Now I have another scenerio. What if we did the extreme and remove the exterior clap board siding labeling to put back in order as removed and insulate from the outside. By the way we have a brick and stone fondation with just a 2 foot crawl space. No basement. We do have soffet ventelation on the 2nd floor for the attic plus 2 air turbines in the metal roof.
Which would be more appropriate for this situation. Spray foam or batten.
And we do know that the windows should be replaced during the renovation.