Was up in an attic today and couldnt help but notice that the air handler and every inch of duct work had been sealed with expanding foam. Has anyone else come accross this? It looked like a complete waste of money, and talk about a pain to work around. I was trying to add a 2nd switch leg to several switch boxes and had to tell the H.O. that it was impossible unless I could start tearing his foam apart which he said NO WAY. What on earth could covering the ducts and air handler in expanding foam accomplish? If it was to prevent leakage of conditioned air I think new ducts would have been alot cheaper than the $4000 the H.O. said he paid. Does anyone know if this foam is safe for NM cable as several lines of NM cable were sealed with the duct. I wish I had taken a pic and could post it here. If I go back next week I will, it was quite a site.
