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Acoustic Plaster

Armourcoat Acoustic® Plaster System

The Armourcoat Acoustic® Plaster System is designed to optimise the acoustics of interior spaces.  From large theatre halls, offices, classrooms, hotel receptions and private residences the use of hard sound reflective surfaces such as glass, wood and stone can cause excessive sound reverberation which leads to unpleasant noise levels.  The correct control of sound can create a calmer and more pleasant environment.  The Armourcoat Acoustic® Plaster System offers a clean flat and smooth mineral surface that can be applied seamlessly over large expanses to both flat and curved surfaces and offers excellent sound absorption.

Armourcoat Acoustic® has been granted the Quiet Mark Award 2019 - the international mark of approval from the Noise Abatement Society Charitable Foundation.  Quiet Mark is the international award programme and system of support for brands and consumers. Through its pioneering acoustic tests, the organisation awards its distinctive Purple Q Mark to products and services that show excellence in low-noise and high-performance.

Please view the latest case study video of the system installed at the Minster Building in London.


Creating a calm and inviting environment

The Armourcoat Acoustic® Plaster System comprises of a special mineral wool composite panel that is bonded onto the substrate and finished with a seamless layer of the Armourcoat Acoustic plaster. Armourcoat’s considerable expertise in the formulation of marble based plaster finishes have created an elegant finish that appears smooth and even but still allows sound energy to pass through the surface. This enables sound to be absorbed and attenuated in the layer of mineral wool beneath. The Armourcoat Acoustic® Plaster System can be pigmented to a range of standard or custom colours.  Firmly established as a recognised and approved acoustic system in the UK, worldwide availability is currently being implemented.

Excellent acoustic performance

The Armourcoat Acoustic® Plaster System has been tested by the University of Southampton (ISVR Consulting) following BS EN ISO 354:2003 ‘Airborne sound absorption measured in a reverberation chamber’. Test guidelines for type A mounting. The Armourcoat Acoustic® Plaster System achieved NRC ratings from 0.8, class C (30mm system) to 0.9, class A (50mm system).

Excellent environmental performance

Armourcoat Acoustic® panels are made in the UK to exacting quality standards - and are ready for immediate installation.  The mineral wool panels incorporate 75% recycled content, with the basecoat made from expanded glass with 90% recycled content, and the topcoat plaster made from 80% recycled marble.  The system contains no VOCs and is resistant to bacteria, mould and mildew.

Excellent thermal performance

Armourcoat Acoustic® mineral wool panels have a lambda value of 0.032 W/mK, to provide excellent thermal performance and reduce heat loss through the building envelope. The product meets the requirements of Part L Thermal Building Regulations 2010 (England & Wales) and Section 6 (Scotland).