Installation Sheet: Reflective Foil Insulation in Walls & Ceilings

Installing radiant barrier insulation in walls and ceilings is an easy project that yields long term comfort gain and lower utility costs. Used as a stand alone product, reflective foil insulation creates a barrier to stop the transfer or radiant heat. Used in conjunction with fiberglass or other insulation designed to stop the flow of conductive heat, foil insulation creates not only a radiant barrier but adds R-Value to existing insulation.

InfraStop® insulation is unaffected by moisture and humidity and creates and excellent vapor barrier. It is quick, safe, and easy to install. All you need is a razor knife or scissors and a staple gun.

There are two ways InfraStop® is installed in wall and ceiling applications.

  1. Between Joist or Stud: Staple Tab Method
  2. Over Joist and Stud: Square Edge Method

#1: Between Joist or Stud: Staple Tab Method

Radiant Barrier Foil Insulation Installed in Walls & Joists

For this method, you need InfraStop® 16", 18", or 24" foil/double bubble/foil rolls in the convenient "tab 2" or "staple tab" option. These rolls have extra material on the sides that allow the foil insulation to be stapled to studs are joists. This is the easiest way to install for ceiling and wall applications.

  1. Measure individual stud or joist bays and cut insulation.
  2. Push insulation approximately 1/2" into bay and staple the insulation using the staple tab.
  3. Tape all seams with foil insulation tape.
  4. Attach and install drywall or finish surface as usual.

#2: Over Joist & Stud: Square Edge Method

Insulation for Masonry Wall For this method use 16" x 100' InfraStop® Insulation You are essentially stapling the insulation from one side of the wall or ceiling to the other. The important part is to make sure when the insulation meets the stud of joist to staple back into the cavity approximately 1/2" to create an airspace.

  1. Run insulation perpendicular to the studs or joists.
  2. Staple at every joist or stud at least 1/2" into the cavity.
  3. Tape all seams with reflective foil insulation tape.
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