Walls Waterproofing in Williston, ND
At HPN Plumbing, we provide lasting walls waterproofing solutions for homeowners across Williston, ND to keep your foundation dry.
- Licensed, Insured Technicians
- Licensed & Insured
- Licensed & Insured
- Quick Leak Detection
Professional Walls Waterproofing Solutions in Williston, ND.
We fix the leak first, then apply the right membrane or coating so the problem doesn't return.
Professional Walls Waterproofing for Homes in Williston, ND
HPN Plumbing combines plumbing repair with waterproofing so you only pay once. Whether water is seeping from a failed shower pan, a leaking pipe in a wall cavity or irrigation soaking a block foundation, we repair the cause and seal the wall the right way.
Our expertise includes:
- Below-grade foundation wall waterproofing for basements and crawlspaces
- Foundation crack repair and sealing
- Interior and exterior wall sealing

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

Customers
Why Choose HPN Plumbing for Walls Waterproofing in Williston, ND?
We use moisture meters and thermal cameras to map wet areas without tearing out more drywall than needed. That keeps repair costs and mess under control.
- Proven Membranes, We install manufacturer-approved systems that are designed for wet areas.
- Lasting Solutions, Our team uses durable materials and techniques designed for reliable, long-term water protection.
- Mold Prevention, Drying and sealing walls quickly keeps mold from taking hold.
Citywide Coverage
HPN Plumbing serves every neighborhood in Williston for walls waterproofing. Water issues don't care about zip codes, and our team is always ready to respond promptly to your waterproofing needs.
Experienced Team
Each member of our crew is fully trained in diagnosing and addressing water intrusion issues in foundation walls. Their expertise means a precise and lasting waterproofing installation.
Safety-First Approach
All our waterproofing work is performed with meticulous attention to detail and in full compliance with North Dakota plumbing and construction standards. You can have peace of mind knowing your home is in safe hands.
Trusted Certified Williston Plumbing Services Professionals
At HPN Plumbing, we take pride in providing certified plumbing services throughout Williston, 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 CertificationLasting Walls Waterproofing Solutions in Williston, ND
Laundry Room and Utility Wall Waterproofing in Williston, 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 Williston, ND
Older homes, especially those built before modern waterproofing standards, are especially prone to water intrusion. Newer homes around Williston 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 take care to respect the existing structure while installing modern, effective waterproofing, with attention to the challenges of older brick and stone foundations.
Commercial Wall Waterproofing in Williston
Restaurants, gyms, salons and offices often have restrooms, locker rooms and kitchens with constant water exposure. We waterproof commercial showers, mop sink walls and restroom wet walls with durable membranes. Work can be scheduled after hours to limit downtime. We also repair the plumbing behind those walls when leaks are discovered.
Interior Walls Waterproofing in Williston, ND
Interior walls waterproofing focuses on managing water that has already passed through the foundation walls. This usually 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 stops it from pooling inside your living space. This solution is less disruptive than exterior excavation and works well where exterior access is limited.
Exterior Foundation Waterproofing in Williston
Exterior foundation waterproofing involves excavating around the foundation to apply a waterproof membrane or coating directly to the wall. This is often the most effective method for preventing water from entering the basement or crawl space. We use high-quality asphalt-modified polyurethane membranes or polymer-based coatings that resist hydrostatic pressure and soil movement. Basements are standard in most homes, and many rely on sump pumps to manage groundwater during wet springs. Proper drainage solutions, such as French drains, are also added to divert water away.
Crawl Space Vapor Barriers in Williston
Many homes in Williston have crawl spaces, which are highly susceptible 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.
Waterproofing Costs vs. Repeat Water Damage in Williston, ND
Waterproofing a shower or wall costs much less than repeated drywall, cabinet and flooring repairs. Ignoring moisture also invites mold, which can be expensive to remediate. A typical shower wall waterproofing project falls in the low thousands, while exterior block sealing varies with wall size. We give you a written quote so you can compare options side by side.

Below-Grade and Basement Wall Waterproofing in Williston
Newer homes around Williston 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 collects.
Walls Waterproofing Near Me in Williston, ND
We understand the building styles and irrigation habits common around Williston. That local knowledge helps us spot the source of wall moisture quickly. It also means we can return easily for follow-up or warranty work.
We are deeply familiar with the homes and ground conditions throughout Williston, making us the ideal partner for your walls waterproofing needs. Our local experience means the solutions we provide fit your property and the local climate.
HPN Plumbing at a Glance
- Licensed and insured plumbers serving Williston, ND
- 24/7 emergency service with same-day scheduling
- Upfront, flat-rate pricing before work begins
- 4.9-star rated by 408+ North Dakota customers
Williston Map
Williston Information
- Population
- 27,706
- Area codes
- Local
- Service area
- Williston and communities within 40 miles
- Nearby
- Watford City, Dickinson, Minot AFB, Minot
Effective walls waterproofing is important for homes in Williston, ND because shifting soil, heavy rains and dry spells can all put pressure on foundation walls.
Expert Services
Trust our professionals for reliable HPN Plumbing solutions in Williston, ND.
Our Specialized Plumbing Services in Williston, ND
At HPN Plumbing, we provide a complete range of plumbing services across Williston, 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 Williston, ND
We take a thorough approach to walls waterproofing, with every step done with precision and care for your Williston, ND property.
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 next.
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 we finish.
Frequently Asked Questions About Walls Waterproofing in Williston
The cost of walls waterproofing in Williston, ND can vary widely, typically ranging from $3,000 for interior crack sealing to $15,000 or more for extensive exterior foundation waterproofing with drainage systems. Factors like the size of the area, severity of water damage, chosen methods, and accessibility all affect the final price. We provide detailed, transparent quotes after a thorough inspection.
Yes. Sealing a wall with an active leak behind it traps water and causes more damage. We always repair the leak and dry the cavity first.
Skilled DIYers can roll on liquid membranes, but mistakes at seams, corners and drains often lead to leaks. Shower pans also require correct slope and flood testing. Professional installation reduces the risk of hidden water damage.
When professionally installed using high-quality materials, walls waterproofing can last for decades, often 20 to 50 years or even longer. The lifespan depends on the materials used, the quality of installation, and environmental factors like soil movement and water exposure. Modern membranes and sealants are designed for lasting durability.
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.
Waterproofing prevents the moisture mold needs to grow. Existing mold should be removed and the area dried before sealing. We remove affected materials when needed and recommend remediation for larger growth.
Yes. Our workmanship is warrantied, and many membrane systems carry their own manufacturer warranty when installed correctly. We explain the coverage in your written estimate.
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 inspection.
What People Are Saying About Our Plumbing Experts?

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 · Williston, ND
Patricia H.
We had a slab leak that two other companies could not find. HPN Plumbing located it in under an hour, explained our options, and the price matched the quote to the dollar.
Slab Leak Repair · Bismarck, ND
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 · Mandan, ND
Sofia M.
Two new toilets installed in one visit, no mess left behind, and the tech even adjusted a faucet he noticed was dripping. Fair pricing and really friendly.
Toilet Installation · Watford City, 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 · Watford City, 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 · Watford City, ND













