Thermal Insulation

Thermal insulation is the method of reducing the amount of heat transfer from one area to another (in this case, from above the ceiling to the room below and vice versa). The greater the insulating capability, the greater the energy efficiency, and the more money you save.


R-Value is a measure of a material's ability to resist heat traveling through it. The higher the R-Value the better the thermal performance of the material.

Type Alone With AcoustoTherm® With Soniguard™
Stratford NRC.85+™ Acoustical System TBD NA* NA*
Stratford NRC.50+™ Acoustical System R-Value 6.012 NA* NA*
Feather-Light Ceiling Tile Collection R-Value 0.012 R-Value 0.790 R-Value 6.012
Signature Ceiling Tile Collection R-Value 0.028 R-Value 0.806 R-Value 6.028
Stratford NRC.85+™ Acoustical System
With AcoustoTherm®NA*
With Soniguard™NA*
Stratford NRC.50+™ Acoustical System
AloneR-Value 6.012
With AcoustoTherm®NA*
With Soniguard™NA*
Feather-Light Ceiling Tile Collection
AloneR-Value 0.012
With AcoustoTherm®R-Value 0.790
With Soniguard™R-Value 6.012
Signature Ceiling Tile Collection
AloneR-Value 0.028
With AcoustoTherm®R-Value 0.806
With Soniguard™R-Value 6.028

* Both NRC.85+ and NRC.50+ include Soniguard within the system, thus, we have chosen to represent only its R-Value alone (which includes Soniguard).

Soniguard™ Drop Ceiling Insulation

Soniguard™ Drop Ceiling Insulation Soniguard is thermal-bonded, non-woven batting made from polyester fiber that is safe for skin contact. Batts are 24 x 24 x 1.5 inch nominal; use two above a 24 x 48 inch panel. Do not install beneath fire sprinklers.

  • Thermal Resistance: R-6, ASTM C518
  • Water Vapor Sorption: 0.0033 percent, ASTM C1104
  • Surface Burning Characteristics: Class A, ASTM E84
  • Does not promote fungal growth, odor, or corrosion: ASTM C665
  • Fungal Resistance: 0 (no growth), ASTM C1338

Placing Soniguard above your suspended ceiling tiles will dramatically improve the acoustical performance of any drop ceiling - no matter what type of tile (vinyl, mineral fiber, and even tin!) you have installed.

AcoustoTherm® Backpanels

AcoustoTherm® Backpanels AcoustoTherm® Backpanels have an inverted-pan shape and nest atop our panels to create a three-inch deep air pocket that dampens acoustic vibrations and provides thermal insulation.

Made from 0.013-inch thick translucent vinyl with a frosted finish, AcoustoTherm® can be used with luminous ceilings to diffuse above-ceiling light sources and reduce shadows caused by detritus that would otherwise accumulate directly on ceiling panels. For most uniform lighting, light source should be at least six inches above backpanels.

AcoustoTherm® has Class A surface burning characteristics and can be used with or without fire sprinklers installed above or beneath ceilings.

AcoustoTherm® Backpanels are nominally 24 x 24 inches and require six-inch clearance. When two backpanels are used above a translucent 24 x 48 inch panel, a shadow will be visible at the center of panel.