Insulating Bathroom Vent In Attic

Bathroom fan vent code requirements include no venting to attic areas to help reduce mold or structural problems.

Insulating bathroom vent in attic.

The first step is to head to the attic. A very common problem. T he result of the insulation problem around a bathroom exhaust fan is either water stains or mold near the vent of your bathroom. It s not vented out by any means.

A common occurrence during the colder winter months many residents may find pooled water on their bathroom floor or discoloration on their ceiling and can t figure out where it s coming from. I was listening to one of your shows earlier and you were talking about how the bathroom vents are vented into the attic. I mean it s right into my insulation. When venting a bathroom exhaust fan make sure to vent the air to the outside rather than into your attic where it can cause mold and mildew to form.

Bathroom ventilation codes require a bathroom exhaust fan to vent to the exterior not the attic for health and structural reasons. The answer it s probably caused by improperly insulated vent ducts running from your bathroom exhaust fan through your attic space. 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. If bath fan ducting isn t properly insulated the moist air from your house will condense inside the duct.

And i have that problem regarding that. For the same reason insulation shouldn t touch the roof s underside. 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. Insulation problems will lead to other problems like the fan not being able to extract any humidity from the bathroom at all.

Bathroom vent fan ductwork insulation insulate the bathroom exhaust vent fan ducts.