When cutting brackets it s advised that you use either a reciprocating saw or an oscillating saw.
Attic access in bathroom.
The first and most important thing is to determine the fan size as well as the fan duct size.
All you have to do is take off the fan cover and get the exact measurements of the exhaust fan housing.
The warm air will exhaust out the duct and enter back into the attic through the soffit vent or ridge vent.
After you have successfully removed your old bathroom fan you can now install your new one.
How to install a bathroom fan without attic access things to do before replacing a bathroom fan 01.
Letting the fan exhaust into an open attic will cause moisture buildup on the underside of the roof.
Assess the type of attic bathroom you want.
Avoid venting through a soffit vent or ridge vent.
If you have access to the attic the fan can vent either through a gable wall or roof.
For those homeowners who don t have access to the bathroom fan from the attic the brackets or mounting screws will need to be removed from below.
Measure the fan housing and duct.
You want to plot the shortest course and although code allows bends in the duct pipe there should be as few as possible.