ACOUSTIC MODULAR WALL SYSTEM
Zero Avoidable Waste
Akustak®, by Mute Group, is a patented, acoustic modular wall system.
Designed for materials optimisation and off-site construction, Akustak® eliminates waste during manufacture and installation, whilst its unique demountable form facilitates recovery and reuse at the point of deconstruction.
Akustak® has been laboratory tested for fire safety and resistance to sound, guaranteeing Building Regulations – Part B and E compliance.
Prefabricated and portable, Akustak® radically reduces construction timescales, with systems installed from 15 m2/per hour.
How Akustak® Works:
Supporting frame installed
Wall plastered and/or decorated
Only applies to Akustak® standard finish
An independent, twin-faced, acoustic modular wall system; typically installed to form new spaces/separations, including those where Building Regulations – Part B (fire safety) and Part E (resistance to sound) compliance is required (both in terms of purpose-built dwelling-houses & flats and dwelling-houses & flats formed by material change of use).
An independent, single-faced, acoustic modular wall system; typically installed in front of existing walls, for example, party walls between dwelling-houses & flats, where a significant increase in sound insulation is required.
A dual independent, twin-faced, acoustic modular wall system; typically installed to form new spaces/separations, where very high levels of sound insulation are required, for example, interview rooms, recording studios, test chambers, etc…
Akustak® Optimizing Project Efficiency
from Beginning to End.
Quick & Easy Access On-Site
Measuring ≤ 0.8 m2 / 25 kg, per module, Akustak® can be safely manually handled by one man (as per HSE guidelines), fitting through narrow staircases and corridors and inside elevators. Moreover, its intelligent, stackable design, minimises transport movements, at the point of delivery, and storage demands on-site.
Prefabricated and portable, Akustak® transforms interior wall construction into a rapid process of assembly; from 15 m2/per hour, subject to configuration.
Precision engineered, in a factory environment, Akustak® accurately interconnects, to form pre-specified wall sizes; minimising on-site errors and re-work.
Minimised Noise, Dust & Disruption On-Site
Manufactured off-site, Akustak® minimises trades and site activities; typically, installations require 1 to 2 fitters, a cordless drill and basic hand tools. This too, enhances health and safety standards on-site, including Covid-19 infection prevention and control.
Zero Avoidable Waste
Designed for materials optimisation and off-site construction, Akustak® eliminates over-ordering and expendable off-cuts, during manufacture and installation. Moreover, its unique demountable form, facilitates recovery and reuse, at the point of deconstruction.
Building Regulations Approved
Laboratory tested for fire safety (BS EN ISO 1364-1) and resistance to sound (BS EN ISO 10140-2 & 717-1), Akustak® (standard finish) guarantees Building Regulations – Part B and E compliance. Aku125 (standard finish), provides 79 minutes fire resistance and Rw 49 dB airborne sound insulation.
Outstanding Airborne Sound Insulation
& Fire Resistance Performance
Laboratory tested across the product range, Aku125, Aku133 and AkuStudio (standard finish) provide airborne sound insulation values of Rw 49, 43 and 62 dB, respectively.
Additionally, Aku125 (standard finish) has been laboratory tested to provide 79 minutes fire resistance.
Ply-lined, as standard, Akustak® enables secure surface-mounted fixtures and fittings, e.g. radiators, shelving units, TV brackets, etc…, without the need for reinforcements and/or wall plugs, whilst alternative fascias are available, e.g. plywood, rather than plasterboard, for greater robustness, ease of disassembly and/or decorative effect.
Additionally, Akustak®, through its unique demountable form, facilitates recovery and reuse, at the point of deconstruction.
ExCel District Energy Centre
Case Study: Aku133 - Royal Docks, London
The ExCel District Energy Centre provides heat and power to the ExCel Exhibition Centre and surrounding area, through the use of Combined Heat & Power engines (CHP).
Airborne sound, emanating from these engines, was the cause of continuous noise nuisance complaints from the adjoining residential dwelling-apartments. Akustak® was specified to mitigate the problem, from the Energy Centre side.
It’s modular construction and manoeuvrability (particularly at height and within confined spaces), made Akustak® the perfect application for this logistically challenging project.
The modules were modified to suit the rigours of an industrial environment, including a fire-treated, impact resistant fascia; ensuring the installation is fit-for-purpose, for years to come.
Following the installation, sound levels, in the adjoining dwelling-apartments, were assessed to be between 23 to 30 dB (LAeq). On this basis, World Health Organization guidelines were successfully met, as stipulated by the local authority, i.e. in bedrooms at night, the guidance limit is 30 dB LAeq, 8h and 35 dB LAeq, 16h for living rooms and bedrooms, during the day.
St. Pancras Chambers
Case Study: Aku133 - King's Cross, London
The grade I listed, St. Pancras Chambers, originally built in 1873, is comprised 67 luxury apartments and the five-star Renassance St Pancras.
Some of the apartments are affected by noise ingress, emanating from passing underground trains. Akustak® was specified to mitigate the problem, in relation to an apartment located on the 4th and 5th floors.
The installation involved replacing the existing lightweight, metal framed, wall linings, which, prior testing demonstrated, were propagating significant vibration acceleration levels, compared with the supporting masonry walls; in one test position, for example, 16.20 mm/s2 versus 2.23 mm/s2
Critically, acceleration in vibration, results in an amplification of reradiated noise – in this case, noise levels, during train pass-bys reached 35 dB (LAFmax), whilst background noise levels (when no trains were passing) measured 27 dB (LAeq).
By way of a guide, BS 4142 (one of the UK’s most widely used standards for the assessment of environmental noise) states that where noise is around 5 dB higher than the background noise level, this is an indication of an "adverse impact", whilst, where noise is 10 dB or more higher than the background noise level, this is an indication of a "significant adverse impact."
Pre-completion, sound insulation test data coming soon.
Whilst Akustak® was employed here for its acoustical properties, on a logistical level too, it was a befitting application. Prefabricated and portable, it minimised project timescales and disruption, generally, within a highly populated building, where access for construction materials, particularly to the upper floors, is limited.