Re:Smart thermostats inadvertently strain electric power grids
by tguvot on Thursday July 14, 2022 @05:06PM
(#32101462)
I know.
But injectable foam insulation usually going into empty walls. I already have butted fiberglass in there. I don't think it's viable to make laparoscopic wall surgery to remove fiberglass . I did a quick google, and looks like you can do injectable foam over fiberglass. But I am not sure how much R it will add, but I am sure that for cost of of injectable foam + wall repair, I can get another hvac and run it for next 10 years...
I did consider recently to double walls on sunny side of the house with few layers of foil backed foam boards.
Actually, it's possible to inject foam insulation into walls without ripping them off. It goes in through small holes, or through utility boxes. Plenty of companies do that. I've even seen it advertised on TV in California.