04-20-2010, 08:51 PM
I ran into one of those (N-Scale Gap-Filler Foam) cans sometime ago, but didn't see any need to buy it since I do HO.... 
Seriously...I used some of that foam to seal around AC penetrations on the outside walls of the house and it started to expand and harden almost instantly, and was fully cured a couple of hours later. Guess it's wait-and-see.....
Seriously...I used some of that foam to seal around AC penetrations on the outside walls of the house and it started to expand and harden almost instantly, and was fully cured a couple of hours later. Guess it's wait-and-see.....
Gus (LC&P).