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Steps to vent exhaust fan through roof.
Next make sure it is securely fastened on both ends of the pipe.
Next use aviation snips to cut slits into the sheet metal sleeve.
The point of a bathroom exhaust vent or any vent really is to remove hot moist air from the house.
I see many questions about leaking bath exhaust vents.
Next make sure you have one of the new roof exhaust vents on the roof and properly sealed.
And of course a bathroom with a window doesn t require an exhaust vent.
Vent your bath and kitchen exhaust fans through the roof through a special roof hood.
But you can install one fan in your attic for both bathrooms and make your bathroom quieter too.
Pass the opposite end of the duct through the hole in roof.
Venting two bathroom exhaust fans through one roof duct won t work sorry to say.
And while both a roof vent and an overhang vent perform this task there is one big difference.
Therefore i should take a more direct route to vent the fan right out through the roof.
Step 1 first we must set a mark of the vent hole.
An exhaust vent fan can exhaust out through a gable end side wall or out through a soffit overhang.
The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.
Bend over the tabs then nail the tabs to the roof.
I recommend replacing the vent pipe with insulated vent pipe.
However your roofer is correct that bathroom exhaust venting is desirable to avoid indoor moisture problems that can extend to the attic roof sheathing and can affect roof.
Most bath vents for homes are 3.
Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot.
Run a thick bead of tri polymer sealant along the underside of vent hood.
As the warm moist air leaves the bathroom through a soffit it leaves in a downward motion.
You need to take a nail and you are going to drive it right through the roof sheathing through the roof shingles and it will stick up.
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By the diy experts of the family handyman magazine.
The best way is to mark with nails in the middle of the rafter bay.