If you feel like your house is leaking money via a drafty or unsealed attic, conduct an energy audit and/or use a thermal camera ... The difference is that closed-cell foam cells are filled ...

It is recommended that a heating/cooling vent be installed in the foamed attic to condition the space. Expanding foam should also be used to completely seal crawl-space foundation walls ...

Matthew wants to know if the foam board is good. Closed-cell foam is a fantastic product, and I used it to insulate the floor of my outdoor shed. I installed this foam in such a way that it’s ...