Vent Fan Through Roof
I have gotten mixed opinions on whether to vent the new fan through the roof or through the soffit eave.
Vent fan through roof. Of attic space at up to 1550 cfm. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. The vent should go directly outside through the vent hood cover. While both soffit roof vent does the same job of removing the moist air outside there is one.
Connect the ductwork with sheet metal screws wrap the. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Installing bathroom exhaust fan flat roof image of and closet. Each fan comes with a built in humidistat and thermostat.
However natural air flow from the outside will bring the moist air back into the attic through the soffit vents kind of like a vacuum. I have my fan vented out through the roof but near the inside of the roof in my attic the vent leaks a bit and condensation gets on the wood and a bit down in the insulation around where the vent goes out. There should be a flap that prevents any outside air from coming in. Pass the opposite end of the duct through the hole in roof.
And while both a roof vent and an overhang vent perform this task there is one big difference. Next use aviation snips to cut slits into the sheet metal sleeve. How bathroom fans should be vented a plete hvac buzz. Install roof vent for bathroom fan jaxsonhomedesign co.
In the winter this fan reduces the risk of ice damming. Vent bathroom fan through metal roof image of and closet. Bathroom vent soffit vs roof. Bend over the tabs then nail the tabs to the roof.
This is the least expensive high quality fan feature for feature available. You need to vent it through the attic terminating it on the roof or the gable end. I can feel some water around the metal wrapping of the vent where there is an opening. Our stylish powder coated steel 30 watt fan will effectively ventilate up to 2500 sq.
Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. Run a thick bead of tri polymer sealant along the underside of vent hood. Take the end of the duct with the connector fitting and attach it to bath vent fan. I am getting a new roof installed and tear off and likely a lot of plywood and am simultaneously getting a new bath vent fan.
The roof contractor recommends the soffit to minimize protrusio. This article shows the best way to vent a hood and exhaust fan that s above the stove when you have an interior wall with cabinets above.