Build-up of sludge in various locations in the system can wreak havoc with the operation of the booth itself. Sludge build-up on the flood sheets will lead to poor water distribution and open gaps where live paint overspray can make its way into the scrubbing chamber and up the stacks. Booth balance will also be affected potentially impacting paint finish quality. Sludge in the piping will clog off water flow and have a similar effect. Paint sludge getting up the stacks is a huge signal that booth balance is off – with the potential for the sludge to exit the stacks and go out to the parking lot.