I’m curious too. I tried to find someone in my area who did wet spray cellulose for walls (between the studs) and no one really did that in my area. We work with several contractors that do monokote fireproofing and that is similar.

Future access. Blown in gets ruined if I have to crawl around, bats can have the top r30 layer moved and replaced to access whatever repair is needed. Slow progress. Blown requires doing all the removal and air sealing in advance. During all the in progress time it is completely uninsulated. If any...