Stopping air infiltration is the best defense against energy leaks. The Department of Energy estimates that up to 40% of energy loss in a home can be contributed to air infiltration/exfiltration. That’s a lot of money you’re losing month after month. Creating an air barrier is easy yet vitally important in rim joists and attics because without [...]
Read the rest of Existing homes can and should be foamed
The real, honest way is NOT what you want to hear. To stop air leaks, you must see what you’re doing, see where you’re spraying, because you have to fill in air gaps. You have to spray the foam against the outside wall to seal out all the tiny holes that every building has between irregular lumber [...]
Read the rest of Retrofitting Existing Walls with Foam
You wouldn’t normally do something that would cost you money and time. Likewise you should not shoot any polyurethane foam inside existing walls. Foam expands 5-6 times after it is sprayed, and could easily blow out your walls. 1.) Spraying blindly keeps you from sealing up all the areas you want. You cannot save money [...]
Read the rest of Don’t blow out your walls
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