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Best basement waterproofing pros near Manhattan, MT

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Top-Rated Basement waterproofing pros in Manhattan - Updated Nov 2026

Avatar for Groundworks
Groundworks
4.3(
28
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Manhattan, MT and surrounding areas

Approved (Corporate)

In business since 2010

Free estimates

Warranties offered

"My certified inspector MatthewCote out of the Belgrade, MT office found i have a natural spring comming up in my crawlspace. I knew I had water streaming all over crawlspace and my husband believed it was due to watering lawn of the hill our house sits on. Matt was great to work with, he was totally professional. He explained my situation and showed me in photos and map of my basement what this ssprincause, how it had eroded and damage caused. It has been going on for quite a few years, of which I noticed escalation of water even though I decreased watering on above lawn. I wish I had researched this sooner. But MATT assured me it's not too late. He was clear and concise as to what I needed done to resolve and eliminate further damage by installing 2 sump pumps, installing trenches & piping to drain all areas of water, draining ouside of house past septic and leach field, add a humidifier and encapsulation of crawlspace. I highly recommend Groundworks and Matt to anyone."
Basement
Basement
Basement
Basement
Foundation

+16

Response time2 days
5 neighbors recently requested a quote
Recommended by72%of homeowners
Oasis Landscape & Excavation LLC
5.0(
20
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Manhattan, MT and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

With over 15 years of experience, Oasis Landscape & Excavation LLC is who you need to take care of your home. We handle everything from the initial consultation to making sure your property looks perfect every single time. We will always treat your property as we would treat our own, and you will be surprised how simple and easy our team will make the whole process seem. Give our team a call today. We're looking forward to working with you! \n

3 neighbors recently requested a quote
Recommended by62%of homeowners
Avatar for AAV Contracting
AAV Contracting
5.0(
6
)
Basement Drainage Channels - Install

Serving Manhattan, MT and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"AAV is very professional and does top notch work whether it's a deck Or a complete build. They listen to your idea's of what you want built and do great work. They will go over plans with you to be sure that whatever you want is done that way. I highly recommend AAV and I couldn't be any happier with their professional work."
Response time2 days
3 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Welk Excavating, Inc.
Welk Excavating, Inc.
New to Angi
Basement Drainage Channels - Install

Serving Manhattan, MT and surrounding areas

Approved

In business since 2020

Free estimates

Small jobs welcome

Excavation Contractor with over 10 years experience- in both commercial and residential projects Family run and operated business. \n \n Welk Excavation is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Road
Parking Area
Response time2 days
5 neighbors recently requested a quote
Oasis Landscape & Excavation LLC
5.0(
20
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Manhattan, MT and surrounding areas

In business since 2023

Free estimates

Emergency services offered

"Daniel and his crew did excellent work and in a timely manner. Daniel kept in constant contact with me thru out the project. Daniel installed a sprinkler system that was perfect for my yard. I would highly recommend Oasis Landscaping for all your Landscaping needs. Excellent company"
Before Front
After Back Yard
After Front
Back Yard Before
Fencing

+3

Response time3 days
Response rate89%
Recommended by62%of homeowners
Avatar for Simple Works
Simple Works
4.3(
16
)
Basement Drainage Channels - Install

Serving Manhattan, MT and surrounding areas

In business since 2014

Free estimates

Credit card accepted

"I can’t say enough good things about working with Peter Harris. We had a construction emergency and Peter took care of it skillfully and efficiently. Just after we went under contract to sell a family member’s condo, a water leak ruined the flooring and some cabinetry throughout the home. Immediately we struggled to work with the insurance company and find a contractor. Sourcing a reliable craftsman in Bozeman’s market seemed nearly impossible, and if we didn’t get the damage fixed quickly and competently, the water was likely to cause even more damage and we may have lost our buyer. With high praise, our realtor referred us to Peter. We were thrilled when he agreed to take on our job and ecstatic when we saw his work product was above reproach. Working with Peter was a joy, as well. He started the project almost immediately, gathering information for the insurance claim and ordering supplies. We live several hours from Bozeman and he was fine collaborating directly with our realtor for day-to-day issues. Peter kept us informed throughout and reached out to us for decisions when he needed approvals. Two months after Peter started the work, we closed on the condo. Thanks, Peter!"
Recommended by85%of homeowners
Rolandson Construction, LLC
4.0(
1
)
Basement Drainage Channels - Install

Serving Manhattan, MT and surrounding areas

In business since 2004

Free estimates

We have the experience and we are committed to providing quality workmanship and superior customer service on all our applications. We at Rolandson Construction LLC, strive to maintain our reputation as a high quality, very service oriented company with our main focus being customer satisfaction.

Response time1 day
Recommended by100%of homeowners
Showing 1-10 of 16
Basement Waterproofing FAQs, answered by experts

Yes, basement insulation needs a vapor barrier due to its susceptibility to moisture seeping in from the outside of the house. You should install a moisture barrier before you install insulation or purchase insulation that comes prebuilt with a moisture barrier to avoid water damage in your insulation and costly mold and water remediation expenses. 

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 purpose of crawl space encapsulation is to prevent mold by blocking moisture and reducing humidity. If the vapor barrier is properly installed, it significantly reduces the chance of mold developing within the crawl space. However, mold can sometimes grow behind the encapsulation material, but it will be sealed away from the main area. Additionally, moisture can still condense inside the encapsulated space, so if you notice excess humidity, installing a dehumidifier is recommended to prevent mold and mildew growth.

No, everything doesn’t get wet if the bathroom is well-designed and the fixtures are properly installed. It’s important that the floor of a wet room drains correctly, and proper waterproofing and slip-resistant flooring are used to avoid creating slipping hazards. Since the shower isn’t housed in an enclosed space, you’ll need to make sure the towel rack and toilet paper holder are placed in areas where they won’t get wet.

Basements with persistent moisture problems or flooding shouldn’t be finished until the moisture issues have been fixed. In addition, if your foundation is cracked, you have unmitigated radon levels, or you have asbestos or lead pipes, remediate the underlying problem before finishing your basement. Turning a basement into living space before fixing these issues can lead to serious health risks or structural damage. 

The Manhattan, MT homeowners’ guide to basement waterproofing services

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