteous, professional and know their stuff. Jeff is a pleasure to deal with."
 Bio-Tech at work
 Bio-Tech response unit with Trailer
 wet contaminated moldy sheetrock
 dirty primary filter
 Bio-Tech Restoration & Emergency Services Logo

+44

Response time1 day
31 neighbors recently requested a quote
Recommended by93%of homeowners
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Basement Waterproofing FAQs, answered by experts

Water damage to concrete is often gradual and can take months, if not years, for a concrete structure to be fully destroyed. The process often starts with cracks on the surface, followed by sinking slabs and eventually crumbling cement. Therefore, it is important to repair minor damages early to prevent the situation from worsening.

Underfloor insulation alone will not cause moisture and mold, but improper installation can. Although the purpose is to seal any drafts, your subfloor still needs ventilation. If you seal the area too tightly and prevent all airflow, this can cause moisture to get trapped. This moisture eventually leads to mold and—if your floors are wood—rotting.

Crawl spaces are prone to issues caused by excess humidity and improper ventilation, but that doesn’t mean you should avoid buying a house with a crawl space. A home that is encapsulated and well-maintained shouldn’t have any more issues than a slab or basement home.

The difficulty of adding a basement to an existing house can vary depending on the house’s location, the size of the basement, and the type and condition of the existing foundation. Adding a basement is a job best handled by the pros, so you’ll need to enlist professional help for this project.

A vapor barrier can last over 20 years, but they are vulnerable to pests, flooding, and other natural disasters. If your home weathers a storm or is treated for any pest infestation, make sure to have a drywall pro come check the integrity of your vapor barrier. It’s also important to have a pro install a vapor barrier since improper installation can lead to tears or leaks in the barrier that shorten its lifespan.

The Sewaren, NJ homeowners’ guide to basement waterproofing services

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