Insulation between joist in attic
We have an old farmhouse in central Ohio built in 1904. The attic access is a closed stairwell with a door and the entire attic is floored with t&g hardwood. This old house is a complete remodel project and all new wireing has replaced the old knob and tube. The attic rafters are a 12/12 pitch and the ceiling joist from the second story are 2X8 oak. What is the best way to insulate these cavitys between the ceiling and attic floor? The house is shaped like a plus if you can picture that. There is an open space on each side at the bottom of the rafters (soffit area) where the flooring stops so you can look from one side to the other through the cavity. This certainly helped with the wireing project. We still want keep the floor in the attic but certainly need to insulate as well. Thanks in advance for any advice.