Whether or not you install a subfloor in the attic you should insulate the space.
Attic subfloor insulation.
Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.
With the floor gone you ll have to find.
So it s time to pay close attention to what s happening up there.
Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer.
But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates.
Plan to pull up the flooring and layer new insulation on top of the old.
See below for a shopping list and tools subscribe to this old house.
Achieving greater r values in attics.
Insulation keeps warm air from rising through the roof during the winter and keeps the hot.
The higher the r value the better the thermal performance of the insulation.