Hi Money Pit! I have a pine board floor in my attic. The attic has a walk-up staircase and 2x10 joists, so it's meant to store lots of stuff. The old insulation is minimal, probably wool, but in fair condition. I would like to add more insulation, either batts or blown-in. I'm considering removing the flooring and adding 2x4s across, but I think that would mean I have to do blown-in insulation. I prefer batts because it would allow me to do the attic in stages without having to rent a machine several times. The flooring will of course be put back after. What do you recommend?