Walls Waterproofing in Bismarck, ND
Protecting your home's foundation from water intrusion is crucial in Bismarck, ND. Our walls waterproofing services keep your basement and crawl spaces dry and safe.
- Free Estimates
- Licensed & Insured
- Fast Leak Detection
- Shower Wall Membrane Systems
Damp Walls or Leaking Showers? Get Them Sealed in Bismarck, ND.
Call today and we will trace the moisture with meters and thermal imaging before recommending any waterproofing.
Your Trusted Source for Walls Waterproofing in Bismarck, ND
When you need effective walls waterproofing for your Bismarck, ND property, HPN Plumbing is the team to call. We use proven techniques and quality materials to prevent moisture penetration, protecting your home's structure and preventing mold growth.
Our expertise includes:
- Interior drainage system installation
- Foundation crack repair and sealing
- Drainage system installation

Additional Plumbing Maintenance Services in Bismarck, ND
Our maintenance and specialty plumbing services in Bismarck, ND catch small problems before they become emergencies.

Customers
Why Choose HPN Plumbing for Walls Waterproofing in Bismarck, ND?
Choosing the right waterproofing contractor for your Bismarck home is key for long-term protection. We use proven techniques and high-quality materials for durable results.
- Mold Prevention, Drying and sealing walls promptly keeps mold from taking hold.
- Quality Materials, We use long-lasting, proven waterproofing membranes and sealants for lasting protection.
- Local Knowledge, We understand the conditions North Dakota homes face, including soil movement and heavy rain events.
Citywide Coverage
Whether you have a single-story slab home or a property with a basement, we can protect your walls. We serve homeowners, landlords and businesses throughout Bismarck.
Experienced Team
Each member of our crew is thoroughly trained in diagnosing and addressing water intrusion issues in foundation walls. Their expertise means a precise and lasting waterproofing installation.
Safety-First Approach
Safety is a top priority for every walls waterproofing project we undertake. We adhere strictly to all local building codes and safety regulations in Bismarck, ND to protect both our team and your property.
Trusted Certified Bismarck Plumbing Services Professionals
At HPN Plumbing, we take pride in providing licensed, certified plumbing services throughout Bismarck, ND. Backed by leading industry credentials, our experienced plumbers combine technical skill with genuine customer care. Whether it is repair, installation, or maintenance, we follow strict safety and quality standards to deliver long-lasting results you can trust.
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PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationProfessional Walls Waterproofing Services in Bismarck, ND
Laundry Room and Utility Wall Waterproofing in Bismarck, ND
Washing machine hoses, utility sinks and water heaters can all leak into nearby walls. We replace burst-prone rubber hoses with braided stainless hoses and install leak pans and shutoff valves. Walls around water heaters and laundry boxes can be sealed to resist water damage. These small upgrades prevent costly drywall repairs.

Waterproofing for Older Homes in Bismarck, ND
Older homes, especially those built before modern waterproofing standards, are particularly prone to water intrusion. Newer homes around Bismarck typically use PEX supply lines, which handle freezing better than rigid pipe and are simpler to repair. Many older foundations may lack adequate exterior drainage or proper sealing. We specialize in assessing and upgrading waterproofing systems for these properties, often combining exterior excavation with interior drainage solutions. We respect the existing structure while installing modern, effective waterproofing, with attention to the challenges of older brick and stone foundations.
Exterior Block Wall Waterproofing in Bismarck, ND
Block and stem walls often show efflorescence, which is the white mineral crust left when water passes through masonry. Irrigation and sprinklers aimed at the house are common culprits. We adjust or reroute irrigation, clean the wall and apply a breathable masonry sealer or elastomeric coating. Proper grading and drip line placement help keep the wall dry for good.
Crawl Space Vapor Barriers in Bismarck
Many homes in Bismarck have crawl spaces, which are very prone to moisture issues. Installing a heavy-duty vapor barrier on crawl space walls and floors is a key waterproofing strategy. This thick polyethylene sheeting prevents ground moisture from evaporating into the crawl space, protecting subflooring and joists and improving indoor air quality. It's an effective way to control humidity and prevent wood rot.
Interior Walls Waterproofing in Bismarck, ND
Interior walls waterproofing focuses on managing water that has already passed through the foundation walls. This typically involves installing an interior drainage system, often called a French drain, along the perimeter of the basement floor. Water is collected and channeled to a sump pump, which then sends it safely away from the foundation. While not preventing water from entering the wall, it effectively stops it from pooling inside your living space. This solution is less disruptive than exterior excavation and is suitable where exterior access is limited.
Below-Grade and Basement Wall Waterproofing in Bismarck
Newer homes around Bismarck typically use PEX supply lines, which handle freezing better than rigid pipe and are easier to repair. Wherever a home has a basement or below-grade walls, heavy rain and snowmelt can push water through foundation walls and cracks. We seal cracks with injection products, apply interior or exterior waterproofing and install drainage where needed. A sump pump may be added if groundwater builds up.
Commercial Walls Waterproofing in Bismarck
Beyond residential properties, HPN Plumbing also offers walls waterproofing services for commercial buildings in Bismarck. Protecting commercial basements, equipment rooms, and underground parking garages from water damage is vital to business operations. We understand the need for minimal disruption and efficient project completion for commercial clients. Our team works with property managers and business owners to implement robust waterproofing solutions that fit the demands of commercial structures and their code requirements.

Drainage System Integration in Bismarck, ND
Lasting walls waterproofing often requires a robust drainage system to divert water away from your foundation. This can include interior perimeter drains that channel water to a sump pump, or exterior French drains that collect surface water. Our team designs and installs custom drainage solutions for Bismarck, ND properties, so water is efficiently managed and moved away from your home's vulnerable areas.
Walls Waterproofing Near Me in Bismarck, ND
We understand the building styles and irrigation habits common around Bismarck. That local knowledge helps us spot the source of wall moisture fast. It also means we can return easily for follow-up or warranty work.
When you need immediate and effective walls waterproofing solutions, don't hesitate to call HPN Plumbing. We pride ourselves on prompt service and lasting results, keeping your Bismarck home dry and protected. Reach out today for a consultation.
HPN Plumbing at a Glance
- Fully licensed plumbing team covering Bismarck, ND
- Same-day appointments and 24/7 emergency response
- Clear written estimates, no hidden fees
- 4.9-star rated by 408+ North Dakota customers
Bismarck Map
Bismarck Information
- Population
- 75,092
- Area codes
- 701/406/320
- Service area
- Bismarck and communities within 40 miles
- Nearby
- Mandan, Dickinson, Jamestown, Minot
In Bismarck, ND, irrigation runoff, storms and hard-working showers push moisture into block, stucco and drywall, so proper wall waterproofing protects your home's structure.
Expert Services
Trust our professionals for reliable HPN Plumbing solutions in Bismarck, ND.
Our Specialized Plumbing Services in Bismarck, ND
At HPN Plumbing, we provide a complete range of plumbing services across Bismarck, ND. From leak detection to full system installations, our team ensures fast, precise, and affordable service for both residential and commercial properties. Explore our core services below:
How Our Walls Waterproofing Process Works in Bismarck, ND
Our walls waterproofing process is designed for the best results and minimal disruption to your Bismarck home. We follow a clear, step-by-step approach for lasting protection.
Request a Quote
Call (701) 403-1348 and describe the stains, damp spots or leaks you are seeing. We schedule an inspection and explain what to expect.
Find the Source
We use moisture meters, thermal imaging and leak tests to locate where water enters. You get a written plan for repair and waterproofing.
Repair and Seal
We fix the leak, dry the area and apply the correct membrane or coating. Showers and pans are flood tested before finishing.
Frequently Asked Questions About Walls Waterproofing in Bismarck
The cost of walls waterproofing in Bismarck, ND can vary a great deal based on the method used, the extent of the damage, and the size of your foundation. Basic crack sealing might range from $300 to $800 per crack, while a full exterior foundation waterproofing project could be $8,000 to $20,000 or more. Interior drainage systems with a sump pump typically fall between $4,000 and $12,000. We provide transparent, itemized quotes after a thorough inspection.
Look for signs such as damp or wet spots on basement or crawl space walls, a musty odor, visible mold or mildew growth, efflorescence, a white powdery residue, on concrete or brick, and standing water. Cracks in foundation walls or bowing walls also indicate potential water entry issues. If you notice any of these, it's wise to get a professional assessment.
We commonly install Schluter Kerdi, Custom RedGard, Laticrete Hydro Ban and similar systems. The right choice depends on your shower design and tile. We follow each manufacturer's installation steps to keep the warranty in force.
The duration of a walls waterproofing project varies depending on its scope. Minor crack repairs might take a few hours, while an interior drainage system could take 1 to 3 days. A full exterior foundation waterproofing project, involving excavation around the entire home, could take 3 to 7 days or more. We provide a clear timeline during our initial consultation.
Yes, HPN Plumbing stands behind the quality of our work. We offer comprehensive warranties on our walls waterproofing installations, covering both materials and labor. The warranty details will be outlined in your service agreement, giving you peace of mind about your investment. Our goal is your complete satisfaction and a dry, healthy home.
For extensive walls waterproofing projects that involve excavation, significant structural changes, or changes to drainage systems, a permit from the Bismarck building department may be required. We will advise you on any required permits and help with the application process so all work complies with local codes.
HPN Plumbing works with reputable manufacturers known for high-quality waterproofing products. We commonly use products from brands like Xypex, Tremco, and Sika for their proven effectiveness and durability, from crystalline admixtures to elastomeric membranes and sealants. We select the best product for your foundation type and conditions.
Walls waterproofing is a key step in preventing future mold growth by eliminating the moisture source. However, it does not remove existing mold. If mold is already present, it will need to be professionally remediated before or along with the waterproofing process. Once the area is dry and mold-free, waterproofing will help make sure it stays that way.
What People Are Saying About Our Plumbing Experts?

Laura S.
I scheduled a water heater replacement, and the team made the process smooth and affordable. The new unit works perfectly, and they cleaned up after completing the job.
Water Heater Replacement · Minot, ND
Mark T.
When our office needed drain cleaning, HPN Plumbing provided quick, reliable service. The plumber arrived on time and made sure every drain flowed perfectly before leaving. Very satisfied.
Drain Cleaning · Dickinson, ND
Daniel K.
A pipe burst at 11 pm and they actually answered. The plumber showed up within the hour, shut everything down, and had us back to normal the next morning. Could not ask for more.
Emergency Plumbing · Minot, ND
James P.
Our commercial plumbing system had a leak under the sink, and HPN Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · Minot AFB, ND
Emily R.
I called HPN Plumbing for plumbing repair, and the technician was fast, polite, and thorough. They explained the problem clearly and fixed it the same day. I will definitely hire them again. Highly recommended!
Plumbing Repair · Devils Lake, ND
Robert G.
The trenchless sewer replacement saved our front yard. They walked us through the camera inspection footage first so we knew exactly what we were paying for.
Sewer Line Replacement · Devils Lake, ND













