Consider first the eye signals that look to the left hand side. The left hand side is predominantly to do with accessing material from your past, like images and sounds: Imagine for a moment that you are speaking to a friend of yours. You are discussing the plans for the weekend and what you want to do.
Installing in Unfinished Walls. Start by measuring the height and width of the wall cavities between the studs. Cut your polyurethane foam board insulation to fit these measurements. Use a box cutter, or a table saw or circular saw to save time when cutting and installing large quantities. Press each sheet of insulation into the wall cavity so it is held in place via contact with the studs.
Fiberglass insulation usually comes with a paper moisture barrier. Always make sure the vapor barrier is facing the heated portion of your home. If this were an attic, the barrier would be on the bottom. When adding insulation, you'll first want to bring the fiberglass up to the tops of the joists. To do this, use an unfaced insulation with no paper moisture barrier. Once you're level with the joist tops, you can add more insulation by running it at right angles to the joists.