1 determine which side of the building to route the vent duct from the exhaust fan.
How to install a bathroom exhaust fan on first floor.
If you fail to pull the moisture generated in the bathroom out of there it will migrate into the walls and grow mold and mildew or blister paint and peel wallpaper.
Small bath fans provide adequate bathroom ventilation for 79 sq ft.
Let s break down the process to assure you about that.
For bathroom over 100 sq ft use a large or exhaust fan to circulate the air.
My bathroom is on the first floor with a finished bedroom directly above and an unfinished basement directly below.
It would appear to be easier to install a wall or floor fan and direct exhaust down and then out through basement wall just above ground.
A bathroom without a ventilation fan is like a fireplace without a chimney.
I have read that moist air naturally rises so it is easier to vent up.
Lower the fan into place and secure it with drywall screws then use flexible duct pipes to vent the fan to the outside.
The first step in figuring out how to install a bathroom fan is cutting a hole based on the size of the fan you need.
And under while medium bath fans work well for bathooms 70 to 100 sq ft.
The process of using a bathroom exhaust fan on first floor may seem a bit troubling to some people.
Understanding the difference with installing on first floor.
To install a bathroom fan go into your attic and clear away the insulation where the fan will go then return to the bathroom and use a jigsaw to cut out the hole for the fan.