Do you have documentation of cellulose settlement problems during transport? The settled density of cellulose is 1.5 - 2.0 pcf. If it is blown into closed cavities at 3.0 - 3.5 pcf (which would be easier to monitor in a factory setting than on site), then it cannot possibly settle unless there was physical degradation of the fiber. --- On Thu, 12/11/08, Tom "Doc" Brudzinski <[log in to unmask]> wrote: I do work with a modular manufacturer and have contacts with others. They have all stayed away from cellulose because of settlement during transportation. Does your group feel the dense-pack eliminates the risk of settlement by eliminating the space for settlement to occur??