I took the advice that I got here n hearth.com to insulate before I get my insert. I am done insulating the walls in which we used roxul r-15 with 6 mill plastic for a vapor barrier and plenty of tyvec tape. Now I am ready to do the attic and I'm looking for suggestions, advice and cost estimates. Note: The house is in central New Jersey. I'm guessing I have about 800 square feet. We would like to still use a portion for storage space if possible. We plan to live here for the long haul. Also the ventalation is mushroom caps and a temp controled attic fan, there are no sofits.