Place a stepladder at one end of the room, positioned in the corner, between two of the parallel ceiling joists extending across the room.
Unroll a section of faced insulation. Lift the end up on the ladder and place even with the sill joist at the side of the ceiling, faced side down. Staple the paper facing on either side of the insulation to the inside edges of the joists, placing staples every 6 to 8 inches.
Unroll the insulation and continue to stuff between the joists, stapling as you go, until you reach the end of the ceiling. Cut the insulation to fit with a utility knife.
Move the ladder to the next pair of joists. Place strips of insulation until the ceiling is covered.
Place a stepladder at one end of the room, positioned in the corner, between two of the parallel ceiling joists extending across the room.
Unroll a section of unfaced insulation. Lift the end up on the ladder and place even with the sill joist at the side of the ceiling. Wedge an insulation hanger in between the joists every 6 to 8 inches to hold the insulation in place.
Unroll the insulation and continue to stuff between the joists, holding in place with hangers, until you reach the end of the ceiling. Cut the insulation to fit with a utility knife.
Move the ladder to the next pair of joists. Place strips of insulation until the ceiling is covered.