Venting Furnace Through Metal Roof

Installing some type of ventilation mechanism on a metal roof is not a lot different from the addition of vents to any type of roof.

Venting furnace through metal roof.

First you ll partially block your roof vent with the piping reducing the flow of cooling air through your attic. If there is no sub roof to support the metal roof consider installing slatted vents just under the eaves instead of on the roof. Metal roofing works well with this because the metal is unaffected by heat not being able to pass through it and enter the attic. The metal i m using is called crinkle black i purchased all my materials at h.

If your furnace has an afue rating below 90 percent it will most likely have a flue pipe that goes up through your roof. The other option of course is a vented attic which requires an equal balance of intake and exhaust vents. Second during cold winters you ll be blowing warm moist air onto a cold surface the roof vent and roof plywood. Should you vent a metal roof.

Run the vent pipe up through the roof and install a metal or pvc flashing collar over it. In this video i cover installing a roof boot for a vent pipe in a metal roof. That depends on whether you have a standard efficiency or a high efficiency furnace. Match the vent pipe to the furnace maker s recommendations either sheet metal or vinyl.

Should my furnace flue pipe go through the roof or the side of the house. In many cases for existing homes this is the easier way to go.