We have a two-story brick building with two-course brick exterior. The cross section of the wall from outside to inside would be as follows:
Two courses of brick, portland cement mortar
2" of air space
1" solid wood cladding
True 2 x 6 wood framed wall
Lathing + plaster
Before adding drywall on top of the existing plaster inside, I want to consider blowing in cellulose into the 2 x 6 cavity. The wood cladding should keep it from entering the air space between the brick and the cladding. Would this wall benefit or would it cause vapor problems? I know cellulose is water friendly, and such. There is currently no vapor barrier and the cellulose would insulate well. I'm thinking any condensation in summer would be minimal with the insulating value of cellulose between the cool interior and the air space behind the brick....?