Frequently Asked Questions

1. CAN YOU DESCRIBE THE LINER?  

Sure. The Triplex Liner is composed of two outer layers of fiberglass with an impermeable membrane as the middle layer. (We have varying weights of fiberglass to accommodate structural needs.) The liner is designed this way to provide structural integrity, chemical resistance and impermeability from groundwater infiltration. Epoxy resin is applied to the liner just prior to the installation. Curing takes place by steam heat injection. When the installation is complete the liner is completely bonded to the original existing structure.

2. HOW DO YOU ENSURE A CORRECT FIT?

Good question. A member of our field team will thoroughly inspect and accurately measure each structure. Detailed field notes along with liner dimensions are transmitted to the manufacturing facility where the appropriate liner is custom manufactured to precise dimensions.

3. WHY ARE TRIPLEX LINERS CONSIDERED PERMANENT REHABILITATION?

We're glad you asked! You probably already know that the deterioration in sewer structures is caused by hydrogen sulfide gas, (converted to sulfuric acid by a process we won't even bother you with). It literally turns precast concrete into dust and eats away the mortar between bricks. With Triplex Liners, the hydrogen sulfide gas does not affect the liner so you eliminate further deterioration and infiltration. We've been at this for over twenty years. In fact, Ron McNeil, the founder of McNeil Technologies designed this industry transforming process. He's an awesome kind of brilliant and it works.

4. DO YOU OFFER A PRODUCT GUARANTEE?

Yes we do and it's a great one! In fact, we’ve yet to see another manole rehabilitation company match our warranty. Triplex Liners have a 20 year unconditional non-prorated warranty on the liner. We don't expect you to have any issues but if you do, this warranty makes us both feel better. It also attests to how much we know our product will solve your manole, pump station and culvert rehabilitation needs.

5. Does the structure have to be dry to line it?

No. The structure can be wet or dry. Our liner will bond even with active infiltration present.

6. Is Bypass pumping required?

Not typically for manholes. If the sewage flow can be contained within the invert channel we will bridge over it with a plywood platform and allow the flow to continue while we complete the liner installation. For pump or lift stations, the pumps must be removed for lining the complete structure. Pumps are then reinstalled.

7. What about price?

Because our liners are custom made, each structure presents its own unique dimensions and conditions. There may be staging for off road operations, and/or extra labor and materials for missing or malformed benches. Also, it is easier to rehab structures that are in close proximity to each other. All these factors affect and determine pricing to some degree.

8. what is involved in a Pilot Program?

A Pilot Program involves selecting a few structures, (usually 6 -10) to rehabilitate. This allows the municipality to become acquainted with the quality of Triplex Liners.

9. WHAT'S THE BIGGEST STRUCTURE YOU HAVE EVER LINED?

Yuuuuge! We've actually got a few that we think are worthy of awes and gasps. 

  • 50 ft. diameter sewage pump station three stories deep in Baytown, TX

  • 78 inch diameter by 10 stories deep manhole in St. Paul, MN

  • 30 in diameter by 815 ft. long sewage pipe in Tifton, GA

  • 6 ft. diameter by 70 ft. deep manhole in Edmonton, Canada