Cover the walls with insulation from the sill plate to the plastic covered dirt floor.
How to insulate floors on addidiot.
When insulating a bonus room floor you ll usually be working from below.
When you re using fiberglass batting insulation material run it about 6 inches or so onto the crawl space floor.
If you would prefer to install the insulation without the help of a professional one option would be to use foam boards.
Most homes require at least r 13 though homes in cold areas can benefit from more insulation.
Once in place secure the boards with either insulation tape or caulking.
Department of energy recommends r 11 3 insulation under floors in warm climates and an r 25 6 to 8 in cold climates.
The sill plate is the first piece of framing lumber and it runs on top of the crawl space wall.
These stiff boards are placed close together on top of the floor joists underneath the home.
If you have 2 inches of insulation your floor has an r value of 6 4.