top of page
BASWA Acoustic Plaster Logo.JPG
BASWA phon Fine sample.JPG

BASWA Phon Fine | Refined Single-Coat Seamless Acoustic Plaster
 

Arthur Acoustics provides specialist specification and certified UK installation of BASWA Phon Fine, a seamless, single-coat acoustic plaster system combining a noticeably smoother marble-sand aesthetic with streamlined installation times. Engineered for discerning residential, hospitality, and gallery interiors, BASWA Phon Fine absorbs up to 90% of unwanted echo while maintaining clean, uninterrupted ceiling and wall planes without visible joints, tiles, or grids.

Why Architects and Homeowners Choose BASWA Phon Fine

​

When an interior demands a finer, more understated surface texture than standard commercial acoustic finishes without the extended programme of a two-coat build-up, BASWA Phon Fine delivers the ideal balance of visual elegance and installation efficiency.

  • Refined 0.5 mm Marble Aggregate. Hand-trowelled using a fine 0.5 mm marble-sand grain, producing a smooth, discreet surface that blends effortlessly with traditional painted plasterwork.

  • Streamlined Single-Coat Application. Applied in one precision coat directly over pre-coated mineral wool acoustic panels, saving valuable on-site programme time.

  • True Monolithic Continuity. Creates seamless surfaces across expansive flat ceilings, vaulted arches, domes, and curved walls with zero expansion joints.

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

  • Invisible Speaker Integration. Compatible with plastered-over invisible speakers, allowing high-performance audio systems to disappear completely into the ceiling plane.

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

 

How the BASWA Phon Fine System Works

​

Our accredited Arthur Acoustics craftsmen bond high-density, microporous mineral wool panels to solid concrete or plasterboard substrates. After grouting and precision-sanding the panel joints completely flat, a single uniform layer of BASWA Fine microporous marble plaster is hand-applied across the surface.

Sound waves pass freely through the microscopic pores of the 0.5 mm marble finish and are absorbed inside the acoustic backing panel. Because the system is sealed at the rear against air movement, it prevents dust-tracking and panel telegraphing over the life of the building.

 

Technical Specifications & Acoustic Performance

​

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

  • 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. Smooth 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 pool suites up to 90% relative humidity.

 

Ideal Applications for BASWA Phon Fine

​

With its refined 0.5 mm texture and single-coat turnaround, BASWA Phon Fine is widely specified for:

  • Luxury Private Residences. Restores calm, natural acoustics to open-plan kitchen-living spaces, double-height hallways, and home cinemas without compromising interior minimalism.

  • Galleries, Museums & Cultural Venues. Provides a quiet, distraction-free backdrop that complements curated art and architectural lighting.

  • Fine Dining Restaurants & Boutique Hotels. Eliminates harsh dining-room clatter while preserving an elevated, plaster-finished aesthetic.

  • Executive Boardrooms & Suites. Enhances speech clarity and privacy in high-specification corporate interiors.

 

Nationwide Installation by Certified BASWA Craftsmen

​

Arthur Acoustics manages every stage of your BASWA Phon Fine installation, from NBS specification and CAD detailing through to final hand-trowelled finishing. Based at our Henlow Specification Centre on the Bedfordshire and Hertfordshire border and our St Albans office, our installation teams operate across London, Cambridge, Oxford, Manchester, and throughout the United Kingdom.

 

Order a Sample or Book a Showroom Visit

​

Inspect the 0.5 mm marble-sand texture of BASWA Phon Fine in person and compare it alongside our 0.7 mm Base and 0.3 mm Top finishes. Contact our technical team to request a physical sample box or book a consultation at our Henlow showroom.

​

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

bottom of page