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Manhole Repair & Rehabilitation: Manhole Lining

Manhole repair and rehabilitation is often overlooked until there is an issue.   However, as connection and access points within municipal, industrial, and commercial sewer systems, manholes are critical to the function of sewer systems and the safety of those who need to access underground sewer systems to keep them running.

Prior to trenchless methods, the only option for repairing broken or deteriorating manholes was a full conventional replacement. However we now have trenchless methods for manhole repair to be able to rehabilitate manholes to like-new conditions using our manhole lining system – all while saving the labor and down-time costs of conventional replacement by skipping the digging.

Manhole Lining Benefits

  • Extends lifespan of existing manholes
  • Skip the digging to save money on labor costs and down-time losses
  • Avoid the cost of repairing area around manhole required by conventional replacement
  • Rehabilitation eliminates infiltration, inflow, and corrosion issues
  • Lifetime warranty backed by our No Clog Guarantee™

How Does It Work?

 

  1. Clear Manhole for Access & Safety
    Manholes may have debris or roots that will need to be removed to get clear access for our crews to start to work on the repair. Because working within a manhole is a confined space hazard; our teams are trained and will set up the necessary safety measures to enter and work inside of the manhole safely.

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  2. Interior of Manhole is Cleaned and Prepped
    Our crews use a water pressure washer to clean the manhole surface to be rehabilitated and then use mortar to fill in any large cracks or voids in the existing concrete surface. Finally, we apply a primer to interior walls and the base to allow for better adhesion between the cleaned substrate and the epoxy coating.

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  3. Lining Material Applied & Cured
    Once the manhole is properly prepped, our crew will apply the two part epoxy manhole lining material to the inside of the manhole to create a new manhole inside the old manhole which forms a barrier between the moisture and corrosive gasses passing through the manhole and the substrate.

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What Are The Benefits Of Manhole Rehabilitation?

  • Extends Lifespan
    Because our lining material creates a barrier between moisture and the substrate of the manhole, the lifespan of the manhole is extended by avoiding daily wear and tear. In addition the epoxy coating structurally reinforces weaknesses and minor issues within the substrate.
  • Solves Inflow, Infiltration, and Corrosion Issues
    Manhole lining creates a barrier between the substrate and the environment which stop corrosion caused by hydrogen sulfide gas (H2S) and microbes. Because lining fills in cracks and breaks in the manhole it stops inflow and infiltration in the system.
  • Reduce Downtime Costs While Also Saving on the Cost Of The Repair
    By skipping the digging you save on both labor costs as well as the additional costs to rehabilitate damage caused by the removal of a manhole that is required during conventional excavation methods. Because the rehabilitation of a manhole can be done quickly, you reduce downtime headaches and associated costs.