Hello, I am considering installing closed cell insulation panels between the studs inside the walls of my 80 year old house. The plaster board is off and the siding is in good shape (redwood V-lap) I don't want to take the siding off as I did a thorough restoration on it last year. The vapor retarder (between the studs and the siding) is very old and starting to deteroiorate so I don't want to use fiberglass batts or cellulose as they can hold moisture. I would also use spray foam to seal the gaps and joints. I will then shear wall and sheet rock the walls. I live in Berkeley, CA where the climate is fairly moderate but my fear is that I might end up trapping moisture in there. Any advice on this would be much appreciated!
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