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Best basement waterproofing pros near Belfast, NY

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

Avatar for Highlander Waterproofing Inc
Highlander Waterproofing Inc
5.0(
1
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Belfast, NY and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

At Highlander Waterproofing & Foundation Repair, we are the area's trusted experts specializing in basement and crawlspace waterproofing and encapsulation, along with foundation repair services for bowing and buckling walls, floor and wall cracks, and full foundation rebuilds to name a few. When you contact Highlander for a free inspection, you are choosing a BBB A+ Accredited, two-time Torch Award for Ethics Winner, with our most recent years 2021, 2022!

Response time1 day
Response rate100%
Hydro-Solutions, Inc.
3.2(
3
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Belfast, NY and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

Hydro-Solutions, Inc., are experts in Basement Waterproofing and Foundation Repair. We are a locally owned and operated company, that values honesty and integrity in all aspects of our business. Our dedicated team of professionals, have many years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

Response time5 hrs
Recommended by100%of homeowners
Avatar for Bravestone construction
Bravestone construction
New to Angi
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Belfast, NY and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

At Bravestone Construction, we provide reliable, high-quality construction and maintenance services for both residential and commercial clients. Our team is built on integrity, skilled craftsmanship, and a commitment to getting every job done right.\n\nFrom home improvements to commercial projects, we focus on efficiency, clear communication, and lasting results—no matter the size of the job.\n\nConsistency in service. Confidence in every result.\n

1 neighbors recently requested a quote
Avatar for Highlander Waterproofing, Inc.
Highlander Waterproofing, Inc.
3.8(
229
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Belfast, NY and surrounding areas

In business since 2011

Free estimates

Emergency services offered

"I called numerous companies to give me an estimate on waterproofing our basement. Brandon was quick to respond and was able to address the problem and find a solution that was directed at the specific issue. Highlander was easy to work with and actually enjoyed having the entire crew at the house. They went above and beyond answering any questions with a guarantee and cost that I could live with. I highly recommend Highlander to anyone looking to fix a damp basement."
Water under the floor
Interior french drain/Competion
Footer underpin
Footer Underpin
Finishing the floor

+45

Response time1 day
Recommended by88%of homeowners
Avatar for High Tech Construction Co
High Tech Construction Co
4.3(
43
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Belfast, NY and surrounding areas

In business since 1987

Free estimates

Emergency services offered

"My rear facade wall was falling apart, there was apparent deterioration, cracks falling apart. I was recommended to High Tech by our community board. Scaffold was used for this project. They chipped out the 4-story facade and applied wire-mash. First coat of cement was for curing and the second coat was  the finishing coat. The finishing coat was very finely re-finished. The back-wall was waterproofed with thoro-coat.  My roof was leaking as well at multiple places, bubbles had been formed with water seeping in, leaving into my kitchen. The weather was very rainy and stormy at that time and thanks to High Tech they repaired my roof by placing a new layer roof on top of the existing roof and stopped the leak. High Tech remains as one of the top recommended company in our community board."
Facade Restoration - High Tech Construction Co
stoop restoration -high tech construction co
Wood Stoop
Limestone Stoop
brownstone stoop and facade restoration

+20

Recommended by81%of homeowners
Polonia Contractors, Inc.
2.2(
6
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Belfast, NY and surrounding areas

In business since 2004

Free estimates

Emergency services offered

"The Contractors arrived on time and ready to work. They said 3 days and that what they meant. They were hard workers and cleaned up and discarded on the trash. They were very professional and knew their job. I would recommend to others anytime!"
Basement Waterproofing
Basement Waterproofing
Basement Waterproofing
Basement Waterproofing
Basement Waterproofing

+3

Response time11 hrs
Response rate98%
Recommended by100%of homeowners
Showing 1-10 of 26
Basement Waterproofing FAQs, answered by experts

Physically, the most challenging part of finishing a basement is installing egress windows or doors when the space is below ground level. Mentally, the hardest part may be envisioning the project and planning around load-bearing and mechanical obstacles.

One handy thing about whole-house dehumidifiers is, once installed, you don’t have to worry about placement or changing the dehumidifier’s position. But if you are using a portable dehumidifier, we suggest keeping it away from walls, vents, and furniture. It needs a central, unobstructed spot with access to lots of air to do its job.

If foundation problems are not fixed, they will likely worsen over time, leading to more complex and expensive repairs. Neglecting a damaged foundation can cause a range of issues, including:

  • Structural Damage: Minor problems like small cracks can escalate into major structural issues. This can damage the house above the foundation and, in severe cases, lead to foundation walls caving in or a total collapse.

  • Water Damage and Pests: Moisture and water intrusion can cause flooding, mold growth, and pest infestations.

  • Health and Safety Risks: Mold can lead to poor indoor air quality and other health risks, while structural instability poses a significant safety hazard.

  • Reduced Home Efficiency: A compromised foundation can negatively impact your home's energy efficiency.

To avoid these escalating problems and costs, it's best to hire a foundation repair company to address any issues as soon as you become aware of them. The earlier problems are discovered and fixed, the lower the repair cost will likely be.

Yes, water and water vapor can seep through cracks in your basement floor, which means you should address all basement floor cracks, even if they don’t indicate structural issues. Sealing settling cracks and shrinkage cracks is a good idea to keep water and moisture outside where it belongs. Doing so can improve your indoor air quality, reduce the risk of mold growth, make your home more comfortable, and help prevent pest infestation.

Egress windows or doors are required in finished basements to meet safety and building codes. If your basement is unfinished and used as a storage space, egress windows are not required, but anything considered a habitable space must have an additional point of egress in addition to the stairs.

The Belfast, NY homeowners’ guide to basement waterproofing services

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