Best basement waterproofing pros near Helena, MT

Q: Can a leak outside cause damage to your house?

• <div><p>Yes, outside leaks can easily cause damage to your home if you don&rsquo;t have waterproofing measures in place. Regularly check your property for signs of a leak, ensure your home&rsquo;s landscaping is at least at a 5% slope, your basement windows are sealed, and you have an aligned gutter system to catch rainwater.</p></div>

Q: What happens if a crawl space is not vented?

• <div><p>If a crawl space isn&rsquo;t vented, there can be moisture buildup, which can lead to mold damage, easily destroying the foundation of your home. A closed-off crawl space can trap heat, which can be useful in the winter, but can also trap dangerous gases and prevent clean air from entering the home through the floorboards. </p></div>

Q: What happens if water gets under pavers?

• <div><p>Water that pools under pavers can erode the soil foundation and weaken the paver structure. In some situations, it can also cause mold and mildew growth. If that happens, you may need to start budgeting for the <a href="https://www.angi.com/articles/how-much-does-it-cost-install-patio.htm">cost to build and install a patio</a> to replace the damaged one. </p></div>

Q: Which areas of my home are at risk for mold?

• <div><p>Unfortunately, mold can grow pretty much anywhere, on any kind of surface. However, you&rsquo;re most likely to see it in damp areas like basements or bathrooms, as well as anywhere there has been a water leak. Consult a local mold specialist to determine if certain areas of your home are prone to mold based on climate and other factors.</p></div>

Q: Can I add a sump pump to an existing basement?

• <div><p>A sump pump can be added to an existing basement. To do this, you will need to use a jackhammer or sledgehammer to break up the concrete and dig a pit. You will also need to create a hole in your basement wall to run the discharge pipe through.</p></div>

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Verified Reviews for Basement Waterproofing pros in Helena, MT

*The Angi rating for Basement Waterproofing companies in Helena, MT 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 Helena, MT 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 October 25, 2026

Reviewed in October 2026
I hired Capital City Handyman Services for just a few small things in my cabin. Plumbing was a big issue and he replaced all the pipes that that were old and cracked. Then he built a retainer wall for my basement and insulated and winterized it as well. All of this was done in a timely...
Capital City Handyman Services
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Reviewed in December 2025
We hired Ambient Air Solutions for HVAC, tankless water heater, and gas work at our home. The total contract was $22,124, and we paid $11,662 upfront. The project was tied to an October 31 completion date but was not finished until December 12 (6 wks late), causing us to miss rebates and lose...
Ambient Air Solutions Inc
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Reviewed in May 2023
Eric Poole, Forefront Flooring, did an excellent job installing vinyl wood flooring in our entire basement. He was not only meticulous about how the flooring was laid and he worked quickly and accurately. We highly recommend Eric for his hard work from beginning to end. The estimate for the job...
Forefront Flooring
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Reviewed in January 2023
Hired this place to install new plumbing lines, install toilets, showers, etc & install a water softener during a remodel. They flooded the house TWICE due to botched work by MT city plumbing. The first time was because they didn’t hook up the softener right and that caused our basement to...
Montana City Plumbing & Heating
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Reviewed in August 2022
My landlord insists on using this business and they have wasted so much time and money just for simple issues that they make worse. The level of unprofessionalism and disrespect is astounding, especially as a small local business. Every time, there's an issue with them sending someone on time,...
CLARK'S PLUMBING & HEATING
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Reviewed in January 2022
406 Construction did remodeling in my basement. Suspended tile ceiling and doors and trim. They do an outstanding job. I highly recommend them. Very knowledgeable and professional. And...they stick to their bid quote. I am planning on having them do a bathroom remodel.
406 Remodeling and Construction, LLC
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Reviewed in August 2019
BLK Construction remodeled my basement bathroom. This included an alcove bathtub with ceramic wall tile that required a drain relocation, new lighting, exhaust fan, tile floor, vanity and sink, toilet, recessed medicine cabinet, and new paint. They did an excellent job. These are good, highly...
BLK Construction
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Reviewed in April 2019
We hired Kent Coulter (Montana Handyman) for some remodeling and home improvement projects to include a basement bathroom installation, an upstairs bathroom remodel/update and also he did some kitchen improvements for us. He is very reliable and hardworking. Once started, he works quickly and...
Montana Handyman
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Reviewed in March 2018
Just adding photos to our review of our bedroom suite with basement below —
Homeworks
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Reviewed in May 2017
I will say this their work as far as quality was very good. Punctuality, professionalism, and business model not so much. I was quoted at $50 an hour for 60 hours. He stated, "I will charge $1000-$1500 more than my competitor. I looked up some of the ratings on this website and seemed good....
Montana Drywall & Painting
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Top-Rated Basement waterproofing pros in Helena - Updated Nov 2026

Groundworks

4.3(

)

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

Serving Helena, MT and surrounding areas

Approved (Corporate)

In business since 2010

Free estimates

Warranties offered

"we had concrete pads added after home construction. One pad had a 2 inch settlement on one corner. Complicating this was a stone wall sitting atop the pad. Excellent restoration was done by Groundworks From Bozeman. After a thorough evaluation by Ben, Chelsea and Tyler were prompt, educational and successful. I Highly recommend this company for your concrete/foundation needs."

+16

Response time2 days

2 neighbors recently requested a quote

Recommended by72%of homeowners

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J&J Construction and Landscaping

5.0(

)

Basement Drainage Channels - Install

Serving Helena, MT and surrounding areas

In business since 1998

Emergency services offered

Credit card accepted

We have 8 employees and 3 sub-contracting.

Recommended by100%of homeowners

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Hampton Enterprise LLC

3.7(

)

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

Serving Helena, MT and surrounding areas

In business since 1989

Free estimates

Emergency services offered

"I only use James when I need some work done to my house. He responds fast, gets the work done quicker than just about anyone else I've ever used and seems very concerned with leaving his customers happy."

Recommended by60%of homeowners

Basement Drainage Channels - Install

Serving Helena, MT and surrounding areas

In business since 2021

Free estimates

Emergency services offered

Welcome to CR Excavation LLC! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you! \n

+16

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Adams Excavation, LLC

New to Angi

Basement Drainage Channels - Install

Serving Helena, MT and surrounding areas

In business since 2009

Free estimates

Emergency services offered

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the customer’s needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.\nAdams excavation LLC is a family owned and operated business servicing Bozeman mt and surrounding areas. We offer excavation, grading, demolition and construction services. \nCall or text Kyle 949-422-5033 for a free estimate or email [email protected]\n\n-foundation and footing excavation \n-utility trenching \n-site preparation \n-pad grading\n-drainage grading \n-land clearing \n-access roads\n-backfill \n- concrete cutting and breaking \n- retaining walls\n- concrete placement \n

Response time5 hrs

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Rocky Mountain Excavation & Grading, LLC

New to Angi

Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Helena, MT and surrounding areas

In business since 2018

Free estimates

Emergency services offered

Rocky Mountain Excavation & Grading, LLC 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. \n

Response time12 hrs

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Integrity Plastering and Masonry

New to Angi

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

Serving Helena, MT and surrounding areas

In business since 2024

Free estimates

Emergency services offered

Plastering and Masonry services done with integrity since 2000. I have been in the trades for most my life and know what works and what doesn't! I pride myself on the quality work I provide, while delivering great customer service.\nPlease see some of the services I offer below and call -or- click to schedule an estimate today!\n

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Basement Waterproofing FAQs, answered by experts

Yes, outside leaks can easily cause damage to your home if you don’t have waterproofing measures in place. Regularly check your property for signs of a leak, ensure your home’s landscaping is at least at a 5% slope, your basement windows are sealed, and you have an aligned gutter system to catch rainwater.

If a crawl space isn’t vented, there can be moisture buildup, which can lead to mold damage, easily destroying the foundation of your home. A closed-off crawl space can trap heat, which can be useful in the winter, but can also trap dangerous gases and prevent clean air from entering the home through the floorboards.

Water that pools under pavers can erode the soil foundation and weaken the paver structure. In some situations, it can also cause mold and mildew growth. If that happens, you may need to start budgeting for the cost to build and install a patio to replace the damaged one.

Unfortunately, mold can grow pretty much anywhere, on any kind of surface. However, you’re most likely to see it in damp areas like basements or bathrooms, as well as anywhere there has been a water leak. Consult a local mold specialist to determine if certain areas of your home are prone to mold based on climate and other factors.

A sump pump can be added to an existing basement. To do this, you will need to use a jackhammer or sledgehammer to break up the concrete and dig a pit. You will also need to create a hole in your basement wall to run the discharge pipe through.

The Helena, MT 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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How to Keep Your Basement Dry and Get Rid of Moisture
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