Walls Waterproofing in Longmont, CO
Protect your Longmont, CO home from expensive water damage with professional walls waterproofing services from GFR Plumbing.
- Long-Lasting Materials
- Licensed & Insured
- Licensed & Insured
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Expert Walls Waterproofing Solutions in Longmont, CO.
We fix the leak first, then apply the right membrane or coating so the problem doesn't return.
Lasting Walls Waterproofing for Showers, Block and Foundations in Longmont, CO
GFR 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 properly.
Our expertise includes:
- Below-grade foundation wall waterproofing for basements and crawlspaces
- Exterior block and stem wall sealing against irrigation runoff
- Drainage system design and installation

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

Customers
Why Choose GFR Plumbing for Walls Waterproofing in Longmont, CO?
Waterproofing a wall without fixing the leak behind it only hides the problem. As plumbers, we find and repair the source before sealing anything.
- Quality Materials, We use long-lasting, proven waterproofing membranes and sealants for lasting protection.
- Proven Membranes, We install manufacturer-approved systems that are rated for wet areas.
- Lasting Solutions, Our team uses proven materials and techniques designed for superior, long-term water protection.
Citywide Coverage
GFR Plumbing serves every neighborhood of Longmont, 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 includes plumbers and waterproofing technicians who have rebuilt hundreds of leaking showers and damp walls. They know how water travels through block, stucco and drywall.
Safety-First Approach
Shower waterproofing follows plumbing code and manufacturer guidelines for slope, curb height and drain connections. We flood test pans before tile is installed.
Trusted Certified Longmont Plumbing Services Professionals
At GFR Plumbing, we take pride in providing certified plumbing services throughout Longmont, CO. Backed by recognized 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 CertificationReliable Walls Waterproofing Services in Longmont, CO
Interior Walls Waterproofing in Longmont, CO
Interior walls waterproofing focuses on managing water that has already penetrated 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.

Below-Grade and Basement Wall Waterproofing in Longmont
Many newer homes across Colorado use PEX with manifold systems, which handle freezing better than rigid pipe but still require protection. 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.
Exterior Block Wall Waterproofing in Longmont, CO
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 frequent 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.
Cost-Effective Waterproofing Solutions in Longmont, CO
We believe in providing honest and cost-effective walls waterproofing solutions without cutting corners on quality. Our team will conduct a thorough assessment of your property in Longmont to recommend the most appropriate and economical waterproofing strategy. From detailed estimates to explaining the long-term savings of preventing water damage, we make sure you understand your investment. We use durable materials and efficient techniques to provide lasting protection, reducing the chance of future repairs. Our goal is to deliver value and peace of mind.
Shower Wall Waterproofing in Longmont
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 reinforcement before new tile is set.
Foundation Crack Repair & Sealing in Longmont
Even minor cracks in foundation walls can allow significant water intrusion. Our services include crack repair using epoxy or polyurethane injection to seal these entry points for good. This method fills the entire depth of the crack, restoring strength and preventing water penetration. We address both vertical and horizontal cracks, knowing that horizontal cracks can indicate structural issues that need a thorough assessment before sealing. Addressing these early prevents further water damage and expensive future repairs.
Basement Wall Sealing in Longmont, CO
Basement wall sealing is a critical part of walls waterproofing. Higher elevations lower the boiling point of water, which affects water heater settings and pressure relief performance in mountain homes. 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, healthier environment in your Longmont, CO basement.

Crawl Space Encapsulation in Longmont
Crawl space encapsulation involves sealing the crawl space entirely with heavy-duty vapor barriers and often includes a dehumidifier. This not only waterproofs the walls but also controls humidity, stopping mold growth and wood rot in the crawl space. Higher elevations lower the boiling point of water, which affects water heater settings and pressure relief performance in mountain homes. An encapsulated crawl space can noticeably improve indoor air quality and energy efficiency by keeping moisture from moving up into the home. We use durable, reinforced poly sheeting for walls and floors, sealed at all seams and penetrations.
Expert Walls Waterproofing Near Me in Longmont, CO
We understand the building styles and irrigation habits common around Longmont. 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.
When searching for 'walls waterproofing near me' in Longmont, CO, GFR Plumbing is your local, reliable choice. We pride ourselves on fast response times and thorough service, understanding the urgency when water threatens your home's foundation. Our team is always ready to bring professional solutions right to your doorstep.
GFR Plumbing at a Glance
- Fully licensed plumbing team covering Longmont, CO
- Same-day appointments and 24/7 emergency response
- Upfront, flat-rate pricing before work begins
- 4.8-star rated by 750+ Colorado customers
Longmont Map
Longmont Information
- Population
- 98,630
- Area codes
- 303/720/970
- Service area
- Longmont and communities within 40 miles
- Nearby
- Lafayette, Boulder, Broomfield, Loveland
Proper walls waterproofing is important for homes in Longmont, CO because shifting soil, heavy rains and dry spells can all put stress on foundation walls.
Expert Services
Trust our professionals for reliable GFR Plumbing solutions in Longmont, CO.
Our Specialized Plumbing Services in Longmont, CO
At GFR Plumbing, we provide a complete range of plumbing services across Longmont, CO. 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 Longmont, CO
We take a thorough approach to walls waterproofing, with every step done with precision and care for your Longmont, CO property.
Request a Quote
Start by calling us at (720) 727-9398 or filling out our online form to schedule an initial consultation. We'll discuss your concerns and set up a good time for an on-site assessment.
Detailed Inspection
Our experts will conduct a careful inspection of your foundation walls, identifying the source of water intrusion and assessing the extent of any damage. We'll explain our findings clearly.
Custom Solution
Based on the inspection, we'll design a customized walls waterproofing plan for your home's needs. This includes selecting the most effective materials and techniques.
Frequently Asked Questions About Walls Waterproofing in Longmont
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 usually 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.
Look for bubbling paint, soft drywall, stained baseboards and musty odors. White crust on block or stucco walls is another sign of moisture moving through. Loose tiles or cracked grout in a shower also mean water is getting behind.
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 trusted names known for their durability and effectiveness in preventing water penetration.
Yes, GFR Plumbing stands behind the quality of our work. We offer full warranties on our walls waterproofing installations, covering both materials and labor. The warranty details will be outlined in your service agreement, giving you confidence 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 Longmont 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.
Sprinklers and drip lines aimed at the house are the most common cause. Heavy storms and poor grading also send water toward walls. Masonry absorbs that water and leaves mineral deposits as it dries.
When professionally installed using high-quality materials, walls waterproofing can last for many 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.
What People Are Saying About Our Plumbing Experts?

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 · Longmont, CO
Patricia H.
We had a slab leak that two other companies could not find. GFR Plumbing located it in under an hour, explained our options, and the price matched the quote to the dollar.
Slab Leak Repair · Boulder, CO
James P.
Our commercial plumbing system had a leak under the sink, and GFR Plumbing handled it professionally. The plumbers arrived quickly and restored everything without disruption to our customers.
Commercial Plumbing · Boulder, CO
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 · Broomfield, CO
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 · Longmont, CO
Mark T.
When our office needed drain cleaning, GFR Plumbing provided quick, reliable service. The plumber arrived on time and made sure every drain flowed perfectly before leaving. Very satisfied.
Drain Cleaning · Longmont, CO













