We bought a 1960 brick rambler (solid brick and brick-over-block) house. My wife hates the brick, we plan to substantially increase the size of some of the windows, we are planning an addition (up), we would both like a higher R-value (the inside is too small to insultate inside), and we both love the look of natural wood siding. A designer has suggested we add rigid foam to the outside under cedar siding.
I would appreciate thoughts, recommendations, and avoidable pitfalls in planning out this project. Is it do-able? What kind of rigid insulation? Thickness? Furring strips? Fasterners? Vapor barriers or wraps?
I am a novice. The house is in a humid wooded area in Maryland where many homes struggle against mold. Thanks to the economy, I need to be economical. We would like for the end result to look like a wood cabin, and seamlessly tie the newly sided first floor brick with the new second story. The inside walls are furred with 1x and, yes, 3/4-inch papered fiberglass, and plastered (over backerboard).