I’m planning on using Icynene in our new home but continue to be nervous about possible future problems with carpenter ant infestation, even though the Icynene folks and installer have told me they’ve not heard of problems with ants. But to play it safe, I decided to spray as much of the framing as I can get to with Boracare before insulating, figuring that it will help retard mold growth on the wood as well. However, on the walls where I’ve already sprayed, a slightly powdery residue is left after the solution dries, and I’ve now traded the concern over insects with the concern about whether or not this residue will keep the Icynene from sticking properly.
Since the airsealing quality of Icynene is its most valuable feature, I certainly don’t want to compromise this just to deter insects that may not even show up. Would greatly appreciate getting some feedback on this before I apply any more Boracare!