Retrofit insulation in walls with no sheathing or WRB?
My house is a one-and-a-half story bungalow built in 1906, in Portland, OR. Balloon framing. Rabbeted shiplap 1×6 siding nailed directly to the studs, no sheathing or felt. Lath and plaster on the inside. The siding is in good shape and there’s little evidence of water in the studwall cavities (that I’ve seen.)
What options, if any, do I have for insulating the walls that won’t risk accumulating moisture in the cavities or result in rotting the siding or loosening the exterior paint?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part