What's the Best Way to Insulate a Floored Attic?

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curiousburke
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Q:

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?

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