And while both a roof vent and an overhang vent perform this task there is one big difference.
Bathroom vent through wall or roof.
It is because of this that many builders tend to advise against this method.
Bathroom exhaust venting does not have to exit up through the roof and in fact that s not necessarily even the best termination.
A single exhaust exits through the roof figure a.
Leave the drill bit sticking through the roof so you can find the hole.
In the 1998 built house i just bought the bathroom fans vent to a gable wall in the attic.
An exhaust vent fan can exhaust out through a gable end side wall or out through a soffit overhang.
The metal visible below the exhaust duct was put in place to reinforce the supporting web between the i trusses.
I am having a new roof installed and am wondering whether i should connect to the current gable vents or have roof vents installed.
This involves running ductwork from the fan usually though an attic and out through the roof.
Try to keep it close to the fan location.
A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan.
From up on the roof use a jigsaw or reciprocating saw to cut a 4 in.
Start in the attic and drill a hole through the roof in the desired vent location.
Having warm moisture laden air from a bath exhaust fan exiting out the soffit will drive moisture into the attic causing all sorts of issues with mould mildew and rot.
This system is quiet too.
Approximately 10 and 16 foot runs respectively.
The bath exhaust vent duct is routed through the ceiling between i trusses used to support the roof over the wall top to the building exterior into the soffit cavity.
As for the walls rainscreen compatible intake and exhaust vents are now available.
Whether it s new construction or a remodel a bathroom vent should always vent through the roof instead of an eave overhang or soffit.
However they re not currently connected.
And of course a bathroom with a window doesn t require an exhaust vent.
The point of a bathroom exhaust vent or any vent really is to remove hot moist air from the house.
A wall exhaust depending on how close to the soffit it s located won t drive up into the attic.
Choice is go up to roof 5 6 feet or out the present vent 15 18 feet with insulated pipe or shorten the line by going straight to side of home but this requires going up high with latter to drill a new vent hole as tight quarters in attic prevent drilling from attic.
The soffit vents are convective intakes for venting the attic.
Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof.
You mount a switch in each bathroom.
In order to accomplish this the roof has to have a hole cut in it.
