A failing manhole doesn’t mean roadway shutdowns or costly excavation of the existing manhole and city main. In many cases, we can rehabilitate the manhole from the inside using a waterproofing mortar called PermaCast or Cor+Roc epoxy mortar. This allows our manhole rehabilitation experts to carefully and methodically seal the manhole completely using a spin caster. The only tools we need on the job are our trucks and trailers. No large-scale excavators or demolition equipment.
Restoring the manhole:
This installation process uses high pressure and gyroscopic momentum to apply the mortar evenly throughout the entire manhole and the manhole floor and pipe pathways. This ensures a completely rehabilitated and most importantly a sealed system to last decades.
As you can see from the first photo, the original manhole is made from brick, and over time the joints begin to open up as the mortar erodes and the ground shifts. This eventually leads to exfiltration and infiltration of excess stormwater and wastewater
Some of the following photos show a completely sealed and rehabilitated system. Observe the white-colored manhole coating on the interior of the manhole. This is the newly-applied waterproofing mortar.