Trenchless technology is not limited to sewer laterals. CIPP lining, epoxy brush coating, and directional installation work on underground HVAC ducts, pool and spa plumbing, conduit systems, and other infrastructure that nobody wants to excavate to reach.
A lot of homes built in Wisconsin from the 1950s through the 1970s have forced-air HVAC systems with ductwork buried in the concrete slab or run underground beneath the basement floor. Over decades, these ducts corrode from the inside out, develop joint separations, and begin drawing groundwater, soil, and outside air into your heating and cooling system instead of conditioned air.
When this happens, your system loses efficiency, your air quality degrades, and in severe cases moisture intrusion causes mold in the duct interior. The traditional fix is to break up the slab, remove the old ductwork, and pour new concrete. That is a significant construction project.
We line the interior of your underground HVAC ducts the same way we line sewer pipes. We access the duct system from existing register openings or small access points, clean the interior, and insert a resin-saturated liner that is cured in place. The result is a sealed, corrosion-resistant duct interior that eliminates infiltration and restores airflow, without breaking up your floor.
We use specialized liner materials rated for HVAC applications, not sewer liners. The liner is engineered for air handling, not wastewater. It creates an impermeable barrier that stops groundwater intrusion and seals joint separations throughout the duct run.
Before we recommend duct lining, we camera-inspect the duct system. Some ducts have localized issues that can be addressed at the joint rather than lined throughout. Some are too far deteriorated for lining to be effective and need to be replaced. We tell you which situation you are in based on what the camera shows.
Spinning brush applicators are attached to a rotating cable and loaded with epoxy resin. The brushes travel through the pipe, spreading the resin evenly across the interior walls and pushing it into cracks, pinholes, and joint gaps as they go.
The epoxy cures and creates a hard, sealed interior surface. It does not add significant wall thickness so flow capacity is preserved. It seals leaks without replacing the pipe.
Swimming pool plumbing runs beneath the pool deck and through the surrounding soil. When these lines develop leaks at fittings, joints, or from minor cracks, the traditional fix is to break open the deck to access the pipe. That damages the deck, the surrounding landscape, and creates a significant restoration project.
For leaking pool and spa plumbing in pipes typically from 1 inch to 3 inches in diameter, epoxy brush coating seals the leaks from inside without excavation. We locate the leak, clean the interior of the pipe, inject an epoxy resin, and run spinning brush applicators through the line to coat the interior walls evenly and force the resin into the leak points.
When the epoxy cures, the leak is sealed and the pipe interior is protected against future corrosion. The deck never gets touched. The landscaping stays intact. Most pool plumbing coating jobs are completed in a single day.
Suction and return line leaks at or near fittings, cracks in PVC or other plastic plumbing from ground movement or freeze-thaw cycles, and general corrosion-related weeping in older pool plumbing systems. If the leak is within the accessible run and the pipe diameter is within range, brush coating is typically the right approach.
Trenchless rehabilitation technology is not limited to a short list of standard applications. Call us and describe the problem. If there is a trenchless approach, we will find it.
CIPP lining for failed electrical or communications conduit buried beneath buildings, slabs, or roads. When pulling new wire through is not possible because the conduit has collapsed or deformed, lining can restore it without excavation.
Process piping, drainage systems, and utility lines in commercial or industrial settings where downtime is expensive and excavation is not practical. Camera inspection and lining through existing access points.
Decorative water features and outdoor fountains with buried plumbing that has developed leaks. Same epoxy brush coating approach used for pool plumbing. No digging through landscaping.
Main supply lines for irrigation systems buried beneath lawns, gardens, and landscaping. Spot repairs, lining, or directional rodding for new runs, without tearing up what is planted above.
Epoxy coating for interior pipe rehabilitation on small-diameter potable water lines. Seals pinhole leaks and corrosion in copper or galvanized supply pipes without replacing the pipe.
Call Melvin at (715) 658-6070 and describe it. Over 30 years in Wisconsin, we have encountered unusual situations that did not fit standard approaches. We figure out what works.
We camera-inspect the duct system first. That tells us the condition of the interior, where the failures are, and whether the structural integrity is sufficient to support a liner. If lining is not viable, we tell you that and explain why.
Yes. Specialty HVAC duct liners use materials formulated specifically for air-handling applications, not standard sewer lining resins. They are tested for air quality and do not off-gas into the airstream once cured.
Yes, within limits. Brush applicators are designed to navigate multiple 90-degree elbows. The accessible run, number of bends, and proximity of elbows to each other all affect what is reachable. Call us with the specifics and we can tell you whether your situation is a candidate.
Typically 1 inch to 3 inches for pool and spa plumbing applications. Larger diameter applications use different methods. If you are not sure, call us at (715) 658-6070 and describe the system.
Melvin has been doing this for over 30 years in Wisconsin. If there is a trenchless way to fix it, he knows it. Call (715) 658-6070 and tell him what you are dealing with.