What is the best meathod to use when insulating the exterior walls of an old farm house? We have plaster and lathe interior walls in good shape and wood siding on the exterior also in good shape. I thought of blown in clellulose but fear moisture will be trapped and cause damage later on to both interior and exterior surfaces. Are there other blown in materials available vs. the traditional cellulose that are superior? What about foam products ? Will they expand and damage interior walls? Thanks
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