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Best basement waterproofing pros near Flemington, NJ

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TRUSTED BY FLEMINGTON, NJ HOMEOWNERS

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    Average homeowner rating
  • Verified reviews icon42
    Verified basement waterproofing services reviews

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

Avatar for Absolute Waterproofing and Renovation, LLC
Absolute Waterproofing and Renovation, LLC
4.8(
190
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Flemington, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Emergency services offered

"Lou and his team at Absolute Waterproofing are hard working professionals and they did an awesome job on our basement. Our basement had flooded and we needed mold remediation and waterproofing. We called Lou and he made a stressful situation a lot more easier to deal with. He let us know step by step everything that needed to be done and he was very responsive and answered all of our questions. We highly recommend them!!"
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 NATIONAL PRO WATERPROOFING LLC
NATIONAL PRO WATERPROOFING LLC
5.0(
48
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - Install

Serving Flemington, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"National Pro Waterproofing did an amazing job in our basement. Mike got us scheduled quickly, was professional and addressed any concerns I had. He showed up on time with his very experienced crew and they got the job done in one day. They worked quickly, neatly and even put up a plastic barrier to keep the dust from spreading out of the work area. They left the work area immaculate. I highly recommend National Pro Waterproofing!"
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 Century Masonry & Waterproofing
Century Masonry & Waterproofing
4.9(
64
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Flemington, NJ and surrounding areas

Approved

In business since 1996

Free estimates

Warranties offered

"We had water issues in our basement. They provided great, cost effective solution and explained all the steps for the resolution. Professional, knowledgeable and clean service. We are so satisfied we would not hesitate to recommend them!!"
The beginning
WaterGuard XL
Final Product
CleanSpace around support pillars
CleanSpace on the floor

+26

Response time1 day
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Basement Gurus, LLC
Basement Gurus, LLC
4.8(
217
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Flemington, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Warranties offered

"The team arrived on time to do extensive work on my basement floor and walls and outside underground drainage issues. They worked tirelessly all day to remove old concrete, lay a new pipe system, pour new concrete, install sump pump, and seals. They prepped the walls and sealed and painted with Loxon paint. Radon seals were included in the redone areas. The outside work included installation of a new underground drainage pipe with pop up exit drain. A rubber membrane was installed behind the house siding. We?ve had several days of heavy rain since the waterproofing work was completed and the basement floor and walls have remained dry. We recommend Basement Gurus to other homeowners experiencing waterproofing problems for dependable and satisfying solutions."
100 Ft 4 inch HDPE to drywell
Concrete Replacement
Egress Installation
Walls After Wall Pin Installation
After Concrete has been removed

+339

Response time1 day
478 neighbors recently requested a quote
Recommended by68%of homeowners
Avatar for Dry Tech Waterproofing Solutions
Dry Tech Waterproofing Solutions
4.4(
276
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - RepairBasement Drainage Channels - Install

Serving Flemington, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"Ryan, Sr. Inspector, was professional, courteous, and walked me through my basement, pointing out what needed fixing and exactly what would be done. Came on time and left on time... cleaned up their mess, too! Very fair pricing, definitely worth every penny for a mold-and-moisture free basement! Very highly recommended!"
Digging out the area
Filling in the crack
During
Insulation board is placed over the Water Shield
Water Shield

+24

Response time8 hrs
Response rate99%
149 neighbors recently requested a quote
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 Flemington, 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!!!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+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 Flemington, 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 Quality 1st Basement Systems, Inc.
Quality 1st Basement Systems, Inc.
4.2(
214
)
Basement Drainage Channels - InstallFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Flemington, NJ and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"Our basement specialist was Wilbur, he and his crew were very professional, very much attention to detail, they left our basement and yard very clean. Not to mention it was great to work with such nice people. We will be recommending Wilber and your company to anyone looking for basement waterproofing!! Thanks so much!!"
Driveway Restored With PolyLevel
NJ Basement Remodeled
Dark Basement Transformed
Basement Transformation
Unfinished Bedroom

+251

Recommended by84%of homeowners
Avatar for AJT Complete Construction LLC
AJT Complete Construction LLC
4.8(
346
)
Basement Drainage Channels - Install

Serving Flemington, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2012

Free estimates

Emergency services offered

"Work was done to code (which was not by previous company prior to my purchase of home). In addition to chimney repairs they did some work to boiler and hot water connects in basement that were not done to code. I am very satisfied with the work done. I highly recommend them and would hire them again."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+55

Response time11 hrs
Recommended by95%of homeowners
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Basement Waterproofing FAQs, answered by experts

Basements are commonly converted into game rooms. The potential challenges you may run into include controlling moisture, working with low ceilings, limited natural light, and the need for additional electrical or HVAC work. Addressing these issues can add to the total cost, but it ensures a comfortable and functional space.

Yes, you can enclose your crawl space. Enclosing your crawl space can promote energy efficiency and reduce the risks of pests and mold by limiting factors like humidity. It can also reduce heat loss, which is why doing so for the winter can make your home more comfortable.

In most cases, yes, because the large majority of basements leak or will have moisture issues at some point, and waterproofing methods can mitigate that risk or eliminate it entirely. Plus, water and moisture issues can be quite problematic, as they can lead to mold growth, rotting of building materials, structural damage, poor indoor air quality, increased electric bills, and other problems.

Methods include interior sealants, exterior excavation and waterproofing membranes, sump pump installation, and vapor barriers for encapsulation. Techniques vary based on the structure and severity of moisture issues.

You should plan on waiting at least a year and ideally two to three years after construction before finishing your basement. This will give the foundation time to settle in response to the weight of your home and the expansion of the surrounding soil. You can then repair your foundation and seal any cracks as needed before finishing it to reduce your risk of future leaks or other issues.

The Flemington, NJ homeowners’ guide to basement waterproofing services

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