Bathroom Fan Attic Insulation Blow

A typical bath fan is rated to move 50 cubic feet per minute of air when it s operating but most actually move about half of their rated air flow.

Bathroom fan attic insulation blow. Get tips on installing sufficient attic ventilation to vent the air that gets pulled up there. The duct runs in my attic above the bathroom ceiling two story home. Mar 8th 2018 2 12 pm. Jim asks is it ok to have a bath exhaust fan vent into my attic no it s never a good idea to have any exhaust fan in your home dump all that hot moist air in your attic.

This is non usable space and it is well ventilated with ridge and soffit ventilation so it does get cold in the winter. Or you rent a blower. T he result of the insulation problem around a bathroom exhaust fan is either water stains or mold near the vent of your bathroom. Insulate the bathroom exhaust vent fan ducts.

I ve spent a lot of time in attics looking at problems with insulation air sealing hvac systems and ductwork. Then feed 1 2 a bag of fill into the machine and turn on the hose to start blowing the insulation. Keep calm if that happens to you. I ve also seen why so many bathroom ventilation fans don t move much air.

Insulation problems will lead to other problems like the fan not being able to extract any humidity from the bathroom at all. You should never exhaust the bathroom fan directly into the attic. In un conditioned space such as an attic where otherwise your fan duct will be exposed to cold attic air in winter use insulated solid metal ducting or insulated flex duct. No you cannot vent your bathroom exhaust fan into the attic.

Bath fans should always exhaust outside through the roof via insulated duct and terminate on a dampered roof cap. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. I recently installed a bathroom exhaust fan. Connect the hose to the blown in insulation machine.

Click here to learn more about attic mold. I think you need to go into attic regardless as the fan housing probavly has brackets attached to the attic joists. Connect the hose to the insulation machine. I used flexible 4 aluminum duct to the exhaust damper on the roof.

Mold is commonly found in attics with bath fans that exhaust moist air into the attic. Mold can spread rapidly in an attic. Find out whether you have to worry about an attic fan blowing your insulation around.