Blow-in Insulation Preparation

Rent an insulation blowing machine and purchase blow-in, also known as “loose fill,” insulation from a local home improvement center. Know the measurements of the walls to be insulated, and consult with a store associate and the label on the bag of insulation to find out how much insulation you'll need.

Equip yourself with protective gear, including work gloves, a face mask and safety goggles. Wear long sleeves and pants, as getting insulation on your skin may lead to itchiness and irritation.

Ventilate your home. Open all your windows and turn on any ceiling or window fans to help air out fumes from the insulation.

Clear out any objects on or along the walls. Remove paintings, decor, furniture and other objects that may obstruct your work.

Place drop clothes along the walls you plan to insulate, as installing blown-in insulation often makes a mess.

Use an electronic stud sensor to find the studs on the wall you plan to insulate. Run the sensor along the wall until its light or sound indicator activates, indicating a stud. Mark the studs with a pencil.

Equip your electric drill with a boring bit. Use a 1.5-inch bit for densely packed insulation or a 2-inch bit for simple blow-in fill. Use a bit that suits the type of wall you will insulate. Drywall bits accommodate sheetrock or plaster, while spur-point bits such as screw-point and spade bits work for wood, and tile bits bore through ceramic tile.

Drill one hole in between each stud on the wall. Make the holes on an even horizontal line with each one about 6 inches below the ceiling line. Avoid drilling in line with electric outlets, pipes or radiators.

Fit the blower nozzle into the first hole you plan to insulate, keeping the blower outside the house if possible. Wrap the nozzle with a rag if it is loose -- it should fit snugly into the hole. Fill the blower's hopper with insulation and you're ready to begin the insulating process.