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Importance of Manholes

Manholes are an important part of a wastewater collection system. They allow access to the sewer line, they join together sewers, align and/ or change the flow direction, as well as provide ventilation so gases & odors can be released from the sewer lines. They provide access in order to clean, inspect, maintain and rehabilitate sewer lines but unfortunately, if manholes are not properly maintained, they will contribute to an excessive amount of I & I (inflow and infiltration) which leads to the deterioration of that same wastewater collection system. 

There are a wide range of ways to rehabilitate or seal manholes in order to eliminate these leaks. There are 3 main types of rehabilitation options:  cementitious mortar linings, polymer linings and cured-in-place manhole (CIPM).

Cementitious Mortar Lining

These linings can be installed quickly, and though they require stopping infiltration and cleaning the manhole, they do not require the structure to be completely dry.

Reliner MSP Cement

Click here for the product data sheet.

Strong Seal MS-2A

Click here for the product data sheet.

Mainstay ML-72

Click here for the product data sheet.

Parson MH Liner

Click below for product information.

GeoKrete Geopolymer

Click here for the product data sheet.

Permacast MS-10,000

Click below for the product data sheet.

Polymer Lining

Spray- or hand-applied polymer linings include epoxies, polyurethanes or polyureas.

Sauereisen SewerGard 210T Epoxy

Click here for the product data sheet.

Standard Cement 4553 Epoxy

Click here for the product data sheet.

SpectraShield Barrier Coat

Click here for the product data sheet.

Sherwin Williams DURA-PLATE 235

Click here for the product data sheet.

Raven 405 Epoxy

Click here for the product data sheet.

OBIC 5000

See OBIC website for more information.

SprayWall Polyurethane Lining System

Click here for the product data sheet.

Nukote Coating Systems

Check out their brochure below.

Cured-in-Place Manhole (CIPM) Lining

CIPM lining is a solid liner that is made up of a felt tube saturated with resin to form a solid liner. This method works well with any size and shape manhole and is water resistant.

TriPlex CIPM Liner

Click here for the product specification sheet.

ALT CIPM Lining System

Click here for the product specification sheet.

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