Insulation Around Bathroom Exhaust Fan

T he result of the insulation problem around a bathroom exhaust fan is either water stains or mold near the vent of your bathroom.

Insulation around bathroom exhaust fan.

Foam did not enter the fan enclosure. What is the best thing to do to correct this problem. Using spray foam to seal around a bathroom vent fan mar 12 2014 john said. The first step is to head to the attic.

Inspect the attic floor around the fan box for air leaks. Right now there is a vapour barrier paper between the insulation in the attic and the drywall. Water stains on the ceiling around your bath fan may indicate a leak coming from the vent cap on your roof but condensation is the more likely culprit. I sprayed insulation foam not the fire block around the bathroom vent fan in an attempt to seal small air leak from the attic.

In existing homes air seal and insulate around new or existing bathroom and kitchen exhaust fans to minimize air leakage to and from unconditioned attics. I have a bathroom exhaust fan that is vented directly into the attic. This article series explains how to install bathroom exhaust fans or vents the vent ducting the vent termination at the wall soffit or roof vent fan wiring bath vent duct insulation bath vent lengths clearances routing and we answer just about any other bathroom ventilation design or installation question you may have. I m adding a bathroom exhaust fan which is being mounted in the ceiling of the bathroom in the attic and venting out through a vent in the wall.

Insulation problems will lead to other problems like the fan not being able to extract any humidity from the bathroom at all. Is this a fire hazard. John you should be ok if the following. It has started to leak water back through the exhaust fan into the bathroom.

If you take it through the roof using a metal pipe do you use insulation around the pipe.