FLTDI t1_iufjuu6 wrote on October 30, 2022 at 11:01 PM

I'd use spray foam. Either temp range, is fine for exhaust air.

It'll help, but that vent isn't insulated at all, thin sheet metal has essentially no R value. I wonder if you can find a better version?

RatArmy OP t1_iufm0x2 wrote on October 30, 2022 at 11:16 PM

You mean changing out the vent itself? I suppose I could look into that. I'll have to see how it's secured in.

I'll look into it.

Timbucktoooooo t1_iug4tte wrote on October 31, 2022 at 1:41 AM

Don’t waste your time looking for an “insulated” vent. There’s no such thing. Just insulate around it inside the wall and make sure there’s a door on the outside part of it that keeps the air and critters from coming in but opens when the fan is blowing out.