WILHAMS Noise Control Products

Wilhams CFC Free PUNF Foam

Wilhams CFC Free PUNF Foam is a polyurethane foam designed to meet the fire resistance and high performance specifications with outstanding acoustic absorption characteristics.  The absorption coefficient is 0.97 with 50 mm thick foam at frequency of 1000 and 2000 Hz.  The fire test result is class “0” according to BS 476: Part 6 & 7 standard and UL94 classification V-0.  It also complies with the ATS 1000.001 standard on smoke toxicity.  It eliminates the long unsolved “Fiber Flying” problem with fibrous sound absorptive material which makes it suitable for use in clean environment such as hospital.

Density: 108 kg/m3
Indentation Hardness: 156 N
Tensile Strength: 88 kPa
Operating Temperature: -30 to +110˚C
Maximum Width: 2.05 m
Thickness: from 6 to 50 mm

Wilhams WB Mineral Load PVC Barrier

WB Mineral Load PVC Barrier is a mineral loaded PVC sound barrier mat with wear resistant skin.  It is designed to improve the sound insulation performance of existing panels of metal, wood, plastic, etc.  The barrier is fixed in intimate contact with the original panel and particularly effective in overcoming coincidence dip resonance found in stiff lightweight composites such as plywood sheets and hollow core panels.  The installation of this barrier is simple.  It is suitable for general purpose acoustic absorption.

Thickness: 2 to 4.5 mm
Weight: 5 to 10 kg/m2
Mean Sound Reduction Index: 22 to 28 dB
Flammability: FMVSS302 self extinguishing


Wilhams Acoustic Pipe Lag

Acoustic Pipe Lag is a laminate made by foam, fiberglass or mineral wool with a heavy mass layer with an outer facing of Class 0 reinforced foil.  The installation is simple and it can be used for internal and external duct linings to effectively reduce noise breakout.

Thickness: 25 mm
Size: 1000 x 2000 mm
Sound Absorption Coefficient (foam): 0.65 (at 2000 Hz)
Sound Absorption Coefficient (fiberglass): 1.00 (at 2000 Hz)


Wilhams ASTEX Fabric Covered Wall Panel System

ASTEX is a highly absorbent, fabric covered, composite panel.  It is not only decorative but also adds acoustic absorption whilst improving transmission loss and thermal characteristics.  It is constructed from high density fiberglass and enclosed by fire retardant fabric.  ASTEX is easy to install, is virtually maintenance free and may be hoovered or lightly sponged.  It can be used as lining for studio, office, auditoria where high acoustic absorption combined with level of aesthetically pleasing appearance is required.

Thickness: 25 and 50 mm
Standard Size: 2.5 x 1.2 m
Weight: 3.25 kg/m2 and 5.00kg/m2
Panel Fire Class: BS476, Part 6 & 7 – Class 0

Sound Absorption Coefficient: 

0.92 (25 mm thick panel with 25 mm air gap)
1.04 (50 mm thick panel suspended)




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