Home>Discussions>INSULATION & HVAC>Can a PVC furnace exhaust pipe be insulated?
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Chronos
Can a PVC furnace exhaust pipe be insulated?

I live in northern Michigan, where ice dams are a problem.

I installed soffit vents and added a gable vent to keep the attic cold during winter. Part of the roof also has a ridge vent. (The roof has three gables and a section of shed roof.) My attic is pretty well insulated, and I'm ready to add more this fall. I also plan to add foam baffles to the roof near the eaves.

I upgraded to a high-efficiency furnace two years ago, and the PVC exhaust pipe goes right up through the roof. Is there a safe way to insulate that PVC pipe to help keep heat out of the attic? I've heard different opinions on this.

ordjen
Re: Can a PVC furnace exhaust pipe be insulated?

How much heat can a PVC exhaust lose to an attic? It is in a plastic pipe because it is not not!

dj1
Re: Can a PVC furnace exhaust pipe be insulated?

Around here, I have never seen an insulated PVC furnace vent.

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