America's Underground Infrastructure Is Falling Apart
Every city runs on infrastructure nobody sees: manholes, lift stations, wet wells. Sewer gas eats the concrete, and years of corrosion end in leaks and lost strength. Cities have spent decades paying for temporary fixes to a permanent problem.
The Triplex Liner System Is the Permanent Fix
The Triplex Liner is not a coating. It is a new structural wall of fiberglass and a continuous corrosion barrier, cured in place inside the existing structure. The structure gets its strength back and keeps it.
The system has been patented, proven in service, and designed and tested to last up to 100 years in sewer conditions.
It is installed in cities across the United States, Canada and Australia.
How It’s Done
Every liner is measured against the structure it will repair and custom built at our factory. On site, the work moves fast: the structure is prepped, the liner is cured in place, and the structure returns to service. For a typical manhole, installation is completed in a single day.
Engineers can request the full specification package. The disruption a city fears from rehabilitation is the part we engineered out.
Measured and Built
Every liner starts at our factory in Northwest Florida, custom built to the measurements of the structure it will repair, in two pieces: the shaft and the bottom disc.
Prepped and Installed
On site, the structure is cleaned back to sound wall. The crew saturates the liner, lowers it in, presses it into full contact with the structure, and cures it in place with steam and air.
Back in Service
The inlets and outlets are cut and reopened, and the structure returns to service with a new structural wall inside the old one. Installation for a typical manhole is completed the same day.
Do It Right Once
Temporary fixes like spray-ons and coatings protect a surface for a short time. Real rehabilitation requires the Triplex Liner: the structure gets its strength and its corrosion protection back in one operation.
That is why cities that have tried both specify the liner. It turns a maintenance cycle into a finished repair.
Built for the Toughest Jobs
Deep, in freezing temperatures, in the middle of Edmonton, Alberta. Some structures are critical to a city's health and nearly impossible to take offline: deep, downtown, on streets that cannot close. That is the work this system was built for. The liner goes in through the opening that is already there, one piece, built for that structure, and the street is back the same day.
Working in Maryland
We work with Maryland municipalities, utility districts and consulting engineers on manhole, lift station and wet well rehabilitation. If rehabilitation is in your capital plan, we can help scope and specify it.
Triplex Liners in Maryland
There are Triplex Liners in the ground in Maryland, since 1992. Every one of them was made at our plant in Northwest Florida, built to the measurements of the structure it was going into, and cured in place inside it.
Cities in Maryland With Triplex Liners in the Ground
Tom'S River, St. Thomas, Bayside Prison, Dundaulk, Hagerstown, Meridith Farms, Elizabeth Town, Ephrata, Poolsville, Toney Town and Weathervane Farms.
Where We Take Projects in Maryland
We take projects across the state. Baltimore, Columbia, Germantown, Silver Spring, Frederick, Waldorf, Glen Burnie, Gaithersburg, Rockville and Ellicott City, and the districts and authorities between them.
What Maryland Asks After an Overflow
Maryland requires the owner or operator of any sanitary or combined sewer system to telephone the state and the local health department within twenty four hours of an overflow, and the report has to identify the component it came from. The rule lists the manhole as one of those components by name.
Reporting is the symptom; the structure is the cause. Where an overflow traces back to a manhole or a lift station that has lost its wall, rebuilding that wall ends it. Where the cause is capacity or a blockage, lining is not the answer and we will say so.
Three Ways In
What the liner costs a city over its life, and what the warranty covers.
Go →Writing a spec?EngineersRequest the specification package: product data, section details and specification language.
Go →Install for a living?ContractorsThe Triplex system is licensed to trained contractors, and we are signing across the country.
Go →Questions We Get in Maryland
How long is the structure down?
A typical manhole is lined in four to six hours and returned to service the same day. Larger structures take longer.
We have used coatings before. What changes?
A coating depends on the wall underneath it. The Triplex Liner is a new structural wall, cured in place inside the old one, with the corrosion barrier built into it.
Is this only for manholes?
No. Manholes are the core application, and the same system lines lift stations, wet wells, pump stations and culverts.
What is the service life?
Up to 100 years in sewer conditions, designed and tested. The warranty is twenty years on manholes and ten years on lift stations and wet wells.
Can it go in where the structure is still leaking?
In many cases, yes. A standard installation handles active leaks roughly ten to fifteen feet down, and about twenty feet of head pressure is the practical limit of the traditional method. Severe infiltration, or a structure that has begun to collapse, calls for other measures first. The real limit depends on ground conditions, the water table and the depth of the structure.