The RH99 HumiGuard Plus formula provides a 30 year warranty against sag, surface growth of mould and mildew when installed in Armstrong Peakform 24mm steel grid, Armstrong Suprafine or Silhouette 15mm steel grid and Armstrong Blue Tongue Aluminium 24mm grid.

Conforms with BCA Spec. C1.10 and tested to AS/NZS 3837:1998 – Group 1, ISO 5660 – Group 1 –S.

Anti-microbial Performance “BIOGUARD Acoustic” contains a unique anti-microbial treatment, providing resistance against growth of mould, yeasts and virulent strains of bacteria.

  • Anti-microbial performance provides protection against bio-contamination
  • ISO 3 Clean Room Performance
  • Durable, Washable, Smooth surface
  • Total Acoustics Performance (NRC+CAC)
    • High sound absorption for reduced reverberation and quieter spaces
    • High sound attenuation, improving room to room privacy
  • High light reflective finish
  • RH99 Humidity resistant
  • Sustainable Contribution
    • Global GreenTagCERT TM GreenRate™ Level A


  • Armstrong Bioguard Acoustic Data Sheet
  • Armstrong Installation Instructions
  • Armstrong RH99 Warranty
  • Armstrong Sustainability Brochure
  • Armstrong MSDS Mineral Fibre Ceiling Panels Datasheet
  • Eurocoustic

    Eurocoustic Tonga Ultra Clean

    The ideal tile for rooms presenting health risks

    Soft Fibre Ceilings