Absolutely. I’ve lived in the GWN so I know all too well about excess humidity in a house with a tight envelope. The house we built in Wisconsin had an air to air heat exchanger for just that reason. I would still do it on the ceiling/attic surface no matter what, as that’s an area where you’re sure to lose a lot of energy no matter what.
-D > On Feb 26, 2020, at 3:58 PM, Randy Bennell via Mercedes > <mercedes@okiebenz.com> wrote: > > On 26/02/2020 2:47 PM, Dan Penoff via Mercedes wrote: >> When I was researching energy saving enhancements to my house a few years >> ago this came up. Spraying insulating foam on the back (underside) of the >> roof. Only problem is that it’s difficult to do it once the house is built >> out. I did the numbers and the payback wasn’t worth it. >> >> I’ve discussed this before, but I’ll do it again for the benefit of the >> conversation: >> >> Go through your house and seal every last penetration of the living area. >> This means taking all of the covers off of electrical boxes, light fixtures, >> you name it, if they’re on an exterior wall or attic facing ceiling. Get >> some tubes of caulk and go at it. Seal around where the box meets the >> drywall and any holes or penetrations in the box, like where the wires come >> into it. >> >> To give you an idea of the gaps that can potentially exist, I did this on >> the house we just moved into while I was painting. In a 2400+ square foot >> house I went through four tubes of latex caulk. Think about the surface area >> that covers if it was laid out 1/4” thick. >> >> That’s a pretty big area, I’m guessing a good three square feet, probably >> more. Think about how much air could go through an opening that size, going >> in or out. >> >> This is the second house I’ve done this to. In the last one it made a >> noticeable difference in energy consumption, easily knocking 10%-15% off of >> the electric bill, which is both our cooling and heat. I don’t have a point >> of reference for the new house, but I’m sure it will make a difference. >> >> -D >> >> > I think that may work better in your climate than mine. You can make a house > too tight and create other problems. > > RB > > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
