In this how-to video, This Old House general contractor Tom Silva provides an escape for bathroom moisture. But more importantly, it will help prevent moisture -related problems, such as the growth of mold and mildew. No matter the location of the bathroom , you can vent the exhaust fan through the wall.
Ductwork is what will connect the fan to the outside.
The location of the bathroom will determine how extensive the ductwork will be.
However, bathrooms that are further from an exterior wall will .
Venting this fan into the attic is simply asking for problems.
Bathroom vent fans must be vented to the out of doors. The excessive moisture will cause condensation on the roof members, insulation and eventually cause mold. It is never OK to vent directly into an attic even if the attic itself is vented.
We include bathroom venting code citations and the text also explains why bathroom vent fans are needed and describes good bath vent fan choices, necessary fan capacity . First, the fan should be located in the area of the bathroom that is exposed to the most moisture. A new bathroom exhaust fan will clear the steam and help prevent mold.
Slide the housing to the side and disconnect the vent duct. I have just replaced the bathroom extractor fan and found that the exhaust is vented into the roof space and not the outside environment. Due to the shape of the roof there are no soffits to vent through, so it has to go through the roof.
A discussion of bath exhaust fan duct work options and important details. Make sure your bath fan is vented properly to avoid mol mildew and other issues. Install the roof vent - Install Bath Fan.
Apply roofing cement on the underside of the flanges to seal.
Secure the vent flanges with roofing nails before installing . Surprisingly, bathroom fans are not required by most building codes. And homeowners today may be reluctant to retrofit bathrooms with an appliance that requires venting to snake through attics, joists, soffits, and ultimately . They can even be left on full time if you need continuous ventilation. Most ordinary fan motors would burn out.
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