Insulating Bathroom Vent In Attic

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

Insulating bathroom vent in attic.

For the same reason insulation shouldn t touch the roof s underside. The answer it s probably caused by improperly insulated vent ducts running from your bathroom exhaust fan through your attic space. I was listening to one of your shows earlier and you were talking about how the bathroom vents are vented into the attic. And i have that problem regarding that.

Insulation problems will lead to other problems like the fan not being able to extract any humidity from the bathroom at all. Bathroom ventilation codes require a bathroom exhaust fan to vent to the exterior not the attic for health and structural reasons. I mean it s right into my insulation. Bathroom vent fan ductwork insulation insulate the bathroom exhaust vent fan ducts.

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. The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow. If bath fan ducting isn t properly insulated the moist air from your house will condense inside the duct. Bathroom exhaust fans perform an important function by removing excess moisture from your home.

Bathroom fan vent code requirements include no venting to attic areas to help reduce mold or structural problems. Covering up the soffit vents with loose fill or batts which can happen if you stuff insulation along the eaves is a huge no no. The first step is to head to the attic. 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.

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.