The Mainstay® Composite Liner FR is a modification of the standard Mainstay Composite Liner manhole rehabilitation system that includes a high strength epoxy/fiberglass layer for additional strength. For information regarding physical test data, please contact us.

Product Details Sheets:

  1. Stairstep visual of Mainstay FR system layersMainstay ML-72 Sprayable Microsilica Mortar (189 KB) at 1/2"-5"
  2. Madewell® 927 Penetrating Epoxy Primer (236 KB) at 8 mils (.008") WFT
  3. First coat of Mainstay DS-5 100% Solids Epoxy Coating (171 KB) at 40 mils (.040")
  4. 18 OSY (ounces per square yard) of woven glass fabric saturated with Madewell 1312E Epoxy Saturant (165 KB)
  5. Second coat of Mainstay DS-5 100% Solids Epoxy Coating (171 KB) at 60 mils (.060")

Recommended For:

Brick or concrete structures that have experienced or will experience cracking caused by corrosion damage and/or freeze/thaw conditions, such as:

  • Manholes
  • Lift stations
  • Wet wells
  • Wastewater treatment plant headworks
  • Clarifiers
  • Digesters
  • Sumps
  • Sewer pipe
  • Trenches
  • Paper mills
  • Chemical processing plants

Advantages of The Mainstay Composite Liner FR

  • Increased structural integrity: the application of fiberglass reinforcement often results in a system that is stronger than the original structure.
  • Prevents cracking and structural deterioration
  • Provides a protective barrier against corrosion
  • The use of Mainstay ML-72 mortar allows the system to bond tightly to the host structure.