Get matched with top basement waterproofing pros in Post Falls, ID

Q: Can you over dehumidify a house?

• <div><p>Yes, it is possible to over-dehumidify a house by removing too much moisture from the air. This can create an overly dry environment that negatively affects those with respiratory or skin issues, and may cause your skin, hair, and sinuses to feel dry. However, this is unlikely to happen with most modern dehumidifiers, as they are equipped with moisture sensors and adjustable settings. These features allow the unit to pause automatically when the desired humidity level is reached, preventing the air from becoming uncomfortably dry. In contrast, older or more basic dehumidifiers left running for too long could potentially over-dry the air. To avoid this, aim for a balance between removing excess moisture and maintaining a comfortable environment. You can often monitor your home's humidity levels using a modern thermostat for guidance.</p></div>

Q: Is it okay for a crawl space to be wet?

• <div><p>No, you don&rsquo;t want your crawl space to be wet because water and even moisture in the air under your home can attract insects and rodents, decrease your indoor air quality, increase your energy bills, promote mold growth, and even lead to structural damage. If you notice any signs of water or humidity in your crawl space, you should get the issues addressed immediately by contacting a professional. They can remove moisture and will know <a href="https://www.angi.com/articles/how-to-waterproof-your-basement.htm">how to waterproof your basement</a> to prevent ongoing problems. </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: How do I keep water away from my crawl space?

• <div><p>Proper drainage is the only way to ensure that your crawl space stays dry. Depending on your property and the extent of your issue, you might need to consider a gutter system, a French drain, or sump pumps to avoid and handle water and moisture under your home. Dehumidifiers can also help to prevent moisture from accumulating if you have a high-humidity environment.</p></div>

Q: What happens if water gets under your house?

• <div><p>Standing water under your house can threaten its structural integrity. If water pools in your crawl space, it can damage the foundation and the structure above ground, causing wood rot, mold, and other problems. If you have a concrete foundation, standing water under your house can also make your foundation slabs crack.</p></div>

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Verified Reviews for Basement Waterproofing pros in Post Falls, ID

*The Angi rating for Basement Waterproofing companies in Post Falls, ID 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 Post Falls, ID 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 19, 2025

Reviewed in November 2025
Living on top of the aquifer, with an unfinished basement, I was worried about possible Radon exposure. Viking not only tested for radon but walked me through the process of how to remediate it's effects.
Viking Inspection Services LLC
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Reviewed in November 2024
The team at Floorcoverings NW communicated with me through the whole process and were able to finish the tile in the bathroom and carpet in the basement in the time frame we discussed.
Floorcoverings NW
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Reviewed in October 2024
Matt did a great job on our large shower project. He made sure to use the best and most up to date waterproofing material under the tile work. He knows his craft, and was patient with when plans changed. He’s a great guy to work with. Thanks Matt!
New Terrain Tile Installation
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Reviewed in March 2024
I have a Manufactured Home. I need the Sub-flooring repaired & replaced in the kitchen and halfway in my dining room. Take out the carpet in the dining room. The damage flooring in the kitchen. I also had flooring replaced in the washroom & guest bathroom. Josh is very Professional, meticulous...
Roman Built Flooring
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Reviewed in January 2024
Jeff is an amazing craftsman. We have a 127-year-old house. We don’t think any real work has ever been done to the foundation. He came in when we had a big leak after a snowfall. His solution was innovative and effective. We ended up using it throughout the basement! Great work, Jeff!
JW MASONRY
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Reviewed in January 2024
I recently contracted Kenyon to install drywall in basement bathroom that had a leak. He made the repairs efficiently and they blended well with the rest of the walls. I highly recommend Kenyon. He gave me a fair estimate, showed up when promised and gave me some ideas for another project. He...
Cierley Designs
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Reviewed in January 2024
They helped us finish our basement and essentially double our living area! Great to work with and Josh always made sure everything was cleaned up at the end of the day. Lots of attention to detail.
J & M Remodel LLC
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Reviewed in December 2023
Fantastic, our finished basement is now a perfect match to the the rest of the house. Very professional, polite, and discussed every aspect with us.
Bonney Construction, Inc.
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Reviewed in May 2023
I hired Panhandle Pro to finish my basement. They did an amazing job and we're very happy with it. They were mindful of costs and helped us to stay within budget. They managed the project well and kept us informed along the way. I highly recommend them.
Panhandle Pro Construction & Remodeling
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Reviewed in March 2023
We used Flooring Solutions on our own home. We were so pleased with their work that we my mother use them for her flooring project. She was replacing her basement and bathroom flooring. She is 91. She doesnâ t hear well. Flooring Solutions were kind and professional. The quality of their...
Flooring Solutions
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Find Basement waterproofing pros in Post Falls

Premier Basement Systems, Inc.

3.7(

)

Serving Post Falls, ID and surrounding areas

Approved

In business since 1992

Free estimates

Warranties offered

"They worked hard to finish on time. They brought in a few extra guys. The water is gone, the vapor barriers are successful."

Response time2 days

22 neighbors recently requested a quote

Recommended by84%of homeowners

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Foundation and Crawl Space Repair of Idaho

4.1(

)

Serving Post Falls, ID and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"On time and no problems"

Response time1 day

Response rate99%

3 neighbors recently requested a quote

Serving Post Falls, ID and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"We’ve had a lot of crews in our home for various projects over the years, and I have to say this was one of the most courteous. They worked hard, navigating through our kitchen to access the basement and I really appreciated their efforts. Thank you MTU, we now have safe walls in our cellar and fresh beams to keep the house standing ;)"

Piers under an existing homes middle wall

Response time1 day

Response rate100%

13 neighbors recently requested a quote

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Raptor Rooter & Plumbing, LLC

5.0(

)

Serving Post Falls, ID and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Very well thanks to William."

2 neighbors recently requested a quote

Recommended by84%of homeowners

Serving Post Falls, ID and surrounding areas

Approved

In business since 2020

Free estimates

Offers commercial services

"Andrew and his crew were on time, UNDER budget and very professional. Highly recommended!"

Response time1 day

20 neighbors recently requested a quote

Recommended by88%of homeowners

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Summit Tree Service And Excavation, LLC

4.9(

)

Serving Post Falls, ID and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"Great communication, service and clean up."

Response time1 day

Response rate93%

21 neighbors recently requested a quote

Serving Post Falls, ID and surrounding areas

Approved

In business since 2021

Free estimates

"Zack was awesome. On time on budget. Definitely would use again."

+13

Response time7 hrs

Response rate100%

Recommended by66%of homeowners

Serving Post Falls, ID and surrounding areas

Approved

In business since 2015

Free estimates

Customers say: Quick response

"I can't say enough about the guy!! He is a man of his word and has great pricing. He is very punctual and I don't know why anyone would go anywhere else!"

14 neighbors recently requested a quote

Recommended by100%of homeowners

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Big Dig Excavation, LLC

5.0(

)

Serving Post Falls, ID and surrounding areas

Approved

In business since 2025

Free estimates

Excavation

10 neighbors recently requested a quote

Serving Post Falls, ID and surrounding areas

In business since 2020

Free estimates

Warranties offered

"I had some major cracks in the walls of my basement. They were very professional and made sure I understood what they were doing. Super hard working guys and awesome customer service."

Response time10 hrs

Response rate91%

Recommended by94%of homeowners

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Showing 1-10 of 34

Basement Waterproofing questions, answered by experts

Yes, it is possible to over-dehumidify a house by removing too much moisture from the air. This can create an overly dry environment that negatively affects those with respiratory or skin issues, and may cause your skin, hair, and sinuses to feel dry. However, this is unlikely to happen with most modern dehumidifiers, as they are equipped with moisture sensors and adjustable settings. These features allow the unit to pause automatically when the desired humidity level is reached, preventing the air from becoming uncomfortably dry. In contrast, older or more basic dehumidifiers left running for too long could potentially over-dry the air. To avoid this, aim for a balance between removing excess moisture and maintaining a comfortable environment. You can often monitor your home's humidity levels using a modern thermostat for guidance.

No, you don’t want your crawl space to be wet because water and even moisture in the air under your home can attract insects and rodents, decrease your indoor air quality, increase your energy bills, promote mold growth, and even lead to structural damage. If you notice any signs of water or humidity in your crawl space, you should get the issues addressed immediately by contacting a professional. They can remove moisture and will know how to waterproof your basement to prevent ongoing problems.

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.

Proper drainage is the only way to ensure that your crawl space stays dry. Depending on your property and the extent of your issue, you might need to consider a gutter system, a French drain, or sump pumps to avoid and handle water and moisture under your home. Dehumidifiers can also help to prevent moisture from accumulating if you have a high-humidity environment.

Standing water under your house can threaten its structural integrity. If water pools in your crawl space, it can damage the foundation and the structure above ground, causing wood rot, mold, and other problems. If you have a concrete foundation, standing water under your house can also make your foundation slabs crack.

The Post Falls, ID 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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•
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What Is Basement Waterproofing and How Does It Work?
Struggling with a damp basement? Learn about basement waterproofing and how these tips can help keep your basement safe from the elements.
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•
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How to Keep Your Basement Dry and Get Rid of Moisture
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•
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7 Reasons Water Is Seeping Through Your Basement Floor
Unearth the root causes of water seepage in your basement floor. Explore effective solutions to keep your basement dry and your home protected.