Get matched with top basement waterproofing pros in Welch, MN

Q: What is the real purpose of a crawl space?

• <div><p>A crawl space is an area under the house that provides access to plumbing, electrical, heating ducts, and other HVAC units. Its purpose is to create a buffer between the ground and the living area, helping with ventilation, moisture control, and access for maintenance or repairs. Crawl spaces are most often seen in houses in North America which are built on concrete foundations versus other parts of the world where buildings are constructed differently.</p></div>

Q: How long does it take for water to cause structural damage?

• <div><p>Water can seep into porous materials like wood beams, floor joists, and roof rafters within minutes, but they&rsquo;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.</p></div>

Q: Can underfloor insulation cause moisture and mold?

• <div><p>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&mdash;if your floors are wood&mdash;rotting.</p></div>

Q: Which storm shelter is the best?

• <div><p>Below-ground shelters are the best in terms of durability, but there is a risk of flooding and obstruction. Modern technology and rigorous construction requirements make above-ground shelters a better option for accessibility, safety, and, usually, your budget. They may not have the same aesthetic appeal, but many of their features make above-ground shelters a better option. </p></div>

Q: Can a crawl space dry on its own?

• <div><p>In most cases, a crawl space will not dry out on its own unless the moisture comes from an uncommon flood and isn&rsquo;t expected to be a recurring issue. For most homeowners, moisture problems in the crawl space will only continue to get worse over time, so addressing the underlying problem with gutter systems or a foundation drainage system and setting up a preventative solution like a dehumidifier is necessary.</p></div>

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Verified Reviews for Basement Waterproofing pros in Welch, MN

*The Angi rating for Basement Waterproofing companies in Welch, MN 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 Welch, MN 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 March 08, 2026

Reviewed in March 2026
Cal was great! He built our deck and did a marvelous job. We also had him build a wall in our basement.
Cal's Construction, LLC
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Reviewed in October 2025
I had a basement remodel to include a bathroom, bedroom and walk in closet. The craftsmanship of the work is exceptional. Jerry and his team are a delight to work with. I highly recommend Jerry for any project.
Finely Done
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Reviewed in March 2025
We are totally pleased with the fast response and excellent quality work from WindRiver Exteriors. After finding mold in our basement bedroom and bath, we had a mold remediation group remove the mold. This included removing the bathroom ceiling and sections of the wall and flooring in the...
Wind River Exteriors LLC
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Reviewed in October 2023
Very pleased with the results of our siding. Bob, Mike, and the small crew were pleasant to work with. Project was finished in a few days and we felt they did an excellent job on our siding and basement windows. The clean up was thorough and the whole project was reasonably priced. We highly...
Croixside Home Improvements, LLC
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Reviewed in June 2020
We wanted a 20x20 Azek deck and had used Hassam for our basement project earlier in the year, we LOVE what they did! We get compliments from the neighbors and are using it everyday. We did a picture frame design and it looks incredible. Scott is the name of the builder and he has been building...
Valiant Renovations
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Reviewed in November 2019
He came on time and was very nice to talk to. He explained a bit about mice behavior and went around the entire house, in the attic and basement to find out how they were getting in. He caulked and set traps with bait. He is a pro and alot better than others we've used.
Francis Animal and Pest Control, LLC
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Reviewed in June 2018
John did a fantastic job on finishing our basement! We are so pleased by the quality of work that he did, with close attention to detail and honest work! He was a wonderful person to work with and gave us a fair bid and the finished product was much better than the work that our original...
Houseworks Construction, Inc.
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Reviewed in September 2017
The overall experience was just fine. No pressure no salesman just the guys that do the work. I have 5 basement windows.. about 32" by 14 inches. So I had Quick Set put in there block windows, 4 inch by 4 inch, with a screen vent, which is a real plus. I had always seen these basement block...
Quick Set, Inc.
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Reviewed in July 2017
They were very slow getting us estimates for the drying of the basement and getting it fixed after the drying was done (we did not have them fix it up). They were heavy-handed demanding full payment before doing the job. They told our renter they were leaving without drying their side since we...
Rapid Restoration, LLC
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Reviewed in November 2016
The removal of the old stove and the install of the new wood stove was done well, they were careful not to damage the floors or walls. But the pipe from the new wood stove to the chimney vent on the wall has gaps in it. At 3 joints there are 1/4" to 1/2" gaps between the pipes. So when you are...
Comfort by Design
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Find Basement waterproofing pros in Welch

Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Welch, MN and surrounding areas

Approved

In business since 1989

Free estimates

Warranties offered

"We had a massive project including foundation repair, waterproofing drainage system installation and crawl space encapsulation. We were very pleased with the work and the professionalism . We also appreciated everyoneâ s responses to all our questions before and during the project."

Increased Efficiency of Crawlspace in Elk Mound

+156

Response time4 hrs

627 neighbors recently requested a quote

Recommended by91%of homeowners

Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - RepairBasement Drainage Channels - Install

Serving Welch, MN 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

255 neighbors recently requested a quote

Recommended by85%of homeowners

Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Welch, MN and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Emergency services offered

Small jobs welcome

"I had a room in my basement sheet rocked and outlets installed. I was happy with their work."

Response time1 day

Response rate97%

Recommended by73%of homeowners

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Mitts Construction LLC

5.0(

)

Basement Drainage Channels - Install

Serving Welch, MN and surrounding areas

Approved

In business since 2020

Free estimates

Offers commercial services

When you hire a local septic company, you want to know that you're hiring a team you can rely on. You'll be glad you hired Mitts Septic and Excavating because...\n\n\nWe're a family-owned and -operated company\nWe've been in business serving the Rochester MN area for more than five years\nWe take pride in leaving our work sites clean\n\nWe set up durable residential and commercial septic systems. We'll work with a designer to install the customized plan for your home and commercial facility and ensure that it meets local requirements. We'll handle every part of the installation project, from clearing away brush to cleaning up the work site. Call 507-961-3385 today to get a free estimate on septic system services.\n\nMITTSSEPTIC.COM

Response time2 days

Response rate93%

4 neighbors recently requested a quote

Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Welch, MN and surrounding areas

In business since 2016

Free estimates

Credit card accepted

"Mike took on the job of replacing some drain tile in basement that was clogged/broken. He was prompt and professional. And after job was completed cleaned up the basement area that was in question. He followed up his work with a phone call to make sure all was working properly. Highly recommend him."

Response time1 day

Recommended by100%of homeowners

Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Welch, MN 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."

Response time1 day

Recommended by90%of homeowners

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All-Star Basements, LLC

4.3(

)

Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Welch, MN and surrounding areas

In business since 2011

Free estimates

Warranties 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."

Response time1 day

Response rate86%

Recommended by95%of homeowners

Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Welch, MN and surrounding areas

In business since 2021

Free estimates

"Radiant Radon LLC did a great job. I am a Realtor and was representing a client selling house. The buyer wanted a Radon test done before the closing of the house. We were on a tight schedule and Jon was prompt and professional. He did the inspection and then also did the mitigation. Service was well done and affordable with good communication. Client and buyer were happy with results and the house got sold. Thanks Jon! Had a good experience using your company and will reach out to you again for any future Radon testing/mitigation needs."

+15

Recommended by100%of homeowners

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Northstar Insulation LLC

4.6(

)

Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Welch, MN and surrounding areas

Free estimates

Credit card accepted

"It went very well. A professional company that will go the extra mile for its customer. I am well pleased with their work and would recommend them to all."

+17

Recommended by93%of homeowners

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Sharpe Construction LLC

4.7(

)

Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Welch, MN and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"They did a fantastic job! Our house is old and has stucco walls and they add able to match the depth of the stucco perfectly and painted to match. Professional with excellent communication."

+14

Recommended by95%of homeowners

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Showing 1-10 of 29

Basement Waterproofing questions, answered by experts

A crawl space is an area under the house that provides access to plumbing, electrical, heating ducts, and other HVAC units. Its purpose is to create a buffer between the ground and the living area, helping with ventilation, moisture control, and access for maintenance or repairs. Crawl spaces are most often seen in houses in North America which are built on concrete foundations versus other parts of the world where buildings are constructed differently.

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.

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.

Below-ground shelters are the best in terms of durability, but there is a risk of flooding and obstruction. Modern technology and rigorous construction requirements make above-ground shelters a better option for accessibility, safety, and, usually, your budget. They may not have the same aesthetic appeal, but many of their features make above-ground shelters a better option.

In most cases, a crawl space will not dry out on its own unless the moisture comes from an uncommon flood and isn’t expected to be a recurring issue. For most homeowners, moisture problems in the crawl space will only continue to get worse over time, so addressing the underlying problem with gutter systems or a foundation drainage system and setting up a preventative solution like a dehumidifier is necessary.

The Welch, MN homeowners’ guide to basement waterproofing services

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

See all articles

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Oct 28, 2025Oct 28, 2025
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How Much Does It Cost to Finish a Basement in Minneapolis, MN? [2026 Data]
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May 26, 2026May 26, 2026
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How to Waterproof a Basement Like a Pro
Dealing with a damp basement? Follow these steps for DIY basement waterproofing to keep water and moisture out and boost your home’s energy efficiency.