*The Angi rating for Basement Waterproofing companies in Onalaska, WI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.
*The HomeAdvisor rating for Basement Waterproofing companies in Onalaska, WI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.
Last update on November 01, 2025
Serving Onalaska, WI and surrounding areas
Approved
In business since 1989
Free estimates
Warranties offered
"Everything went well and the basement has no more water intrusion."
+156
Serving Onalaska, WI and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 2005
Free estimates
Warranties offered
"Conner, Evan, Tony and crew removed an old failing diy waterproofing system from my basement and installed a new waterproofing system that looks and works great."
+16
Serving Onalaska, WI and surrounding areas
Approved
In business since 1996
Free estimates
Warranties offered
"They completed it in 2 days and I havent had an issue since the basement was waterproofed. However, they did forget to plan the initial inspection prior to the work as part of the permit. The city I live in ended up reaching out near the end of the permit date and I didnt know about it until then. I reached out to the project manager for my project at Acculevel about it and they did handle that issue promptly."
+26
Serving Onalaska, WI and surrounding areas
In business since 2011
Free estimates
Emergency services offered
"Very friendly, very knowledgeable, and great price. I would recommend All-Star Basements to anyone in Rochester. They know there stuff and get the job done in a timely fashion at a great price."
Serving Onalaska, WI and surrounding areas
In business since 1989
Free estimates
Emergency services offered
"They were good. They were pretty fast and came on time. My overall experience with them has been good."
Serving Onalaska, 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.
Due to the nature of basements, some level of waterproofing is necessary to prevent water from seeping in and causing damage. Some definitive signs that your basement needs waterproofing measures or needs existing waterproofing measures need to be updated include:
Water in your basement, including damp walls or puddles on the floor
Mold spots in your basement
Musty smells or odors
Warped doors or walls
Cracks in walls
Insect issues, such as cockroaches and termites
You can DIY basement waterproofing in some ways to help save on the overall costs. If your basement isn’t experiencing a lot of water but is noticeably humid, you can try running a dehumidifier that will pull the excess water out of the air. If you notice water leaking due to outdoor drainage issues, you can add downspout extensions to keep rainwater away from your home.
However, if the problem is more severe and requires a more extensive solution, it’s best to call a basement waterproofing professional to assess the treatment you need and install waterproofing safeguards properly. Since keeping water out of your basement is important, ensuring this job is done correctly the first time is best.
Damp proofing and waterproofing are both methods to help keep your basement dry. Damp proofing keeps soil moisture from entering your basement, which is helpful since your basement is underground. Waterproofing, however, keeps both soil moisture and liquid water out of the basement, which is essential, especially if you live in a wet environment. Because it’s more protective, waterproofing typically costs more than damp proofing.
Several factors dictate if you should waterproof the interior or exterior of your basement. Waterproofing the exterior of your home is a great option if you use your basement for storage, as it provides the most protection from water and water damage. If you prefer work done outside of your home versus inside, exterior waterproofing is best for you. However, interior waterproofing is often less expensive since the area is easier to reach and requires less labor.
The cost of basement waterproofing is $4,950 for the average homeowner. However, you could end up paying between $600 and $14,000, depending on factors like basement size, waterproofing method, and the region you live in.
If you live in an area with heavy rainfall, you might be paying more for waterproofing than if you lived somewhere drier since waterproofing contractors would be in high demand. Likewise, a 500-foot basement costs between $2,500 and $5,000 to waterproof, but that price rises significantly for a larger basement.
From average costs to expert advice, get all the answers you need to get your job done.
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Your basement waterproofing warranty may not cover as much as you think it does. Use this guide to help you understand the fine print before you sign a contract.
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