Composite - Barymat BM-1C

Noise Barrier Composite

BARYMAT BM-1C is an extremely versatile noise control composite. It consists of (from the top down) a clear, tough, polyester cover for contamination and weather (inc'l. UV) resistance, a loaded, flexible, 1.6 lb. per sq. ft. barrier for transmission loss (.8 lb. also available) and a .25 in. urethane foam decoupler. BARYMAT BM-1C is very effective as an acoustic lagging to reduce breakout noise in pipes and ducts and can be used to increase transmission loss in walls and ceilings.
Performance Data
Performance data is an extract from NRC - Ottawa report on tests according to ASTM E 90-75 and ASTM E 413-73.

APPLICATION AND PRODUCT DATA

USES


• Pipe / Duct Wrap            • High TL Walls & Ceilings

• Lagging for Machinery Housings

BARYMAT BM-1C is easy to apply and is cut with common utility knives. For secure and permanent installations use reinforced duct type tape, mechanical fasteners or specified adhesive - available from Wilrep Ltd.

Thickness

BM-1C: Approx. .3125 in. - overall composite thickness.

Standard Dimensions

Sheets: 54" wide X 72", untrimmed (27 sq. ft.)
Rolls: 54" wide X 30' , untrimmed (135 sq. ft.)
CUSTOM TRIMMING AND DIE CUTTING CAN BE PROVIDED

Typical Physical Properties

Barrier Colour: Black
Foam Colour: Charcoal Grey
Foam Density: ASTM D 3574-86 - 1.8 - 2.2 lb. / cu. ft.
Composite Weight: BM-1C - 1.7 lb. / sq. ft. (BM-1A - 0.9 lb. / sq. ft.- also available)
Flammability: MVSS 302 - Passes

 
Frequency (Hz)
Transmission Loss (dB)
BM-1C
 
80
23
 
100
23
 
125
23
 
160
23
 
200
23
 
250
23
 
315
22
 
400
26
 
500
30
 
630
33
 
800
38
 
1000
42
 
1250
45
 
1600
47
 
2000
47
 
2500
47
 
3150
51
 
4000
53
 
5000
55
 
6300
56
 
 
 
STC
34