Dick_B wrote:
Some of the fixit shows sprayed cellulose into the cavities. Drill two holes; one near the top and one near the bottom. Inject the cellulose into the bottom and stop when it comes out the top hole.
The problem is the dry blown in cellulose settles over time in a stationary structure like a house, imagine what is going to happen when your bouncing down the road. Wet blown cellulose typically doesn't settle but that installed usually with open walls but that would settle too in this situation I would think.
Another thought is to use the foam in a can that is meant for doors and windows, DO NOT use the type for big gaps etc., that will push things around in a bad way. That is a thought and maybe not a good one at that, could be real messy and take a lot of cans not to mention if you ever have to fish anything in the walls it become a PITA.
Dan
