What you are specifying, in plain terms
The Triplex Liner is structural fiberglass bonded around a continuous non-porous membrane, cured in place inside the host structure. The membrane is what separates it from a coating: the corrosion barrier is a continuous layer built into the laminate, not a film applied to a wall that is already failing.
Each liner is built in two pieces, the shaft and the bottom disc, with double thickness where the wall meets the bench. That geometry is patented, and it is there because the bench and the corner are where these structures actually fail.
It is fabricated for one structure, it is installed in wet or dry conditions, and it is designed and tested to last up to 100 years in sewer conditions.
The specification package
Issued to the engineer of record on request, with everything needed to specify the system and review a submittal.
Product data
What the liner is made of and how it behaves, at the level a submittal needs.
Section details
Wall, bench, invert, corner and penetration, drawn.
Guide specification language
Editable text you can drop into a section and mark up.
Design basis
The structural basis the liner is designed to, stated for the record.
Warranty terms
The full certificate, including the exclusions.
Installation sequence
What happens on site, in order, so you know what you are inspecting.
Request the package
Tell us who you are and what you are specifying. It goes to you directly.
Questions engineers ask
Can we write this into a specification?
Yes. We issue a specification package to the engineer of record on request, with product data, section details and guide specification language.
How is this different from an epoxy or cementitious coating?
A coating protects a surface. The Triplex Liner is a structural wall with its own corrosion barrier, cured in place inside the existing structure.
How long does it last?
The liner is designed and tested to last up to 100 years in sewer conditions. Standard manholes carry a twenty-year non-prorated materials warranty, and wet wells, pump stations and culverts carry five years.
Can it go in where the structure is still leaking?
Yes. The system is designed to be installed against active groundwater, so the infiltration does not have to be stopped first.
Send us the structure
If you would rather start with a specific structure than a document, send it over and we will tell you whether the liner is the right repair for it.