How to Install Fiberglass Insulation


Adding insulation can cut your utility bills significantly. Most homeowners can do the work themselves, reducing the costs of the project.

Things You'll Need

  • Fiberglass Insulation
  • Work Gloves
  • Measuring Tapes
  • Portable Clamp Lighting
  • Wooden Poles
  • Staplers
  • Utility Knives
  • Boards
  • Pollen/dust Masks
  • Safety Glasses
  • Stepladders
  • Utility Blades
  • Make sure that you have the necessary tools ready - tape measure, straightedge, utility knife (with new blades), and a squeeze-type stapler.

  • Consider having the following items available - a pole for pushing insulation into roof rafters and other hard to reach areas, stepladder, boards (for sitting or standing in attic areas with no floor), portable lighting source.

  • Wear a long-sleeved shirt, long pants, and work gloves - insulation can irritate bare skin.

  • Select an insulation of the appropriate thickness to achieve the R-value you want (R-value is a measure of insulation's effectiveness) and that will fit in the available area.

  • Leave fiberglass insulation in its packaging until you are ready to use it.

  • Place the insulation between studs, joists, and rafters, stapling into place as you go.

  • Stuff scraps of insulation in any open areas where heat loss may occur.

  • Cut insulation as necessary by placing it paper/foil side down and pressing firmly with your straightedge where you want to cut. Use your utility knife to cut the insulation, using the straightedge as a guide.

  • Go back and caulk any cracks or areas around windows and doors where drafts can get through.

Tips & Warnings

  • Consider using a respirator mask when working.
  • Wear eye protection when working.

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