noise control

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Soundproofing underlay

Silentstep is a high-performance acoustic carpet underlay, comprising of a flexible mass-loaded barrier fused onto high-density premium foam underlay. The combination of these two products allows Silentstep to reduce the transmission impact-generated noise such as footfall, and airborne noise such as speech.

Silentstep was developed to meet market noise reduction requirements in multistorey living, commercial, automotive and marine markets. Simple to cut and lay, it offers excellent support and a firm cushioned base for all types of carpet applications. It is ideally suited for lightweight flooring constructions such as timber and marine applications, where fibreglass and composite floor panels are used.

When laying carpet over a floor constructed using lightweight timber and joists, typical standard underlay only reduces impact noise and offers little effect in reducing the transmission of airborne noise. Silentstep can significantly reduce both impact and airborne noise transfer through a floor system. This means that noise generated from speech and electronic audio technologies, such as radio and television, can be reduced along with noise generated by impact such as footfall.

Silentstep products are environmentally safe, contain no ozone-depleting substances and complies with European and Australian standards for Volatile Organic Compound emissions.

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Decidamp products reduce the ringing or tinniness from metal panels and structures, which in turn reduces noise by preventing it from being transmitted through the vibration of the panel.

Decidamp is available as an aluminium panel, a constrained hybrid polymer or constrained multi-layer sheet construction.

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Advanced micro-perforated metal absorber.

Sorberscreen® Micro is a unique, micro-perforated metal sound absorber. It eliminates the need for flow resistive textile backing, as used on conventional perforated metal screen products.

Sorberscreen® Micro has a hard, durable finish consisting of 1 mm aluminium, with subtle aesthetic appeal, which could be mistaken for fabric.

The perfect finish for sound absorption in architectural and marine walls, ceilings, and noise absorber panel applications, it also finds use in vessel engine rooms, transportation engine bay applications, and around enclosures for both noise control and thermal dissipation.

Available in plain aluminium, anodised or pre-painted to a range of colours. Sorberscreen™ Micro should not be painted or powder coated after micro perforation as this will change the acoustic performance of the panel.

The effective sound absorption obtained across the frequency range using Sorberscreen™ Micro can easily be adjusted by simply changing the depth of the backing void.

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Sorberbarrier was developed with the aim of simplifying the acoustic treatment of enclosures, engine bays and plant rooms. Sorberbarrier achieves this with a unique multi-layer construction that combines materials with different acoustic properties, removing the need for the complex constructions of the past. Sorberbarrier allows for simple and effective combined treatment of airborne and transmitted noise.

Sorberbarrier is a composite construction.

At the heart of Sorberbarrier is its high mass, flexible noise barrier, based on Wavebar®technology which is formed between two layers of acoustic foam, consisting of a decoupling layer and sound absorption layer.

The absorption layer is faced with a wide range of surface finishes to suit specific application requirements. For example, a perforated vinyl can be applied for a pleasing aesthetic appearance inside a cabinet or an aluminium foil facing can be used in engine bays. For specialist applications Sorberbarrier is also available with polyester fibre or fire retardant melamine foam.

Sorberbarrier is available in standard size sheets, with or without a self-adhesive backing, or as individual components cut to size and shape.

Areas of use:

  • Engine compartments and firewalls of boats, trucks, buses and construction machinery
  • Machinery and equipment enclosures
  • Spa motor enclosures
  • Containerised generator sets
  • Pump motor enclosures

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Soundlag is a high-performance composite acoustic lagging product consisting of a reinforced aluminium foil faced, mass loaded flexible vinyl noise barrier bonded to a decoupling layer. The product was developed to reduce noise break-out from pipes, valves, fan housings and ductwork in commercial, industrial and domestic buildings.

The unique construction of Soundlag gives the dual benefits of a noise barrier and a noise absorber. The highly dense and flexible mass layer provides excellent sound reduction properties, whilst the decoupling layer breaks the vibration path between the substrate and the mass barrier, thus allowing the vinyl external wrap to remain flexible and thereby optimise its performance. The external foil facing offers a fire resistant covering and an excellent surface to join adjacent sheets.

Proven over 20 years success


  • Excellent acoustic performance: 25dB(A) noise reduction
  • Maximises noise control by providing high sound absorption (reverberation control) and superior transmission loss
  • Excellent flame resistance
  • Long useful life
  • Easy to cut
  • Easy to install

Areas of Use:

  • Hydraulic and waste pipes in all locations
  • Air-conditioning ducting and shrouds
  • Compressor wraps
  • Spa motor wraps

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Sylomer, the special PUR Elastomer material developed by Getzner is one of the leading products on the international market for vibration isolation and mitigation.

The elastic polyurethane material deforms under tension and compression loads, but always returns to its original form. In doing so, these reliable materials isolate and reduce vibrations which can have negative effects on humans, the environments and materials.

Sylomer is used in its cellular or compact form for many applications in civil engineering and machinery. In most of them, Sylomer is used as an elastic interlayer like a spring. The characteristics of this spring can be adapted to the need of application and of the construction, or the construction method by selecting the Sylomer type – including Sylodamp and Sylodyn, the thickness, and the loaded surface area.

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Echohush Cosmo panels solve the problem of reflected sound, offering fire resistance, robustness, uniformity and simple installation in a revolutionary room acoustic wall panel.

These decorative Cosmo panels soundproof in a myriad of situations, from schools, bars, restaurants and call centres to studios, showrooms and (home and commercial) theatres – anywhere you need greater privacy, improved acoustics or enhanced speech intelligibility.

Echohush Cosmo panels can be incorporated into the design process or retrofitted once construction has been completed.

The panels are available in six standard designs and nine stock colours or depending on the project size by designer’s choice.

Echohush Cosmo panels are manufactured from sheet metal and unlike timber or fabric panels, they contain no chemicals that may outgas and are not affected by moisture. The sheet metal face is made acoustically transparent by decorative cut-outs and is then formed into a three dimensional panel and powder coated to your colour choice. The three dimensional shape creates a cavity which is in-filled with an acoustic medium giving the panels outstanding acoustic performance.

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Subdue, is a lightweight multi-layered panel offering exceptional acoustic properties. The outer layers of the sandwich panel are constructed from a choice of lightweight but rigid and strong high-quality materials, such as plywood, glass- reinforced plastic or metals, with a range of sound insulating materials as inner cores. Subdue was developed to meet noise reduction requirements in marine, rail, industrial and OEM markets.

The panels are specially designed to optimise acoustic solutions at lower weights and are an ideal choice in weight-sensitive applications where strength and good sound insulation properties are required. The panels can be supplied in standard or custom-designed modular sizes for ease of installation, offering labour, cost and time savings.

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Wavebar, is a high-performance, flexible mass-loaded vinyl noise barrier, offering superior acoustic transmission loss.To achieve this high performance, the Pyrotek engineering team developed Wavebar to be dense, thin, highly-flexible, tear-resistant and strong. These properties give the product high transmission loss throughout the various weight ranges.

Stiff lightweight panel constructions, such as plasterboard, drywall, plywood and hollow core walls, typically have coincidence dip resonance which allows noise to transmit through a construction. The coincidence dip is dependent on the material’s stiffness and thickness and occurs at the point where the sound transmitted through the structure matches the natural frequency of the panel.

Wavebar prevents coincidence dip resonance. The dense core mass layer reflects and absorbs the transmission of sound through walls, ceilings and floors, reducing the critical frequencies generated from mechanical equipment, engine noise and electronic audio technologies such as radio and television.

Wavebar products are environmentally safe, contain no ozone-depleting substances and comply with European and Australian standards for Volatile Organic Compound emissions.


  • Inside cavities or over lightweight wall, ceiling and floor constructions. Ideal for home theatre rooms, office partitions, meeting rooms
  • Between the plenum chamber of a floor slab, the roof and adjoining partition walls
  • Acoustics doors to improve performance
  • Portable acoustic curtains and screens
  • Easily draped over fencing to create an acoustic barrier
  • Automotive cabin application to reduce engine and road noise transmitting through a structure
  • Can be laminated onto lightweight structures to damp vibration and reduce airborne noise

Wavebar can be purchased with different facings for improved flame resistance, outdoor applications, with additional fire retarders or made from recycled polymers.

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Reapor was developed to maximise noise energy absorption, and resolves issues of fire, weather aging and contamination damage.

Reapor uses recycled glass as its core component, and by nature is sensitive to the environment. During manufacturing, the glass is processed to form expanded granules. Each granule acts as an acoustic absorber in its own right.

Through a heating process the granules are fused together to form a homogenous panel which creates a highly efficient acoustic absorber. This process removes the need for binders leaving the product free from out-gassing, developing smoke in a fire and breakdown through binder failure, giving the product the highest non-combustible fire rating.

Reapor has a wide range of applications where effective noise reduction is required in outdoor applications or indoor areas of high humidity or fire concerns. Its natural resistance to moisture ensures it will not significantly retain or absorb moisture, unlike traditional porous or open-cell materials.

Reapor panels are bonded using adhesive or mechanically fixed depending on the application and substrate. The panels can be machined and processed using standard wood working equipment and dust protection. Reapor panels can be easily painted with water-based paint, rendered for a seamless finish or routed to provide varying texture and shadowing effects.

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Sorberfoam is the next generation of combustion modified, flexible acoustic foams, offering high noise absorption properties across a broad frequency range. It was developed to meet market requirements for reducing reverberation noise in the domestic, commercial, OEM and automotive markets.

In conjunction with leading laboratories and test facilities, Pyrotek has formulated and developed a polyurethane foam that outperforms traditional acoustic foams by controlling the cell size, porosity, density and the flow resistivity throughout the cell structure.

Sorberfoam has been proven to absorb substantially more energy across the entire frequency range than traditional polyurethane foams.

Traditional polyurethane foams often break down through hydrolysis (foam rot) under hot, humid and acidic conditions. Sorberfoam is engineered to resist degradation or foam rot.

Sorberfoam offers an alternative to mineral fibre products that tend to shed fibres during application. If not encapsulated, those fibrous products can be deemed a health hazard. The tendency for fibrous products to lose thickness over a period of time means their absorption properties will also be reduced.

Sorberfoam eliminates the hazards and offers an equal and safer alternative in noise absorption.

Sorberfoam Facing Options:

  • Plain
  • Foil (ALR)
  • Film (PU)
  • Mylar (M)
  • Perforated Vinyl (V)
  • Aluminium Glass Cloth (AGC)

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Sorberpoly acoustic insulation is a fine fibre polyester, non-woven with excellent sound absorbing and thermal insulation properties, useful in high humidity applications. It is also fuel, oil and grease resistant. Under normal applications, Sorberpoly will last a life-time.

Sorberpoly is lightweight, hydrophobic (non-wicking) and easily cut, using scissors or a sharp knife.


  • Fills voids behind panels, and in cavities, e.g. wall cavities, ceiling voids
  • Fills voids that can conduct noise from adjacent rooms or from outside to inside marine bulkheads and deckheads
  • Noise control and thermal insulation for HVAC equipment
  • Acoustic baffles
  • Acoustic panels
  • Office partitions
  • Open area reverberation control, as a backing material

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Ultrafonic’s Green Glue Noiseproofing Compound is an easy to use soundproofing product for rigid building materials such as drywall, cementboard, OSB, plywood, and MDF board.  Tests by CSIRO show that when two sheets are combined with Green Glue Compound the acoustic result is equal to four boards combined and, effectively reduces the transmission of low frequency sound, commonly experienced where home entertainment systems and theatre systems are close by.   Green Glue Noiseproofing compound works by ensuring an effective reaction to sound waves where there is less resonance as a result of shortened of sound decay.  Such characteristics also make it ideal to use in home theatres, recording studios, apartments and homes. 


Improves sound isolation  +  Reduces impact noise  +  Reduces structure borne sound transmission  +  Effective on walls, floors and ceilings


1 case of Green Glue is equivalent to 12 tubes (29 oz) will cover 100 to 200 square feet  +  15 seconds to dispense tube  +  Applied directly onto boards then raised onto wall where it is pressed or screwed into place

Ultrafonics Wallmate® is a high-tension fabric wall mounting system designed for commercial and residential developments requiring acoustic treatment.  Depending on the room, the sound proofing system is usually installed over a sound absorbing material including fiberglass and polyester mat.  The system can also be used to construct false walls, creating a barrier or covering audiovisual equipment. Wallmate® has two simple interlocking pieces, one is mounted onto the wall or acoustic panel, the other is used to mount the acoustical fabric and interlock to the first piece. The result is a clean finish with elegant detail that can be dismounted and cleaned easily. Visit the Ultrafonic website to download an installation brochure and additional materials and tools used, including alignment tape, pneumatic staplers.


Square profile in 11mm, 14mm and 27mm depths  +  Appropriate fabrics range from lightweight silks and heavy weight upholstery  +  Typically installed over a layer of sound absorbing materials (polyester or fibreglass mat)  +  two-part, wall-mounted ABS extrusion


Fabric is easily removed for cleaning or replacement

The dedicated people at Ultrafonic are all experienced with engineering technology and readily make their knowledge available with their high quality acoustic services.  The team believes that the most effective type of acoustical engineering is the best outcome with a minimal cost.

Ultrafonic service involves basic measurements and calculation which provide a solid opinion on how the recommended acoustic installation will change and improve the room.  Such a service gives customers an idea of what they are paying for an optimum acoustic room.

Customers interested are involved in an easy step by step process that is low cost and beneficial.  First, a professtional quality, high definition, microphone-recorder is sent to the open-plan office, multipurpose hall or place of worship.  Here you and your accomplice will follow a series of simple instructions and record the results. Then the recorder and results are collected from you. The team analyses the results and provide a written report of their findings and a recommended acoustic treatment.

Ultrafonic’s BASF Basotect G foam is a light weight, fire resistant, chemical resistant and anti-microbial acoustic architectural foam suitable for a range of large scale commercial and civic applications.  The versatile product remains stable over a wide range of temperatures which makes it an ideal acoustic solution for swimming stadiums, indoor aquatic centres, child care facilities, health and aged care facilities, restaurants, auditoriums, performing arts venues, call centres, places of worship, class rooms, community centres and black box theatres.  Ultrafonic supplies a range of acoustic noise control products from Basotect acoustic foam and can supply Basotect foam as custom sheets specified to meet different acoustic requirements.

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