BASWA Phon Classic Fine | Flagship Two-Coat Seamless Acoustic Plaster
 

Why Architects and Specifiers Choose BASWA Phon Classic Fine

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When a project demands complete visual harmony between acoustic surfaces and conventional plasterwork, BASWA Phon Classic Fine offers unmatched surface flatness and aesthetic authenticity.

• Traditional Fine Plaster Aesthetic. Hand-finished with a 0.5 mm marble-sand top coat over a base layer, creating a smooth, refined surface indistinguishable from traditional fine plasterwork.

• Superior Two-Coat Flatness. The two-coat application corrects minor substrate variations and achieves razor-sharp planar precision across expansive ceilings, coffers, and curved geometries.

• Monolithic Visual Continuity. Covers flat soffits, vaulted arches, domes, and sweeping walls seamlessly across large spans with zero expansion joints.

• Invisible Speaker Integration. Fully compatible with plastered-in speakers, allowing high-end multi-room audio and cinema systems to remain completely hidden beneath the plaster surface.

• Unlimited Custom Colour Tinting. Supplied in crisp architectural white (~NCS S 0500-N) or tinted to match virtually any RAL or NCS colour specification without affecting acoustic absorption.

• Non-Combustible & Eco-Certified. Carries a Euroclass A2-s1, d0 non-combustible fire rating, is 100% VOC-free, and supports BREEAM and LEED sustainability targets.

 

How the BASWA Phon Classic Fine System Works

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Our accredited Arthur Acoustics craftsmen bond high-density, microporous mineral wool panels directly to solid concrete or plasterboard substrates. Once the panel joints are grouted and precision-sanded flat, our team applies a foundational base coat of BASWA Base plaster across the entire surface.

After curing, a second finishing coat of 0.5 mm BASWA Fine marble plaster is hand-trowelled to create an unbroken, microporous finish. Sound waves pass effortlessly through the microscopic pores of the two-coat marble skin and are absorbed within the backing panel, while the sealed rear build-up prevents dust-tracking and panel telegraphing over the life of the building.

 

Technical Specifications & Acoustic Performance

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BASWA Phon Classic Fine is engineered across four system profiles to meet exact architectural and acoustic requirements:

• System Thicknesses. Available in 30 mm, 40 mm, 50 mm, and 70 mm profiles.

• Sound Absorption Performance. Certified Class A sound absorption with Noise Reduction Coefficient (NRC) ratings from 0.80 up to 1.00, depending on system depth and mounting configuration.

• Surface Finish. Two-coat microporous marble-sand aggregate with a 0.5 mm grain diameter.

• Fire Classification. Euroclass A2-s1, d0 (non-combustible) to EN 13501-1.

• Humidity Resistance. Suitable for damp environments and indoor swimming pool halls up to 90% relative humidity.

 

Ideal Applications for BASWA Phon Classic Fine

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As our flagship architectural acoustic system, BASWA Phon Classic Fine is specified across prestigious projects nationwide:

• Luxury Private Residences. Restores calm, natural acoustics to open-plan living spaces, double-height hallways, and home cinemas while preserving pure minimalist lines.

• Heritage & Listed Buildings. Sensitively integrates thin-profile 30 mm and 40 mm acoustic systems into historic interiors, matching traditional lime and gypsum plaster textures.

• Prestigious Galleries, Museums & Universities. Controls reverberation in culturally significant venues without altering architectural character.

• Executive Boardrooms & Luxury Hospitality. Enhances speech clarity and acoustic comfort in flagship corporate suites, fine dining restaurants, and boutique hotels.

 

Nationwide Installation by Certified BASWA Craftsmen

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Arthur Acoustics manages every stage of your BASWA Phon Classic Fine project, from NBS specification and CAD detailing through to substrate preparation and master hand-trowelled finishing. Operating from our Henlow Specification Centre on the Bedfordshire and Hertfordshire border and our St Albans office, our installation teams serve projects across London, Cambridge, Oxford, Manchester, and throughout the United Kingdom.

 

Order a Sample or Book a Showroom Visit

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Experience the traditional plaster finish of BASWA Phon Classic Fine firsthand and compare it alongside our 0.7 mm Base and 0.3 mm Top grades. Contact our technical team to request a physical sample box or book a consultation at our Henlow showroom.

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Call us on 01462 534610 or email baswa@arthuracoustics.co.uk to speak with an acoustic specialist.