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Attic and Sidewall Installation Instructions



Do it yourself...and save!
Anyone with a basic understanding of construction can insulate their own home.  All it takes is a little time.  Ask an associate for everything you need to do a quality job yourself with GREEN FIBER cellulose insulation.

Follow these simple instructions:

How much insulation do I need, and how do I install it?

Insulation Zones for R-value
Recommended R-Values for Attic Areas

Insulation Zone














Oil, Heat Pump R-49 R-49 R-49 R-38 R-38 R-38
Electric Furnace








Measure your attic.

  1. Match the color of your location on the map with the heat type on the chart to determine the R-Value needed for you attic.  Locate the coverage chart on the back of the GREEN FIBER Cellulose insulation bag.  Move directly to the right from the desired R-value to the column headed "Maximum Sq. Ft. Coverage per Bag" and make a note of the number you find there.
  2. Multiply the length of your attic by the width, then divide the result by the number you found under the "Maximum Sq. Ft. Coverage per Bag" column.  The result is the number of bags of GREEN FIBER cellulose insulation you need to insulate your attic.  (Note: this is the minimum amount required to compensate for settling.  Be sure to install at least this number of bags.)

Blowing your attic.

  1. You may need to place a board across the ceiling joists in order to stand securely in the attic.  DO NOT walk on ceiling covering (drywall).  Too much weight will crack the ceiling.  A dust mask, adequate lighting and a hat are recommended.
  2. Before you begin to insulate, mark your vertical members to the depth you desire to aid your installation.  If duct work is present in the attic, make sure it is adequately sealed with duct tape.
  3.  Set up the blowing machine and make a stack of bags next to the machine as a working table. Place a bag on top of the stack and open the sealed end of bag and start breaking up the insulation as you feed the material into the hopper. NEVER fill the material over the round bars in the hopper. The best height is just above the agitator tines. NEVER reach into the hopper while the machine is plugged in. NEVER   place a whole bag of insulation into the hopper at one time.
  4. Hold the hose at an upward angle of 15% to obtain the best results.
  5. Begin insulating at the back of the attic area and work towards the entrance, Making certain that you do not cover heat producing devices such as recessed lighting, etc.  A 3" gap is required around these devices for safety.  This barrier may be made of furnace pipe or cardboard with an open top.  Make sure no insulation gets in this barrier.
  6. Be sure you do not cover soffit vents, as the attic must be properly ventilated to dissipate excess heat and moisture during the summer.

Measure your sidewalls.

  1. Find the total length of all the walls to be insulated.
  2. Multiply the length by the height of your walls. This will give you the side wall square footage.
  3. Divide the side wall square footage by the coverage per bag as indicated by the sidewall coverage chart.  This is the number of bags of GREEN FIBER cellulose insulation you need for your walls.

(NOTE: windows and doors and not deducted in the above calculation. You should deduct for these areas.)

Blowing side walls.

  1. Side walls require patience and planning.  Caution must be exercised.  Too much pressure in the wall cavity can cause the wall covering to push away. 

  2. Measure your studs or located them with a stud finder.  In some cases, nail heads can be seen on interior or exterior walls, revealing the pattern of the studs.

  3. 1-2" HOLES - On wall, measure 12" down from the ceiling and 24" up from the floor.  In each cavity, drill two (2)  1" holes neatly in line with one another for a neat finished look.  Add a third hole in the middle if your walls are 10' or higher. Use the 2 to 1 reducing nozzle.  1-2" Hole On wall measure down 4" from the ceiling and drill a 2" hole in each stud cavity. Use a 2" right angle nozzle.   

  4. After you have drilled your holes, start filling the cavity, filling the bottom hole first and continue to fill until the insulation stops flowing through the nozzle.  Turn the machine off and move to the next hole.  You may fill all the bottom holes first or do one cavity at a time, whichever works best for you.

  5. Plug the holes with plastic, foam or wood plugs.


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