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Top-Rated Foundation, basement or crawlspace waterproofing / encapsulation pros in East Setauket - Updated Nov 2026

Basement Man
4.9(
59
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving East Setauket, NY and surrounding areas

Approved

Super Service Award Winner

In business since 1984

Free estimates

Customers say: Terrific value

"Jack and his crew were thorough, professional and courteous throughout the entire waterproofing project for the basement, which included outside drainage work to better direct water away from the house, and the foundation repairs that were needed. He provided a detailed estimate and explained all facets of the project. Jack also provided additional recommendations for repairing the house gutters and downspouts. The home was built in the 1940's and the basement would flood following rain. Since the repairs, three rain storms within five weeks, each with over 3 inches of rain, have occurred and the basement waterproofing project was immediately tested. It has remained dry!"
Basement Man Brochure
Basement Man Brochure
Basement Man Brochure
Basement Man Brochure
Response time1 day
1 neighbors recently requested a quote
Recommended by92%of homeowners
Napolitano Brothers Contracting, Inc.
4.8(
25
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving East Setauket, NY and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

"I own discount cesspool and drain inc, ive been using Mike for over 10 years! His work is always perfect. He gives me and many new home owners the more resonable prices ever! Mike always comes on time and gives me a free in person estimate. If his price is higher than other contractors he beats the other price quoted by $500 every time. One of my favorite parts about this conpany is that they are family owned and operated. I highly recommend thid company to anyone looking for beautiful work, foundations, waterproofing, Ashphault work, brick and masnary work!! Thanks again Mike and Jim!!! -Dom Motta, president of Discount Cesspool and Drain Inc"
Paver Pool Patio and Retaining Wall
Walkway to Pool Patio.
Paver Driveway with Custom Border and Apron
Custom Stone BBQ and Wall
Custom Stone Work

+22

Response time9 hrs
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Home Healthy Homes, Inc.
Home Healthy Homes, Inc.
4.3(
120
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving East Setauket, NY and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"These guys were great. I had mold in my basement walls. This company was very knowledgeable and their price was very good. In one day not only was all the mold gone but they also waterproofed my basement. They were professional and fast. I highly recommend them."
Newsday Article
Response time4 hrs
Recommended by91%of homeowners
Avatar for BuildingLI.com - BLI Facilities LLC
BuildingLI.com - BLI Facilities LLC
5.0(
32
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving East Setauket, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Eddie was great to work with! We had a limited time frame to adhere to town inspections and Eddie and his team knew exactly what we needed and quickly got the job done. The results were great and even the inspector acknowledged the impressive repair. They were able to put a knocked out garage wall back on the foundation and repair the interior dry wall. I would recommend this company for any professional contract work due to their reasonable price, ease to work with and quality of work."
before demo
kitchen demolition
demolition complete
kitchen tile job in progress
kitchen tile

+172

Response time7 hrs
Recommended by76%of homeowners
Avatar for Foundation Crack Repair, LLC
Foundation Crack Repair, LLC
4.5(
17
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving East Setauket, NY and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"I had a crack in my foundation that needed to get repaired quickly. They did a fantastic job and were a pleasure to deal with. I recommend them for anyone that’s in the same position that I was!"
Foundation Repair Ex.
Basement Repair Project
Response time2 days
Response rate99%
22 neighbors recently requested a quote
Avatar for Comfort Basement
Comfort Basement
4.4(
163
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving East Setauket, NY and surrounding areas

In business since 2007

Free estimates

Credit card accepted

"Mr. John O. arrived on time and alerted me prior to his coming by phone. John went around the basement and inspected the walls and windows for moisture penetration, and signs of deterioration. He listened to my concerns and wrote a report and recommended an indoor french drain installation based on his professional judgment of the situation.
I received the report with a schematic of my basement and his assessment as a pdf on email. He included a detailed estimate for the work proposed.
I feel that I got a report and an hour of evaluation for $49 and it is fair.
"
Recommended by91%of homeowners
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FAQs for foundation, basement or crawlspace waterproofing / encapsulation projects in East Setauket, NY

Yes, crawl space encapsulation is a good investment. It improves your home's energy efficiency and air quality, boosting its value. With routine inspections and maintenance, encapsulation provides a long-lasting solution to moisture and pest issues. Regular check-ups protect your investment, enhance energy efficiency, and maintain your home's structural integrity. If your home is prone to pests or moisture seepage, encapsulating your crawl space is definitely worth it.

A vapor barrier is a thin sheet of plastic that prevents moisture from seeping into your crawl space, while insulation prevents unconditioned air from entering. Combining both insulation and a vapor barrier creates a dry, temperature-stable environment. Some insulation products serve both purposes, enhancing energy efficiency and protecting against moisture and temperature fluctuations.

The East Setauket, NY homeowners’ guide to foundation, basement or crawlspace waterproofing / encapsulations

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