Mineral Ceiling tile

Armstrong PERLA OP

Armstrong PERLA OP provide a smooth white laminated finish, and with excellent Class A sound absorption and good sound attenuation, they are the ideal solution for both open plan and corridor applications.

Not available in:
South East Asia
  • Brunei
  • Cambodia
  • Indonesia
  • Laos
  • Malaysia
  • Myanmar (Burma)
  • Philippines
  • Singapore
  • Thailand
  • Vietnam

Materials & Options

Armstrong PERLA OP
600 x 600 mm
1200 x 600 mm
Board Edge Detail
Tegular 24 Edge Detail
Tegular 15/90 Edge Detail

Technical specifications



  • Excellent sound absorption (NRC 0.90) and good sound attenuation (25 dB)
  • Good light reflectance (85%)
  • ISO 5

Application Areas

  • Ideal for open spaces (call centres, libraries, cafeterias, etc.) as well as corridors.


Sound Absorption
NRC = 0.90
Sound Attenuation
CAC = 25 dB
Light Reflectance
Fire Reaction
Class 0/1 as per BS 476 Part 6 & 7
2.6 kg / m²
Thermal Conductivity
λ = 0.040 W/m K
Humidity Resistance
RH 99%
Clean Room
Recycled Content
Dry Cloth
Moist Cloth

Downloads & Contact

Our proactive, service-driven mentality stands out just as much as our products. We have the technical know-how to provide specialist consulting expertise, as well as the feet on the ground to deliver the custom solutions you need on-site.