Get matched with top basement waterproofing pros in Lewiston, ID

Q: Should I close my crawl space vents in winter?

• <div><p>In most climates, contractors recommend closing your crawl space vents in winter. Keeping them shut protects your crawl space from freezing temperatures, pests, and cool breezes that can lead to chilly floors in your home. However, it's often best to speak with a local crawl space team about your specific design and its relationship to the winter season.</p></div>

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: Does a basement need ventilation to reduce humidity?

• <div><p>Proper basement ventilation is very effective at reducing humidity. Without enough ventilation, your basement is prone to mold and moisture damage. Your basement should have as much natural ventilation via windows and doors as possible, and if your budget allows, you should also consider installing an ERV system to keep basement humidity levels at bay.</p></div>

Q: How can I protect my home from stormwater damage?

• <div><p>Installing storm windows can protect your home&rsquo;s interior from heavy storms. Most storm windows are made with enamel-coated aluminum with screens and sliding glass panels. They also make your house more energy-efficient. The average <a href="https://www.angi.com/articles/how-much-do-storm-windows-cost.htm">storm window cost</a> is $12,000, ranging between $4,250 and $19,850, depending on mounting, window types, glass types, and frame materials.</p></div>

Q: What preventative measures can reduce the risk of future water or storm damage?

• <div><p>Preventative measures, such as maintaining drainage systems, installing sump pumps, inspecting roofs regularly, and crafting comprehensive emergency plans, can help mitigate future risks.</p></div>

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Verified Reviews for Basement Waterproofing pros in Lewiston, ID

*The Angi rating for Basement Waterproofing companies in Lewiston, 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 Lewiston, 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 August 28, 2026

Reviewed in August 2026
Yes, all the work was done exactly the way I wanted it. He did the outer perimeter of New pavers the gazebo and inner pavers were done already. He matched it up perfectly and put in a drain and they also built this Retaining Wall exactly the way I wanted it done professionally on time and he’s...
Blue ridge construction
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Reviewed in July 2024
Removed and replaced deck. Installed egress window. Removed and replaced all roof shingles. Installed rain gutter. Removed and replaced part of soffit. All work was done in a professional and timely manner. Very meticulous in workmanship. Will definitely use this company again.
Jon Schlee Construction
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Reviewed in May 2024
We recently had the pleasure of working with Finishline Drywall, LLC and couldn't be happier with the results! Ryan and his crew showed up every day and stayed on task right through to the project's completion. Their attention to detail was impeccable and not only did they deliver...
Finishline Drywall
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Reviewed in March 2024
They did an awesome job cleaning my roof and treated it as if it was their own. I would highly recommend them!
Crystal Clear Exterior Solutions
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Reviewed in October 2023
Working with Isaac and the Desert Guard Painting team was an incredible experience and I could not more highly recommend them to anyone looking for a home painter. Especially if you are looking for someone who can get in and out very quickly without sacrificing quality. Their customer service...
Desert Guard, LLC
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Reviewed in October 2023
JD was great to work with. It was at a time when I really needed foundation work done because the builder was coming soon and the other company backed out at the last moment. JD kept me posted every day with questions and comments making me feel like I was part of the process. He did quality...
Anderson Pacific Construction LLC
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Reviewed in May 2023
Our new driveway, patio, walkways, and steps turned out amazing. They also installed and finished a retaining wall that looks perfect. Prices were reasonable and they were great to work with. The owner, Ryan, really seems to know what will look the best in the space provided and I appreciated...
Nelsen Construction Services, LLC
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Reviewed in January 2023
Andrew shows extreme attention to details and is a diligent craftsman. They did floors for us. Then both roofing and siding for a neighbor. We were both very satisfied with their work and found their rates to be very reasonable.
North Access Construction LLC
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Reviewed in July 2022
I had him put a deck extension in. He had to tie it in and wrap around steps. He is a craftsman. He is very communicative, shows up when he was supposed to, very reasonable.
E&K Services
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Reviewed in January 2022
They called me within 24 hours and was here the following morning. Submitted fair bid and came back promptly w/equipment to clear steep roofline of snow and ice. Nice people to work with.
Hells Canyon Tree Surgeon, LLC
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Find Basement waterproofing pros in Lewiston

Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Lewiston, ID and surrounding areas

Approved (Corporate)

In business since 1999

Free estimates

Small jobs welcome

Groundworks is the North America's leading and fastest-growing foundation repair and water management solutions provider. Groundworks is a vertically integrated company with its own manufacturing operations and a world-class software solution, allowing us to serve our customers more effectively. From the first phone call to the annual maintenance offered, our customers have peace of mind knowing we're there with one mission to repair, protect and improve their home. For state licenses visit Groundworks.com/licensing

25 neighbors recently requested a quote

Recommended by90%of homeowners

Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Lewiston, 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%

2 neighbors recently requested a quote

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Foundation and Crawl Space Repair of Idaho

4.1(

)

Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Lewiston, ID and surrounding areas

Approved

In business since 1990

Free estimates

Warranties offered

"On time and no problems"

Response time1 day

Response rate99%

16 neighbors recently requested a quote

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Three Bear Contracting, LLC

5.0(

)

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

Serving Lewiston, ID and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Justin provided some solutions to a foundation project and helped fix an irrigation problem with same day service. Justin is very knowledgeable and willing to explain the problem and how best to fix it."

Response time2 days

10 neighbors recently requested a quote

Recommended by100%of homeowners

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Roach Construction Company

5.0(

)

Basement Drainage Channels - Repair

Serving Lewiston, ID and surrounding areas

Approved

In business since 1946

Free estimates

Credit card accepted

"Left the site looking better than when they started!"

Recommended by100%of homeowners

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

Serving Lewiston, 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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Chaud Company Plumbing Services LLC

4.7(

)

Basement Drainage Channels - Install

Serving Lewiston, ID and surrounding areas

In business since 1986

Credit card accepted

"He was efficient and very knowledgeable. Fixed everything thoroughly and did the job promptly."

Recommended by96%of homeowners

Basement Drainage Channels - Install

Serving Lewiston, ID and surrounding areas

In business since 2020

Free estimates

Small jobs welcome

"Lee is awesome! We have hired him for several jobs and he is fast, well-priced, honest and knowledgeable. He is also a good, kind person, which can be hard to come by in construction! No matter the size or complexity of the project, he makes sure it gets finished perfectly down to every detail."

Response time8 hrs

Response rate90%

Recommended by75%of homeowners

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Hampton Enterprise LLC

3.7(

)

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

Serving Lewiston, ID 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."

Recommended by60%of homeowners

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Maughan Concrete & Excavation LLC

New to Angi

Basement Drainage Channels - Install

Serving Lewiston, ID and surrounding areas

In business since 2020

Free estimates

Credit card accepted

Offering concrete and excavation services. I have been in the trade of concrete and excavation for 20 years. Quick, efficient & quality work. Licensed and Bonded

Response time40 mins

Response rate100%

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Showing 1-10 of 11

Basement Waterproofing questions, answered by experts

In most climates, contractors recommend closing your crawl space vents in winter. Keeping them shut protects your crawl space from freezing temperatures, pests, and cool breezes that can lead to chilly floors in your home. However, it's often best to speak with a local crawl space team about your specific design and its relationship to the winter season.

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.

Proper basement ventilation is very effective at reducing humidity. Without enough ventilation, your basement is prone to mold and moisture damage. Your basement should have as much natural ventilation via windows and doors as possible, and if your budget allows, you should also consider installing an ERV system to keep basement humidity levels at bay.

Installing storm windows can protect your home’s interior from heavy storms. Most storm windows are made with enamel-coated aluminum with screens and sliding glass panels. They also make your house more energy-efficient. The average storm window cost is $12,000, ranging between $4,250 and $19,850, depending on mounting, window types, glass types, and frame materials.

Preventative measures, such as maintaining drainage systems, installing sump pumps, inspecting roofs regularly, and crafting comprehensive emergency plans, can help mitigate future risks.

The Lewiston, 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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•
Oct 16, 2026Oct 16, 2026
How Much Does Basement Waterproofing Cost? [2026 Data]
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•
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How Much Does It Cost to Finish a Basement? [2026 Data]
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•
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How Much Does Crawl Space Encapsulation Cost? [2026 Data]
A variety of factors can affect your total crawl space encapsulation cost. Here’s a breakdown of the cost of this project, whether you hire a pro or DIY.
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•
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How to Hire a Basement Waterproofing Contractor
Waterproofing your basement is important to protect your home. Follow these tips to ensure that you hire the right waterproofing contractor for the job.
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•
Jul 9, 2026Jul 9, 2026
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 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.