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Best basement waterproofing pros near Niagara, WI

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

Avatar for Sure-Dry, LLC
Sure-Dry, LLC
3.8(
19
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Niagara, WI and surrounding areas

Approved

In business since 1994

Free estimates

Warranties offered

"I had to come out and look at my driveway. Ended up having him look at a water issue in my basement and they made a good recommendation and I’m gonna have them fix my basement into the driveway."
Sump Pump Installation
Waterproofing Basement Walls
Egress Window
Egress Window
Concrete Resurfacing

+18

Response time5 hrs
86 neighbors recently requested a quote
Recommended by54%of homeowners
Avatar for Custom Craft Environmental
Custom Craft Environmental
4.6(
117
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Niagara, WI and surrounding areas

In business since 1991

Emergency services offered

Credit card accepted

"He had a cancellation and was able to come out the day I called. He verified that we actually didn't have mold growing in the one area. Since that area was connected to an indoor hot tub room, he checked the tub room just to verify that all was ok in there. He gave me some tips on preventing mold in that tub room and informed me about some other areas to watch (as this was in the basement and we have had water get inside with heavy rain) and I asked him about some marks on my basement ceiling. He was very knowledgeable and helpful. Will definitely be calling if need for future services."
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+1

Recommended by94%of homeowners
Avatar for B And B Basement Repairs LLC
B And B Basement Repairs LLC
5.0(
3
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Niagara, WI and surrounding areas

In business since 2015

Free estimates

Warranties offered

We are rated by our customers as one of the Top Premiere Foundation Repair Companies in WI. We strive to maintain an excellent reputation. We work hard every day to maintain our excellent rating! We do this by providing our customers with long-lasting, long-term, cost-effective solutions. With the most experienced installers in the industry on our team! It makes standing behind our work easy!

Ceiling Spray Foam
Response time2 days
Recommended by100%of homeowners
Avatar for Armatti’s Trucking and Excavating
Armatti’s Trucking and Excavating
5.0(
5
)
Basement Drainage Channels - Install

Serving Niagara, WI and surrounding areas

"They were good and it went very well.They were on time,quick about their work and I totally recommend them all the time.They were very nice company to hire and to work with."
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+2

Recommended by100%of homeowners
Drytronic, Inc.
New to Angi
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Niagara, WI and surrounding areas

In business since 1999

Established in 1999, Drytronic, Inc. is committed to excellence and continues to be an outstanding business in the Missouri and Illinois area. Drytronic, Inc. prides itself on an outstanding record of quality service. Our longevity is a testament to the level of service and quality you'll get when you choose Drytronic, for your basement waterproofing needs. We have a full staff of highly talented and motivated individuals that are eager to help you with all of your basement waterproofing needs. We are exited that you have expressed an interest in our services and we look forward to working with you.

Lone Wolf Plumbing
New to Angi
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Niagara, WI and surrounding areas

In business since 2013

Offers commercial services

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. \n

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Basement Waterproofing FAQs, answered by experts

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.

External pressure on the basement wall can cause it to bow inward. Soil, heavy with water saturation, is commonly the main culprit. The soil exerts immense pressure on the wall, causing it to fail, at least partially. This is known as hydrostatic pressure—these situations can occur after rainfall or simply due to regular groundwater presence and may be temporary or more permanent.  

Water can seep into porous materials like wood beams, floor joists, and roof rafters within minutes, but they’ll need to see prolonged exposure before you have structural damage. Mold can start growing within 24 hours, and mold can eat away at the structural components over time. Wood rot is more of a concern, though. Wet and dry rot are fungal infections that set in in moist conditions and rapidly deteriorate wood, causing major structural damage within just a few months in some cases.

As the first layer of water protection for your roof deck and the building materials below, underlayment is designed to prevent water damage, so it’s okay if it gets wet. However, you shouldn’t rely solely on underlayment for protection. If rain interrupts your roof project and you have all of the underlayment down, you’ll likely be fine, but you should install shingles over that layer as soon as possible, as long-term exposure can lead to water damage.

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.

The Niagara, WI homeowners’ guide to basement waterproofing services

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