- Locate and mark the wall studs along all of your exterior walls. Use
an electronic stud finder to locate them. Mark each edge of the studs with a
pencil about 6 inches from the ceiling. The areas between the studs, called
the stud bays, are where the insulation will be blown in.
- Drill a hole into the center of every stud bay, half way between
every marked stud, about 6 inches from the ceiling. Make the holes about 1/8
inch larger than the nozzle on the insulation blower with a hole saw.
- Put the nozzle of the blower into one of the holes in the stud bays.
Wrap a rag around the nozzle right next to the wall, sealing it to the wall.
This prevents the insulation from blowing back out of the hole. Holding the
rag and nozzle securely in place, start the machine.
- Repeat Step 3 for every stud bay along your walls.
- Patch the holes and use a putty knife to apply several thin coats of
drywall mud. Fill in any indentations or irregularities until you have a
flat surface that is level with the wall.
- After the drywall mud is completely dry, sand lightly with
- Prime and paint over the patched holes.