It can take longer and cost more if it s a first floor installation on a multi level home or if you choose an upscale silent fan which can run 200 by itself.
Best person to install bathroom fan in attic.
Bathroom exhaust fans are not required by most codes.
In some localities the building department may require the use of r 3 to r 8 fiberglass pipe insulation to control condensation and even when it isn t required it s.
You can find 4 in.
The optimal location for a bathroom fan is between the toilet and the shower.
Duct already wrapped in insulation at home centers.
You may just want to go with a completely new vent the whole way most modern bathroom fans require 4 or 6 vent hoses for much better performance and lower noise.
Determine where the ceiling joists are and do not cut into the joists for any reason.
In lieu a window 3 feet square or more capable of being opened at least halfway will suffice.
Iliving 800 cfm shutter exhaust fan at amazon this fan can easily remove excess heat moisture and odor from any space up to 1 200 square feet.
I would recommend installing a bath fan with a new vent that goes to the gable wall roof or even the soffit last choice.
Bathroom exhaust fans perform an important function by removing excess moisture from your home.
Although this isn t always possible in attic crawl spaces you should always insulate the duct to prevent condensation problems.
But while you can t have two fans with one vent you can make one fan and one vent serve two bathrooms.
The best way to proceed with a bathroom fan installation with no attic is to run the venting duct between the ceiling joists and through a nearby exterior wall.
A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan.
The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.
When venting a bathroom exhaust fan make sure to vent the air to the outside rather than into your attic where it can cause mold and mildew to form.
The attic bathroom will need electricity to supply at least two 20 amp gfci outlets and one switch controlled ceiling light.
This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo.
Condensation can be a problem in an uninsulated attic so the homeowners trades resource center recommends installing rigid pipe with a minimum slope of 1 8 inch per foot toward the vent outlet to keep water away from the fan.