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*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

Find Basement waterproofing pros in Post Falls

Avatar for Premier Basement Systems, Inc.
Premier Basement Systems, Inc.
3.7(
46
)

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."
Mold in the Inland Northwest
Mold in the Inland Northwest
Mold in the Inland Northwest
Mold in the Inland Northwest
Mold in the Inland Northwest

+1

Response time2 days
23 neighbors recently requested a quote
Recommended by84%of homeowners
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Avatar for MTU Services LLC
MTU Services LLC
5.0(
5
)

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 ;)"
Elevator pit waterproofing and sealing
Piers under an existing home
Piers under an existing homes middle wall
Solutions/Answers
Response time1 day
Response rate100%
13 neighbors recently requested a quote
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Avatar for Sturges Enterprises
Sturges Enterprises
4.9(
9
)

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
18 neighbors recently requested a quote
Recommended by88%of homeowners
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Avatar for MTU Services, LLC
MTU Services, LLC
4.8(
21
)

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

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.

Sandbags are the most common and efficient way to create a flood barrier at home. Some local authorities pass them around to homes before the risk of a flood. Otherwise, you can use flood-proof house materials, like burlap or woven plastic bags, to make sandbags and fill them with sand or cat litter. Make sure that when you stack them, they’re tightly laid on top of each other, creating the effect of a firm wall against accumulating water.

“Basement waterproofing” sometimes refers to applying a waterproof sealant to basement walls, in which case you would use a waterproof paint, often made of latex. However, there are many methods you can use to waterproof a basement, including exterior drainage systems, interior drainage systems, dehumidifiers, and more. As such, the materials you use can vary depending on the methods you use.

Anything having to do with the structure of your home, such as raising the ceiling, is usually the most expensive part of finishing a basement. Another project component that could be a surprisingly high expense is adding an exterior entrance. 

The cost of a walkout basement can be anywhere from $5,000 to $35,000.

A sewage smell in your crawl space is usually from a damaged or clogged pipe leaking sewer gasses or actual sewage underneath your home, but there are some other common causes. Moisture, from poor or damaged encapsulation or a malfunctioning sump pump, can harbor mold and bacteria, causing a musty smell. Pests can also get stuck in your crawl space and die, which causes a sewage-like odor.

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.

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