Sewage back-up in a bank in Austin MN
The drains backed up during a storm that cut the power off to multiple sump pumps at a bank in Austin MN. Due to the bacteria that was involved, demo was needed on the affected walls to remove the damaged materials. There was a metal track stud system with wet insulation behind the drywall. The water had made it's way into the track system and saturated the insulation behind the wall. In order to prevent secondary damages, it was necessary to cut out all the affected area walls and remove the wet insulation.
This picture shows an example of the wall cavity behind the drywall.