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.
Best person to install bathroom famn in attic.
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.
The optimal location for a bathroom fan is between the toilet and the shower.
Install bathroom electrical circuits.
Those individuals who are installing a bathroom exhaust fan without attic access will want to first measure the hole in.
Options for venting a bathroom exhaust fan include best to worst.
Bathroom exhaust fans are not required by most codes.
Bathroom exhaust fans perform an important function by removing excess moisture from your home.
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.
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.
In lieu a window 3 feet square or more capable of being opened at least halfway will suffice.
It s best to read the specifications listed in the instructions before you start.
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.
Installing a bathroom fan without attic access.
The attic bathroom will need electricity to supply at least two 20 amp gfci outlets and one switch controlled ceiling light.