How To Vent An Extractor Fan Through The Roof

The master bathroom and the 2nd bathroom vent through the roof and through the same opening.

How to vent an extractor fan through the roof.

Most homeowners don t prefer venting through the roof. In order to accomplish this the roof has to have a hole cut in it. That s because it involves a lot of work running a sheet metal ductwork or pvc pipe from the bathroom ceiling through the attic and out through the roof. My home is like betty s.

This is the reason why they look for simpler options. Will any fan be. I need to install an extractor fan in our shower cubicle but as its on the top floor it will need to go up through the ceiling and then through the loft space and out the slate roof. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof.

The 2nd bathroom vent drips on the floor and is ruining the ceiling. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. However it has been proven to be the best way to vent a bathroom fan. But while you can t have two fans with one vent you can make one fan and one vent serve two bathrooms.

A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan. This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo. The fan kits only seem to have stuff for a vent going out an exterior wal and not a roof. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot.

The 2 pipes one a 4 master and the other a 3 2nd do not go through the ceiling but into a common box that goes through the roof. What additional things will i need e g.