They over-sprayed the walls a little, and then shave off the excess with a long saw blade. This results in some large piles/large garbage sacks. Lance (the installer) said that they used to grind it up for use in blown in applications, but it wasn't worth the labor. Today (October 7th) he sprayed the roof decking and clerestory. In large open areas they stretched plastic across, and then sprayed the plastic.