Acoustic Plaster

Seamless, natural mineral acoustic plaster system with powerful sound absorption

Made from naturally sustainable mineral materials, Armourcoat Acoustic Plaster is designed to optimise the acoustics of interior environments by absorbing unwanted sound, helping to create calm and inviting spaces.

Outstanding Acoustic Performance

Natural Material

Sustainable Accreditations

Fire Rated

Supply, Install & Warranty

Bespoke Service

Available in 2 PERFORMANCE SYSTEMS

48mm System – Class A

A Weighted Sound Absorption Coefficient of 0.95-1.00 (dependant on chosen finish) was achieved when the 48mm Acoustic Plaster System was independently tested to European Standard EN ISO 354.

28mm System – Classes B & C

A Weighted Sound Absorption Coefficient of 0.75-0.80 (dependant on chosen finish) was achieved when the 28mm Acoustic Plaster System was independently tested to European Standard EN ISO 354.

Armourcoat acoustic plaster system on ceiling at commercial Minster Building, London

Modern Craftsmanship

Armourcoat Acoustic Plaster consists of mineral wool panels with a factory applied acoustic plaster basecoat. These panels are installed on site by skilled applicators before the surface is hand finished with seamless undercoat and topcoat layers of natural mineral acoustic plaster. Flat, curved and vaulted areas of up to 200m² can be achieved without any joints and multiple detailing options are available for lighting, services and features. A typical installation takes just four days.

Available in four off-white tones as standard, endless bespoke colours, textures and effects are also possible.

A: Seamless Acoustic Plaster Topcoat
B: Acoustic Plaster Undercoat
C: Acoustic Plaster Basecoat
D: Mineral Wool Panel
E: Bondplast Gypsum Adhesive
F: Substrate

Select a Finish

Fine

Grain

A world of design possibilities

In addition to the two finishes offered as standard for immediate installation, Armourcoat Acoustic Plaster can be tailored to the design intent of the most individual projects.

From almost endless colour possibilities through to earthy stone textures and crisp graphic design features, our skilled team of in-house craftspeople are here to make your design concept a reality.

We believe anything is possible.

Get in touch

Bespoke Finishes

Can’t find the finish you want? Our bespoke service can help you get the perfect look for your project

More About Bespoke Service

INSTALLATION PROCESS

ACOUSTIC BASE PANELS

Pre-coated acoustic panels are installed alongside any required details for services.

ACOUSTIC UNDERCOAT

A seamless layer of acoustic undercoat plaster is applied, unifying the surface.

ACOUSTIC TOPCOAT

Our marble-based acoustic topcoat plaster is hand applied in the specified finish.

Crafted with sustainability and wellbeing in mind

Creating interiors that not only look beautiful but also have a positive effect on health and wellbeing is now more important than ever.

By effectively absorbing unwanted sound, Armourcoat Acoustic Plaster supports the creation of calm interiors, minimising the risk of low-level stress caused by background noise and improving speech intelligibility.

In addition, the natural mineral-based acoustic system is made from a minimum of 72% recycled marble, contains no measurable VOCs and is resistant to bacteria, mould, and mildew, ensuring healthier spaces for those who use them.

Learn more through our RIBA accredited CPD

Designing for acoustic comfort is a critical component in the creation of successful interior environments. Our RIBA accredited CPD is on exactly this subject, providing an overview of the fundamental principles of acoustics and how calm, comfortable interiors can be achieved through the technical performance and aesthetic versatility of a seamless acoustic plaster system.

The CPD also addresses key aspects of sound absorption, relevant legislation and standards, practical design considerations, installation and maintenance guidance, sustainability and representative project applications.

We are able to deliver CPD sessions face to face or remotely, please contact us to request an apointment.

BOOK A CPD

ACOUSTIC PLASTER FAQS

Who installs Armourcoat Acoustic Plaster?

Acoustic Plaster is a highly technical product that requires specialist installation to ensure outstanding performance. Projects in the UK are installed directly by Armourcoat, projects outside of the UK are installed by one of our trained and approved worldwide application partners.

How long does installation take?

Installation times vary depending on the size and complexity of the project. A typical installation time frame for the system is four days.

Can Armourcoat assist with specification and detailing?

Yes, our specialist team are happy to advise on detailing requirements, please contact us for more information.

Is Acoustic Plaster suitable for bathrooms, swimming pools, and wet areas?

Yes, Armourcoat Acoustic Plaster can be used in well ventilated spaces exposed to moisture up to 75% relative humidity, including bathrooms, swimming pools and wet areas.

Can Acoustic Plaster be applied to curved surfaces?

Yes, Acoustic Plaster can be applied to curved and domed surfaces. A minimum radius of 1m is required for our 28mm system, and 3m for our 48mm system.

Can Acoustic Plaster be cleaned and repaired?

Yes, Acoustic Plaster can be cleaned and repaired, and even colour changed if desired without effecting performance.

What is the maximum surface area before the need for a day joint?

Up to 200m2 can be finished seamlessly with our Grain finish, and up to 100m2 with our Fine finish. Maximum continuous surface areas are dependant on project complexity, site and access conditions.

What substrates are suitable for application?

Armourcoat Acoustic Plaster can be applied to plasterboard on a suspended frame, GRG, cement board, concrete as well as existing plastered and previously decorated surfaces.

It is always advisable to discuss specific substrate enquiries with our Sales Team who can answer individual queries. Please contact our sales team with your project details for further information.

Can Armourcoat Acoustic Plaster be used on walls?

Yes, Acoustic Plaster can be installed on high-level walls areas above 2.5m. Application to high-level wall areas, in addition to ceilings, can deliver an even greater improvement in the acoustic comfort of a space.

How can I obtain a quote for Armourcoat Acoustic Plaster?

Project costs are determined by the size and complexity of the project, dictated by the duration of time our skilled team require to complete the on-site application.

Please contact our sales team with your project details for a comprehensive supply and installation quote.

Acoustic Plaster