Best basement waterproofing pros near Helena, MT

Q: Do I need a dehumidifier in my encapsulated crawl space?

• <div><p>You don&rsquo;t always need to install a dehumidifier in your encapsulated crawl space, but it might be a good idea in certain instances. If you notice obvious signs of condensation, mold, or musty smells permeating from your crawl space, a dehumidifier can help. It&rsquo;s ideal for homes in humid areas.</p><p>In a worst case scenario, structural damage like rust on metal beams, rotting wood, and swelling on doors and windows can signal moisture problems that would benefit from a dehumidifier.</p></div>

Q: Should I pick a topical or a penetrating sealer for my project?

• <div><p>Topical sealers adhere to the surface of concrete to create a protective layer. In many cases, this is all you need for concrete that sees light to moderate traffic, such as your basement. Penetrating sealers, on the other hand, bond with the free lime in the top layer of concrete to form calcium silicate, which prevents liquid from passing through. This type of sealer protects the surface from water, oil, and gasoline spills.</p></div>

Q: Should I be worried about water in my basement?

• <div><p>You should take care of any sign of water in your basement, whether it&rsquo;s dampness after heavy rain or puddles of water on the floor. Besides potentially causing a health hazard, the moisture can damage your home&rsquo;s structure and foundation. Furthermore, mold can grow quickly and spread throughout the rest of your home. With <a href="https://www.angi.com/articles/how-much-does-mold-remediation-service-cost.htm">mold remediation costs</a> ranging between <b>$1,200 and $3,400</b>, it&rsquo;s best to avoid mold issues by fixing the leak.</p></div>

Q: Does basement insulation need a vapor barrier?

• <div><p>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 <a href="https://www.angi.com/articles/how-to-install-insulation.htm">install insulation</a> or purchase insulation that comes prebuilt with a moisture barrier to avoid water damage in your insulation and costly mold and water remediation expenses. </p><p> </p></div>

Q: Are there downsides to waterproofing the basement?

• <div><p>Some basement waterproofing methods can actually cause your water or moisture problems to get worse, which is why it&rsquo;s so important to call in a professional who knows how to solve your underlying issue and use the appropriate waterproofing methods. An example of this would be applying latex waterproofing paint to the insides of your basement walls without fixing the water issue outside. Doing so can trap moisture in the basement walls, which can promote mold growth, peeling paint, and even damaged concrete. However, when done by a professional, the only downside to basement waterproofing is the up-front cost. </p></div>

Enter your zip and get matched with up to 5 pros

Need a pro for your basement waterproofing project in Helena, MT?

Select your specific project to find the pro for you.

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
Request a quote
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
Request a quote
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
Request a quote
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
Request a quote
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
Request a quote
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
Request a quote
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
Request a quote
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
Request a quote
Reviewed in March 2018
Just adding photos to our review of our bedroom suite with basement below —
Homeworks
Request a quote
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
Request a quote

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

3 neighbors recently requested a quote

Recommended by72%of homeowners

Request Quote

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

Request Quote

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

Request Quote

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

Request Quote

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

Request Quote

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

Request Quote

Basement Waterproofing FAQs, answered by experts

You don’t always need to install a dehumidifier in your encapsulated crawl space, but it might be a good idea in certain instances. If you notice obvious signs of condensation, mold, or musty smells permeating from your crawl space, a dehumidifier can help. It’s ideal for homes in humid areas.

In a worst case scenario, structural damage like rust on metal beams, rotting wood, and swelling on doors and windows can signal moisture problems that would benefit from a dehumidifier.

Topical sealers adhere to the surface of concrete to create a protective layer. In many cases, this is all you need for concrete that sees light to moderate traffic, such as your basement. Penetrating sealers, on the other hand, bond with the free lime in the top layer of concrete to form calcium silicate, which prevents liquid from passing through. This type of sealer protects the surface from water, oil, and gasoline spills.

You should take care of any sign of water in your basement, whether it’s dampness after heavy rain or puddles of water on the floor. Besides potentially causing a health hazard, the moisture can damage your home’s structure and foundation. Furthermore, mold can grow quickly and spread throughout the rest of your home. With mold remediation costs ranging between $1,200 and $3,400, it’s best to avoid mold issues by fixing the leak.

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.

Some basement waterproofing methods can actually cause your water or moisture problems to get worse, which is why it’s so important to call in a professional who knows how to solve your underlying issue and use the appropriate waterproofing methods. An example of this would be applying latex waterproofing paint to the insides of your basement walls without fixing the water issue outside. Doing so can trap moisture in the basement walls, which can promote mold growth, peeling paint, and even damaged concrete. However, when done by a professional, the only downside to basement waterproofing is the up-front cost.

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

Lawrence Bonk
•
Oct 16, 2026Oct 16, 2026
How Much Does Basement Waterproofing Cost? [2026 Data]
Need to fix basement water problems or safeguard your home from damage in the future? Use this basement waterproofing cost guide to budget appropriately.
Rachel Hoffman
•
Oct 29, 2026Oct 29, 2026
How Much Does It Cost to Finish a Basement? [2026 Data]
An unfinished basement has a lot of potential for a family room or guest suite. So how much does it cost to finish a basement? Read on for all cost factors.
Dan Simms
•
Oct 28, 2026Oct 28, 2026
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.
D.P. Taylor
•
Jul 9, 2026Jul 9, 2026
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.
Dan Simms
•
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.
Dan Simms
•
Jul 8, 2026Jul 8, 2026
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.