Because the simplest and cheapest way to insulate an attic is to add material to the floor.
Attic subfloor insulation.
Plan to pull up the flooring and layer new insulation on top of the old.
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.
Cost effective way to save energy with this old house general contractor tom silva.
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.
Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer.
Whether or not you install a subfloor in the attic you should insulate the space.
The higher the r value the better the thermal performance of the insulation.
See below for a shopping list and tools subscribe to this old house.
You can achieve better thermal performance in your attic by adding an.