Please Note: Effective November 1st, Bridger will be known as OrePac Building Products. Thank you for your continued loyalty and we look forward to introducing our new increased product offering.

Energy Shield

Energy Shield® is cost effective, energy efficient sheathing material. R-values range from 3.3 to 22.0, depending on thickness. Energy Shield® offers several “green” qualities, including zero Ozone Depletion Potential (ODP) and zero Global Warming Potential (GWP) due to Atlas Blowing Agent Technology. When properly installed, Energy Shield® wall insulation will provide added insulation and yield immediate energy savings in both Commercial and Residential applications.

Energy Shield® is manufactured with trilaminate facers (foil-kraft-foil) on the top side and a trilaminate or solid foil facer on the unprinted back side. Energy Shield® can help meet or exceed the Model Energy Code, and is available in a variety of thicknesses.

Standard Thicknessin1/25/83/
Pieces Per Package453631231511181513
System R-value*
4' x 8' Size - sq. ft./Pkg14401152992736480352576480416
4' x 9' Size - sq. ft./Pkg162012961116828540396648540468

* System R-value is the product R-value plus the 2.8 R-value as indicated in the ASHRAE Handbook Fundamentals, for 3/4” dead airspace with reflective foil one side.This information is for use in designing wall systems to comply with FTC Regulations.

** Conditioned thermal values were determined by ASTM Test Method C 518 at 75 F mean temperature. All test specimens were conditioned in accordance with procedures outlined in ASTM C 1289-07, Section

Note: Canada’s CCMC has set all polyiso foam R-values at 6.0 per inch - straight line - for all available thicknesses. Published R-values are determined by ASTM C518
as noted above.

Energy Shield® Applications

For specific information about all Atlas Sheathing applications, please download the Atlas Insulating Sheathing Installation Details. Energy Shield® is typically specified for:

  • Exterior Wall Applications
  • Fire Resistant Wall Assembly (1 Hour)
  • Insulated Crawl Space
  • Interior Insulation Slab on Grade
  • Interior Insulation Under Slab
  • Cavity Wall/Masonry Insulation
  • Metal Stud Wall Applications
  • Re-Siding Applications
  • Stucco Applications (Hardcoat)

ASHRAE Standard 90.1 and Continuous Insulation

ASHRAE Standard 90.1 is the energy code reference in the International Building Code (IBC) and the International Energy Conservation Code (IECC). As such, this standard defines code minimums for the classes of constructions covered. In 2008, for the first time in over 19 years, ASHRAE increased the minimum required prescriptive R-value (resistance to heat flow) for roof and wall insulation levels in Standard 90.1

The next IRC and IBC code cycles will require the installation of a layer of continuous insulation over the entire exterior of walls of residential and commercial construction. This requirement will provide for a "thermal break" and added R-value to the structure - making the building much more airtight and energy efficient, as compared to current and past required construction. Foam insulation with an R-value of 5 will be the minimum acceptable continuous insulation. Atlas Energy Shield® polyiso foam insulation at 3/4" thick provides an R-value of 5.0. Atlas recommends thicker insulation and promotes Beyond the Code initiatives that work to create more energy efficient buildings today for a greener tomorrow.

Water Resistive Barrier System

Energy Shield® is a component of a wall system recognized as a Water Resistive Barrier by the International Residential Code Report #ESR-1375.

Installation instructions available as a downloadable PDF