The dB Engineering Lag Series combines a loaded vinyl noise barrier with a fibrous glass scrim reinforced aluminum foil facing on one side. B-10 LAG is commonly used for wrapping noisy iron, steel, and plastic pipe, ducts, valves, and heat exchangers in a wide variety of indoor and outdoor applications. The entire series has excellent corrosion and outdoor weathering resistance, high strength, and excellent conformability. The reinforced foil facing readily ac
cepts a matching tape for quick and easy installation.
B-10 LAG is available in combination with a nominal one-inch thick (B-10 LAG/QFA-3) or two-inch-thick (B-10 LAG/QFA-9) quilted fiberglass decoupler to form a tight-fitting “floating” noise barrier. The quilt decouples the loaded vinyl barrier from the noise emitting surface achieving greater noise reductions. The one-step installation of decoupler, barrier, and outer jacket offers substantially lower installation costs. The composite combination is also designed to provide thermal insulation to reduce energy consumption.
Barrier Backed composite, a reinforced loaded vinyl noise barrier with a quilted fiberglass absorber on one side
Barrier Backed composite.
BBC composite products were used to wrap a pipe at a wastewater treatment facility (shown to the right), resulting in a 15 dB reduction in noise.
Barrier Backed composite
STC ratings of 26-30
Easy to cut and install
Accepts matching tape
Good corrosion resistance
High and low temperature applications
Quilted fiberglass decoupler available
Meets Class A flammability rating per ASTM E-84
Custom acoustical jackets
Sound Transmission Loss (dB) Frequency (Hz)
Per ASTM: E90
Physical Properties of Components
1 Lb. PSF
-10o to + 180oF
.2 lb. PSF
-20o to + 350oF
.4 lb. PSF
-20o to + 350oF
UL94-Meets VO FMVSS-302: Pass
ASTM E-84 “Surface Burning Characteristics of Building Materials”;
Meets Class A Rating: Flame Spread Index 12.5 – Smike Density Index 19.5
Table showing how the human ear perceives noise reduction.