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Acoustic Performance

Noise Reduction Coefficient (NRC)

Noise Reduction Coefficient (NRC) is a general rating that tells you how much sound a surface (in this case a ceiling tile) will absorb. This rating is represented as either a percentage or a decimal, with 1 (or 100%) being perfect absorption and 0 (or 0%) being perfect reflection. In other words, the higher the decimal or percent, the more sound the tile will absorb.

Tile Type NRC Alone with Soniguard™
Stratford NRC.85+™ Acoustical System 85% NA
Stratford NRC.50+™ Acoustical System 50% NA
Feather-Light Ceiling Tile Collection 25% 50%
Signature Ceiling Tile Collection 15% 30%
Tin Ceiling Tiles 10% TBD
Mineral Fiber Ceiling Tiles 55% TBD

Sound Transmission Class (STC)

Sound Transmission Class (STC) is used to rate several different types of building materials for their ability to block sound and prevent it from passing through them. Putting appropriate material between you and a sound source can reduce the apparent loudness of the sound. Adding material with an STC of 5 is clearly noticeable and an STC of 10 or more cuts the apparent loudness by 50%. As the STC goes up, the loudness continues to go down.

Tile Type STC Alone with Soniguard™
Stratford NRC.85+™ Acoustical System TBD NA
Stratford NRC.50+™ Acoustical System TBD NA
Feather-Light Ceiling Tile Collection 10 13
Signature Ceiling Tile Collection 15 18
Tin Ceiling Tiles 18 21
Mineral Fiber Ceiling Tiles 22 24

Thermal Performance


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 (ceiling tiles, in this case!).

Tile Type R-Value Alone with AcoustoTherm® with Soniguard™
Stratford NRC.85+™ Acoustical System TBD NA NA
Stratford NRC.50+™ Acoustical System 6.012 NA NA
Ceilume Feather-Light Ceiling Tiles 0.012 0.790 6.012
Ceilume Signature Ceiling Tiles 0.028 0.806 6.028
Tin Ceiling Tiles 0.610 1.388 6.610
Mineral Fiber Ceiling Tiles 1.480 2.258 7.480

Drop Ceiling Insulation

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.

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.

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