I was not happy with the ducting setup, which had an excessive amount of foil ducting with deteriorating duct tape as a sealer with loose connections. So I'm aiming for an all-rigid solution with proper appliance tape and a magvent mv-90, but am a total novice at all of this.
There is a sewage or drain pipe that runs right above where the ducting needs to go. There is very little clearance available between the floor and the pipe. If the ducting comes in contact with the pipe, and/or rests on the floor (laminate I think), is there a worry about a possible fire hazard that I should be concerned with? FWIW, it was like this for 20 years basically.