I removed the carpet on a top floor living area that's over someone's bedroom. We have to remove the top floor board due to termite damage and water damage. I don't know what will be under the first layer of floor boards but can I put installation (fiberglass installation) between the lower and floorboard? What's under the floor boards. I do NOT own but rent so since I am paying for the materials (flooring and padding) I don't want to spend too much. What less expensive options do I have? I did find some felt with silver lining on top.
Using 12mm snap on laminate flooring.