Measure the side of your home you will be installing the siding and insulation.
Measure pieces of the 3/8-inch foam insulation, and mark them using chalk before cutting them with scissors. Do this so they fit onto the side of your home without overlapping.
Load the nail gun with nails. Utilize the help of another person to hold the first piece of insulation on the side of the home. Use a ladder if necessary.
Nail the corners of the insulation into the side of the home so that it holds. Place a nail every 6 inches along the edge of the insulation so it is firmly affixed. Continue this until the entire area is covered.
Install the aluminum siding on top of the flat, energy-efficient 3/8-inch foam insulation.