Following the sloping roof ceiling and exiting into the soffit this fan vent duct slopes down away from the vent fan which you can just see in the photo upper right corner. This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space.
In order to accomplish this the roof has to have a hole cut in it.
Bathroom vent duct. Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. This involves running ductwork from the fan usually though an attic and out through the roof. In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover.
More often bathroom fans vent out through a duct running up to the roof. Get it as soon as tue sep 8. Our bath vent fan duct installation photo shows use of solid metal 4 ductwork conducting the fan exhaust to an outdoor soffit under a cathedral ceiling roof.
The bathroom exhaust ventilation fan disperses air through an opening in the fan housing which is usually 3 inches in diameter and ideally faces in the direction of the ventilation system outlet. It is because of this that many builders tend to advise against this method. Bad odors are annoying but are hardly life threatening and they do not impact the integrity of the building structure at all.
1 16 of over 2 000 results for bathroom vent duct vivosun 4 inch 25 feet non insulated flex air aluminum ducting for hvac ventilation w two 4 inch stainless steel clamps. If you have access to the attic the fan can vent either through a gable wall or roof. Although most bathroom vent fans are quite simple some have bells and whistles such as motion sensors that switch the.
Free shipping on your first order shipped by amazon. Letting the fan exhaust into an open attic will cause moisture buildup on the underside of the roof. If you don t have a duct leading to a sidewall vent call a professional for help.
A 3 or 4 inch duct connects to the outlet on the fan housing and runs to a side wall or to the roof and connects to a vent cap that allows the exhaust to disperse outdoors. Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out. Bath exhaust fans are about keeping your house in top shape by moving water out of your bathroom.
4 6 out of 5 stars 470. Likewise the code requires a minimum of 4 flex or smooth duct for exhausting up to 50 cfm and a minimum of 4 metal smooth or 5 flex duct for exhausting 80 cfm and 4 smooth nor 5 flex is not allowed for 100 cfm. Avoid venting through a soffit vent or ridge vent.
Bathroom venting fans are about more than just eliminating noxious odors. Simple to install in either the ceiling or wall with the patented snap in mounting this fan is best utilized in half baths or other rooms where humidity is not a concern. This is an ideal easy to install solution for rooms where ventilation is needed but ducting is not available.