I am installing two Panasonic bath exhaust fans - one FV-08VQ3 and one FV-11VQ3.
Because of the difference in size and location of the new fan, I have to extend the existing 4" sheet metal conduit to the new fan. They are about
30" apart. Should I use new sheet metal conduit to bridge this 30" or should I use a "coiled" looking flex conduit? or PVC pipes?I need to cut the existing sheet metal pipe back a bit, what is the best way to do this? The attic space is tight I am pretty much limited to hand tools.
Also, I traced the conduit and found that all the bath exhaust conduit do not exit the roof, but simply extended to the roof overhang and sat on top of soffit openings. Is that ok? When the fan is on and moist air is drawn, part of it will exit the soffit vent, but part of it will go inside the attic. Is this acceptable?
Thanks,
MC