The Mainstay® Composite Liner is a manhole rehabilitation system consisting of a high strength restoration mortar (typically Mainstay ML-72) and an epoxy corrosion barrier coating (typically Mainstay DS-5) that cure simultaneously to repair and protect brick and concrete manholes, lift stations, wet wells, and other sanitary sewer structures. The mortar is first shot onto a new or deteriorated substrate, and an epoxy topcoat is then immediately applied while the mortar is still soft. The concurrent application of these materials creates a monolithic surface that cures into a strong, highly corrosion resistant, and continuous manhole lining, free of pinholes, holidays, and voids. The mortar and topcoat are tightly bonded not only to the substrate but also to each other.
Product Detail Sheets:
- Mainstay ML-72 Sprayable Microsilica Restoration Mortar (158 KB): applied up to 5"
- Mainstay ML-72 HP Sprayable Microsilica Mortar (150 KB): polymer modified version of ML-72 applied up to 1/2"
- Mainstay DS-5 100% Solids Epoxy Coating (144 KB): applied up to 125 mils (.125")
- Mainstay DS-5-S 100% Solids Epoxy Coating (142 KB): medium-build version of DS-5 applied up to 50 mils (.050")
- Madewell® 1312S 100% Solids Epoxy Coating (144 KB): applied up to 20 mils (.020")
- Mainstay DS-5 FS 100% Solids Epoxy Coating (138 KB): fast set version of DS-5 applied up to 125 mils (.125") and cures in as little as 15 minutes
Ancillary Manhole Rehabilitation Products:
- Mainstay ML-10 Hydraulic Cement Mortar (134 KB): a fast-setting mortar used to repair leaks
- Madewell 806 Flexible Joint & Manhole Chimney Seal (172 KB): a flexible epoxy coating applied to the joint between the chimney and frame of a sewer manhole at a thickness of 1/4" to protect against cracking from freeze/thaw and traffic.
- Madewell 927 Penetrating Epoxy Primer & Sealer (141 KB): for applications in which an epoxy topcoat cannot be immediately applied over restoration mortar
Recommended For:
- Manhole rehabilitation
- Lift station restoration
- Wet well repair
- Wastewater treatment plant headworks
- Clarifiers
- Digesters
- Sumps
- Sewer pipe
- Trenches
- Paper mills
- Chemical processing plants
Advantages of the Mainstay Composite Liner:
There is no wait time for the mortar to cure after it is applied to the manhole because the epoxy topcoat is applied while the mortar is still soft.- This system is specifically designed for use in moisture laden environments. Restoration mortars used in the Mainstay Composite Liner are properly applied when the surface of the concrete or brick manhole remains damp.
- Mainstay ML-72 mortar is a high-build restoration mortar that can be applied to vertical manhole surfaces up to 5" thick, often restoring the manhole substrate to its original thickness.
- Mainstay DS-5 is a 100% solids epoxy coating. It contains no solvent and may be applied to the manhole up to 125 mils in a single coat.
