All of our information is sourced from manufacturer data.

EnergyShield CGF

Atlas Roofing Corporation

EnergyShield CGF

One-Click Request

Acelab will find & contact reps to deliver answers to your inbox.


Rigid Panels Rigid Panels

Polyiso (Polyisocyanurate) Polyiso (Polyisocyanurate)

Ceiling Insulation, Exterior or Interior Wall Insulation Ceiling Insulation, Exterior or Interior Wall Insulation

Design Options

Product Description

Atlas EnergyShield CGF (formerly Rboard) is composed of a closed cell polyisocyanurate (polyiso) foam core, faced with a non-reflective coated glass-mat facer on both sides.
Atlas EnergyShield CGF combines high R-value, enhanced durability from two coated glass-mat facers, and water resistive attributes in a high performance rigid wall insulation.



Standard Sizes: 1' 4", 2' 0", 4' 0"


Standard Sizes: 8' 0", 9' 0"


Standard Sizes: 0-1/2", 0-3/4", 1", 1-1/2", 2", 2-1/2", 3", 3-1/2", 4"

Manufacturer Design Notes

EnergyShield® CGF can be used as part of a WRB and potentially part of an air barrier assembly. In these types of assemblies it is required that all joints, penetrations, and openings be taped or sealed by other means. Atlas recommends flashing EnergyShield® CGF into rough openings and other building transitions. The coated glass-mat facers are compatible with most flashing or sheathing tape, joint fillers, sealants, and adhesives.

Performance Data

R-Value Per Inch

Measure of the thermal resistance of the product per inch of thickness, imperial units.

°F·ft^2·h / BTU / inch


NRC Value

The Noise Reduction Coefficient values of this product

Fire Resistance

Amount of time the product can withstand fire

Water Vapor Transmission

An imperial perm is defined as 1 grain of water vapor per hour, per square foot, per inch of mercury

perm (imperial)


Smoke Development

As defined by the ASTM E84 testing standard

Units: (unitless)


Flame Spread

As defined by the ASTM E84 testing standard

Units: (unitless)



UL Solutions

GREENGUARD Gold Certification

UL Solutions

Microbial Resistance

Atlas Roofing Corporation

802 Highway 19 N Ste 190 Meridian 39307

(601) 484-8900

Learn More