- 1). Use a hammer and pry bar to remove a course of siding, in a horizontal line at a height equal to about a half a foot below the interior ceiling. Keep the siding intact. Set it aside.
- 2). Use an electronic stud finder to locate each stud in the exterior wall. Put a pencil mark midway between each of the studs, in the exposed area where you removed the siding.
- 3). Set the hose end from an insulation blower over the first mark. Trace around the mouth of the hose with a pencil. Repeat for each of the marks.
- 4). Cut out each of the traced circles with a jigsaw, making them a little larger than the traced circles.
- 5). Load the insulation blower with loose insulation. Feed the blower hose into the first hole, all the way in to the bottom of the cavity.
- 6). Turn on the machine, filling the space between the two studs. Withdraw the hose as the insulation fills the space. Repeat for each hole.
- 7). Fill the mouth of each hole with spray foam insulation, sealing each one off. Let it dry. Reinstall the siding using trim nails and your hammer.
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