Step Three – Prep

Step Three – Prep

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Be sure to place the blowing machine on a level surface and plug it in to a 20-amp, 110-volt household outlet.
Keep GreenFiber Insulation away from heat surfaces and recessed light fixtures

Get Ready

  • Identify locations of recessed lights, furnace flues, heating vents, chimneys and other sources of heat or combustion in the attic. Install barriers around heat sources with clearances of at least 3 inches from the heat source. Check local code requirements for barriers. Heat trapped by any type of insulation can be a fire hazard.
  • Use baffles or vent chutes to maintain attic ventilation. Insulation should not cover attic soffit vents.
  • Determine the desired installed thickness of the insulation  then measure and mark the rafters as a guideline to be used during application.
  • Prepare a rigid barrier around the attic access hole to prevent insulation from falling out when you open the attic door. The barrier should be as tall as your installed insulation height.
  • Place the blowing machine on a level surface outside the building or in a garage.
  • Plug the machine into a 110-volt electrical outlet (20 amps or greater) using the shortest, heavy-duty extension cord possible (minimum 12-gauge).
  • Attach the hose to the machine. Run the hose from the machine through the attic access hole into the attic, avoiding sharp bends or kinks.
  • Make the proper air flow adjustment by either opening your machine’s product slide gate 3/4 of the way or, on some machines, closing the air valve to approximately 1/4 inch.
  • Locate one person in the attic to hold the application hose and the other near the blower to empty insulation bags into the machine hopper outside or in a garage.
  • Consider laying a knee board across the ceiling joists to provide a platform for standing or kneeling during installation.
  • Open a bag of GreenFiber Insulation and carefully place its contents into the hopper (any spilled insulation should only be reused if it’s free of debris). It is important to keep your hands, feet and clothing away from moving parts inside the hopper.