Slab Leak Repair in Longmont, CO
Many homes in Longmont, CO sit on concrete slabs with water lines below. When those lines leak, our plumbers find the spot and fix it right.
- Fast Leak Detection
- Colorado-Trained Plumbers
- Reroutes in PEX or Copper
- Insurance Claim Support
Need Professional Slab Leak Repair in Longmont, CO?
We pinpoint the leak to within inches, so any concrete we open is small and right on target.
Your Local Source for Slab Leak Repair in Longmont, CO
GFR Plumbing has repaired slab leaks under tile, carpet, wood and polished concrete. We know that the biggest cost is often the flooring, not the plumbing, so we choose the method that reduces damage. You get written prices for every option before we start.
Our expertise includes:
- Acoustic and thermal pinpointing to limit concrete cutting
- Accurate electronic leak detection
- Foundation-safe repair methods

Additional Plumbing Repair Services in Longmont, CO
We offer expert plumbing repair services across Longmont, CO to fix leaks, restore flow, and keep your system running smoothly.

Customers
Why Choose GFR Plumbing for Slab Leak Repair in Longmont, CO?
Choosing the right plumbing contractor for slab leak repair is critical because of the potential for serious property damage. Our team is equipped with the right tools and expertise these difficult repairs require.
- Advanced Detection, We use sensitive acoustic and thermal imaging equipment to precisely locate hidden leaks under your foundation, minimizing exploratory digging.
- Under-Floor Accuracy, We pinpoint leaks closely so concrete and flooring damage is kept small.
- Advanced Tools, Our technicians use advanced leak detection equipment to find hidden leaks with minimal disruption.
Citywide Coverage
From older ranch homes to newer tract and custom builds, we fix slab leaks in every neighborhood of Longmont. We bring all the equipment needed on the first visit.
Experienced Team
Our reroute crews are skilled at running new PEX through attics and walls with small, clean openings. They work efficiently even in cramped attics.
Safety-First Approach
All repairs and reroutes meet local plumbing code, with proper insulation, supports and fittings. Attic lines are insulated to protect against heat and cold.
Trusted Certified Longmont Plumbing Services Professionals
At GFR Plumbing, we take pride in providing licensed, certified plumbing services throughout Longmont, CO. 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 Slab Leak Repair Services in Longmont, CO
Sewer Line Slab Leak Repair in Longmont, CO
Slab leaks aren't always about clean water pipes, since sewer lines can also leak under your foundation. These leaks pose significant health risks and can cause extensive damage. We specialize in detecting and repairing sewer line slab leaks, using camera inspections to identify the exact problem area. Our methods ensure proper waste removal and prevent contamination in your Longmont, CO property, following health and safety codes.

Slab Leak Reroute in Longmont
Rerouting is often the best long-term choice, especially with older copper lines. We abandon the leaking line under the slab and run a new PEX line through the attic and walls. Openings are small and placed where patching is simplest. Reroutes eliminate future leaks in that section of pipe.
Direct Slab Penetration Repair in Longmont, CO
When a slab leak is directly accessible and localized, direct slab penetration is often the most practical repair method. This involves carefully cutting a small section of your concrete slab to access and repair or replace the damaged pipe section. Our team makes sure the repair is fully compliant with Colorado plumbing codes and the slab is properly restored, preventing future issues. We take great care to contain dust and debris during this process in your Longmont home.
Pipe Rerouting and Repiping in Longmont
For more extensive damage, multiple leaks, or pipes that are too old and corroded to repair reliably, pipe rerouting is a long-term solution. This involves abandoning the leaking line under the slab and installing a new pipe through the walls or attic. This method skips the problem area entirely, providing a fresh, durable plumbing line. It is a common solution for aging homes in Longmont with original copper or galvanized plumbing.
Hot Water Slab Leak Repair in Longmont, CO
Hot water lines leak under slabs more often than cold lines because heat expands and contracts the pipe against concrete and gravel. Mineral scale and constant recirculation can wear the pipe wall faster. We repair the leak or reroute the hot line, and we can adjust recirculation pumps to limit wear. Warm floors and higher gas or electric bills are common signs.
Slab Leak Detection in Longmont
We start by shutting off fixtures and watching the meter to confirm a leak. Then we isolate the hot and cold lines to find out which one is leaking. Using acoustic ground microphones, we listen for the sound of escaping water through the concrete. Thermal imaging shows hot water leaks as warm areas on the floor surface.
Emergency Slab Leak Repair in Longmont, CO
A large slab leak can push water up through flooring or into walls quickly. We help you shut off the water and send a technician to isolate the leaking line. Often we can restore water to the rest of the house while we plan the repair. Quick action limits flooring damage and soil saturation.

Spot Repair Through the Slab in Longmont, CO
When the leak is isolated and the rest of the pipe is in good shape, a spot repair through the slab is a sensible option. We cut a small opening, dig down to the pipe and replace the damaged section. The trench is compacted and the concrete is patched. Flooring is then restored by your preferred contractor.
Slab Leak Repair Near Me in Longmont, CO
When you search for 'slab leak repair near me' in Longmont, CO, GFR Plumbing is your local expert. Our well-placed teams allow for quick response times to any slab leak emergency or scheduled repair across the Longmont area. We are always nearby and ready to provide efficient and effective service.
Don't let a hidden slab leak undermine your home. For expert slab leak repair near me, GFR Plumbing offers prompt service and lasting results throughout the Longmont area. Trust our skilled plumbers to handle your foundation plumbing issues with precision and care.
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
Slab leaks are a real concern for homes in Longmont, CO, where shifting soil and foundation movement can put significant stress on underground plumbing pipes. Basements are common in Colorado, and shifting soil can crack floor drains, sewer lines, and basement walls over time.
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 Slab Leak Repair Process Works in Longmont, CO
We make slab leak repair straightforward with accurate detection and clear options.
Request a Quote
Contact GFR Plumbing at (720) 727-9398 to schedule an appointment. Our friendly staff will gather initial information about your concerns.
Leak Detection
Our technicians arrive with advanced equipment to accurately locate the slab leak, using acoustic and thermal imaging tools. This step makes sure we identify the exact source without unnecessary damage.
Repair Options
Once the leak is located, we present you with clear repair options, explaining the pros and cons of direct access, rerouting, or tunneling. We discuss the best approach for your specific situation and property.
Frequently Asked Questions About Slab Leak Repair in Longmont
The cost of slab leak repair in Longmont, CO can vary widely, usually ranging from $1,000 to $5,000 or more, depending on the leak's location, severity, and chosen repair method. Simple direct access repairs might be on the lower end, while extensive rerouting or tunneling will be higher. We provide a clear, upfront estimate after a thorough inspection.
GFR Plumbing stands behind our slab leak repair work with a comprehensive warranty on parts and labor. The specific terms of the warranty will be provided with your estimate, for peace of mind about the durability and quality of our repairs in Longmont.
Simple spot repairs often do not need a permit, but reroutes and repipes may, depending on your city. We take care of permits when required.
Detection typically takes one to three hours. Spot repairs and reroutes usually take one to two days.
Common causes include corrosion from hard water, abrasion where pipes rub against concrete or gravel, poor installation, high water pressure and soil movement. Hot water lines are especially vulnerable.
Homeowner's insurance policies vary, but many cover the cost of damage caused by a sudden and accidental slab leak, although the repair of the pipe itself might not be covered. It is best to check with your insurance provider right away after detecting a leak. We can help provide necessary documentation for your claim.
While not entirely preventable, regular plumbing inspections can help catch potential issues early. Using quality plumbing materials during construction or repiping, and addressing any noticeable water pressure changes promptly, can help reduce the risk of slab leaks in your Longmont home.
Slab leak repair is a complex job that requires specialized tools and expertise. Trying a DIY repair can lead to further damage to your plumbing system or foundation, potentially costing more in the long run. It is always recommended to hire a professional plumber from GFR Plumbing for slab leak detection and repair.
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













