Good evening all,
Question about properly insulating an under-insulated overhang that is resulting in very cold floors. I live in northern Baltimore County Maryland, the rear of the house faces north, the house is 14 years old, there is no house wrap, the basement is unfinished. The overhang is 24 inches deep and 9 inches high and the width between the floor joists varies. Spray foam is not an option at this time.
A: Add more fiberglass insulation to the existing insulation (for some reason I do not think this will really work well)
B: Use rigid foam insulation to create a "box" in each void and insulate the remaining void with fiberglass insulation - would I use adhesive (like liquid nails) to fasten the foam board to the inside of the overhand and well as the ceiling of the overhang?
C: Use a house-wrap material (i.e. Tyvek) on the outside of the overhang and do A or B as well
Would/could using rigid foam boards create an unfavourable moisture situation?
Winter has started and the floors are getting cold. Any advice is appreciated.