feet and the previous owner in the 70's had about 4 inches blownin over the exiting roll insulation. But in doing so, they skipped the baffles be added between every rafter and the existing blown-in pulled out where ever its blown all the way into the soffit
I had my attic insulated a few years ago. From what I remember the insulating material was blownin. Can anyone tell me what material is used for insulating an attic?