Walls Waterproofing in Kent, WA
Damp drywall, peeling paint or white crust on block walls? We find the water source and waterproof walls in Kent, WA for the long haul.
- Quick Moisture Source Diagnosis
- Licensed & Insured
- Fast Leak Detection
- Professional Foundation Repair
Damp Walls or Leaking Showers? Get Them Sealed in Kent, WA.
Call today and we will trace the moisture with meters and thermal imaging before recommending any waterproofing.
Professional Walls Waterproofing for Homes in Kent, WA
At FHN Plumbing, we provide full-service walls waterproofing services designed to safeguard your home's structure. From exterior foundation coatings to interior drainage systems, we address all potential points of water entry to keep your Kent property dry.
Our expertise includes:
- Foundation crack repair and sealing
- Interior and exterior wall sealing
- Shower wall and pan membrane waterproofing before tile installation

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

Customers
Why Choose FHN Plumbing for Walls Waterproofing in Kent, WA?
Choosing FHN Plumbing means you're investing in long-term protection for your property. We understand the waterproofing needs of homes in Kent and implement solutions that last.
- Source First, We repair the plumbing or drainage issue before applying any waterproofing.
- Local Knowledge, We understand the challenges Washington homes face, including soil movement and heavy rain events.
- Home Protection, Walls waterproofing prevents structural damage and mold growth and preserves your property's value and indoor air quality.
Citywide Coverage
FHN Plumbing serves every neighborhood of Kent, so homeowners across the area have access to top-tier walls waterproofing services. Whether you are in an older district or a newer subdivision, our team is ready to respond.
Experienced Team
Our team at FHN Plumbing is made up of experienced and certified plumbers who specialize in foundation and walls waterproofing. We stay up to date on the latest methods and technologies to provide the most reliable solutions.
Safety-First Approach
Safety is a top priority for every walls waterproofing project we take on. We stick closely to all local building codes and safety regulations in Kent, WA to protect both our team and your property.
Trusted Certified Kent Plumbing Services Professionals
At FHN Plumbing, we take pride in providing certified plumbing services throughout Kent, WA. 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.
Call Us Now
PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationReliable Walls Waterproofing Services in Kent, WA
Interior Walls Waterproofing in Kent, WA
Interior walls waterproofing focuses on managing water that has already penetrated 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 works well where exterior access is limited.

Shower Wall Waterproofing in Kent
Tile and grout are not waterproof on their own, so water reaches the backer board in every shower. If the walls were built without a proper membrane, moisture soaks into studs and drywall. We remove failing tile, install cement board or foam board and apply a membrane such as Schluter Kerdi, RedGard or Hydro Ban. Seams, corners and niches get extra attention before new tile is set.
Basement Wall Sealing in Kent, WA
Basement wall sealing is a key part of walls waterproofing. Washington has two very different climates, with long, wet and mild seasons in the west and hot, dry summers and cold winters in the east. We apply high-quality sealants to porous concrete and masonry walls to prevent moisture from wicking through and causing dampness, mold, or musty odors. This service can be performed alone or as part of a larger waterproofing system, offering a drier and healthier environment in your Kent, WA basement.
Waterproofing Costs vs. Repeat Water Damage in Kent, WA
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.
Waterproofing for Older Homes in Kent, WA
Older homes, especially those built before modern waterproofing standards, are particularly prone to water intrusion. Mid-century homes often have galvanized supply lines and cast iron drains, while some 1980s and 1990s homes were plumbed with gray polybutylene. 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 Kent
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.
Drainage System Integration in Kent, WA
Effective 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 Kent, WA properties, so water is efficiently managed and moved away from your home's vulnerable areas.

Plumbing Leak Behind Walls in Kent
A slow drip from a shower valve, supply stub or drain fitting can soak a wall for months before you notice. We locate the leak with moisture meters, thermal imaging and pressure tests. The damaged section of pipe or valve is replaced, and wet drywall is cut out and dried. Once the cavity is dry, we restore the wall and seal any wet-area surfaces.
Expert Walls Waterproofing Near Me in Kent, WA
When you need immediate and effective walls waterproofing solutions, don't hesitate to call FHN Plumbing. We pride ourselves on timely service and lasting results, keeping your Kent home dry and protected. Reach out today for a consultation.
Our waterproofing crews are based locally, so we can inspect damp walls promptly and get repairs scheduled fast. We bring moisture meters and thermal cameras to every visit. That lets us give you answers the same day.
FHN Plumbing at a Glance
- Fully licensed plumbing team covering Kent, WA
- Same-day appointments and 24/7 emergency response
- Clear written estimates, no hidden fees
- 4.9-star rated by 382+ Washington customers
Kent Map
Kent Information
- Population
- 133,378
- Area codes
- 253/425/564
- Service area
- Kent and communities within 40 miles
- Nearby
- Auburn, Renton, Federal Way, Burien
Proper walls waterproofing protects homes in Kent, WA from rain, soil pressure on foundations, and the damp conditions that encourage mold growth in unsealed basements and crawl spaces.
Expert Services
Trust our professionals for reliable FHN Plumbing solutions in Kent, WA.
Our Specialized Plumbing Services in Kent, WA
At FHN Plumbing, we provide a complete range of plumbing services across Kent, WA. 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 Kent, WA
Here is how we take your wall from damp and stained to dry and protected.
Request a Quote
Contact us at (425) 491-3131 to schedule a detailed inspection of your property. Our experts will assess your foundation, identify water entry points, and discuss your specific needs.
Thorough Inspection
We conduct a complete evaluation of your foundation walls, checking for cracks, signs of hydrostatic pressure, and existing drainage issues. This helps us design the most effective waterproofing plan.
Tailored Solution
Based on our findings, we propose a tailored waterproofing strategy, which may include exterior coatings, interior drainage, or crack repair. We use proven methods and quality materials.
Frequently Asked Questions About Walls Waterproofing in Kent
Shower wall waterproofing with a membrane system typically runs $1,200 to $3,500 including demolition and backer board, not counting new tile. Exterior block wall sealing often costs $800 to $3,000 depending on size. Below-grade foundation waterproofing generally ranges from $2,500 to $8,000.
A shower wall waterproofing project typically takes two to four days, including drying time between coats. Exterior block sealing can often be completed in a day. Larger foundation jobs may take several days.
Shower remodels that change plumbing or drain locations often require a permit. Simple membrane replacement may not. We check local requirements and pull permits when needed.
Yes, FHN Plumbing stands behind the quality of our walls waterproofing services. We offer comprehensive warranties on our materials and workmanship, giving you peace of mind. Warranty details will be provided with your project proposal, outlining the coverage and duration of your waterproofing system.
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 lowers the risk of hidden water damage.
For extensive walls waterproofing projects that involve excavation, major structural changes, or changes to drainage systems, a permit from the Kent 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.
The duration of a walls waterproofing project varies significantly. Smaller jobs like interior crack sealing might take a day or two, while extensive exterior waterproofing with excavation and drainage system installation could take several days to over a week. We'll provide a clear timeline during your first visit.
We use a range of high-performance waterproofing membranes and coatings depending on the application and foundation type. These can include liquid asphalt-modified polyurethane, rubberized asphalt membranes, bentonite clay systems, and crystalline coatings. Brands often include well-known names known for their durability and effectiveness in preventing water penetration.
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 · Kent, WA
Mark T.
When our office needed drain cleaning, FHN Plumbing provided quick, reliable service. The plumber arrived on time and made sure every drain flowed perfectly before leaving. Very satisfied.
Drain Cleaning · Renton, WA
Emily R.
I called FHN 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 · Auburn, WA
James P.
Our commercial plumbing system had a leak under the sink, and FHN Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · Tacoma, WA
Patricia H.
We had a slab leak that two other companies could not find. FHN Plumbing located it in under an hour, explained our options, and the price matched the quote to the dollar.
Slab Leak Repair · Burien, WA
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 · Federal Way, WA













