This spring and summer I'm finally converting the attic and putting in new kitchen cabinets. The big project is the dormer. From what I've gathered online, the framing and rafters are covered the same way you'd do your roof, with plywood, felt, shingles, and flashing. How do you dry-in the room, insulate it, and still maintain adequate ventilation?
We purchased a home in the Boston area that was built in the late 1800's and probably remodeled around 1940. We would like to dormer out the 3rd floor attic to make the bedrooms "legal" as far as cieling height, etc. What do I need to do to ensure that the current floors/roof area are strong enough to support my addition?