Traditional acoustical drop ceiling tiles are designed to reduce the echo within a space. They do so by allowing noise to pass through them from the occupied space below, into the void above the tiles. This means that sound in pipes, ductwork, and noise from equipment can also pass through them, disturbing people in the space below. Also, if the common walls are not constructed all the way to the top of the plenum, noise will flank over them into the adjacent spaces.
Noise Barrier Ceiling Tile Covers effectively block sound transmission through ceiling tile systems. They combine a limp barrier layer with an absorber/decoupler to achieve much greater isolation than would be achieved with a layer of insulation alone.
MODEL NBCTC 1-1Description: Combines a flexible 1 LB PSF mass loaded vinyl noise barrier with a 1″ fiberglass decoupler to enhance its acoustic performance by raising the barrier above the T-Grid system for a gap free installation
Nominal Thickness: 1.00″
Standard Sizes: 24″ x 24″, 24″ x 48″, 30″ x 30″, or 30″ x 54″
Weight: 1.2 LB PSF
MODEL NBCTC 1-1-1Description: Combines a flexible 1 LB PSF mass loaded vinyl noise barrier sandwiched between two layers of 1″ fiberglass. Offers increased acoustic performance by absorbing sound that is reflected back down from the plenum.
Nominal Thickness: 2.00″
Standard Sizes: 24″ x 24″, 24″ x 48″, 30″ X 30″, or 30″ x 54″
Weight: 1.4 LB PSF
| Product | Sound Transmission Loss (dB) Frequency (Hz) |
STC | |||||||
| Thickness(In./Nom.) | Wt.lB/S.F. | 125 | 250 | 500 | 1000 | 2000 | 4000 | ||
| NBCTC 1-1 | 1.00″ | 1.2 | 11 | 16 | 24 | 30 | 35 | 35 | 27 |
| NBCTC 1-1-1 | 2.00″ | 1.4 | 12 | 16 | 27 | 40 | 44 | 43 | 29 |
| Product | Sound Absorption Data Frequency (Hz) |
||||||
| 125 | 250 | 500 | 1000 | 2000 | 4000 | NRC | |
| NBCTC 1-1 | .12 | .47 | .85 | .84 | .64 | .62 | .70 |
| NBCTC 1-1-1 | .19 | .99 | .96 | .80 | .57 | .99 | .85 |
