05-25-2022, 08:53 PM
Do the walls and ceiling have insulation? If the roof/ceiling isn't insulated, insulating the floor probably isn't going to help much.
For the floor, I'd access the bays between the joists from underneath, fill them with rigid foam or fiberglass, and then attach sheathing to the bottom of the joists.
For the floor, I'd access the bays between the joists from underneath, fill them with rigid foam or fiberglass, and then attach sheathing to the bottom of the joists.