Insulating brick veneer – No sheathing or wrap
We are currently remodeling a 1920s bungalow in Louisville, KY. Upon opening up the exterior walls (original plaster), we discovered that there is no sheathing or warp of any kind behind the brick veneer. The original construction of walls was simply brick veneer (corrugated brick ties to studs), air-gap, studs, and plaster walls (no insulation of any kind).
We are going back with drywall for the remodel, but we are not sure how best to insulate the walls when there is no barrier of any kind on the backside of the studs. We want to add something, but don’t want to harm the air-gap needed for brick/mortar nor do we want to create potential to capture/hold moisture in studs/drywall.
Initial input from contractors and installers ranges from installing fiberglass batten, using spray foam (open & closed), and foam board (cut & coble).
Looking for help to understand which insulation options/methods might work and the pros/cons of each when used where the wall construction lacks some of the typical components usually found in brick veneer construction in 1920s.
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