Sierra is a premium laminated-visual mineral fibre ceiling tile with high sound absorption of 0.7 NRC and light reflectance of about 85%. It provides ISO 5 (Class 100) clean room performance and is offered in Board, Tegular and Microlook edge details, 13 mm thick. Sizes are 600x600 mm (all edges) and 600x1200 mm (Board).

Key features

• Humidity resistance up to 95% RH
• Cleanability: with dry cloth
• Light reflectance 85%
• Euroclass reaction to fire A2-s1,d0
• Premium laminated visual
• High sound absorption 0.7 NRC
• High light reflectance approx. 85%
• ISO5 (Class 100) clean room performance

Applications

• Open plan offices
• Call centres (IT/ITRS)
• Large conference rooms
• Education
• Theatres / auditoriums

Specifications

Reaction to Fire (as printed): A2-s1,d0 | Sound Absorption (NRC): 0.7 | Sound Attenuation (CAC): 28 | Light Reflectance: 85% | Recycled Content: up to 62% | Humidity Resistance (max RH): 95% RH | Cleanability: with dry cloth | Relative Price Index (brand symbol scale, Min/Mid/Max): Max | Sound Absorption by One-Third Octave Band (alpha p): 125 Hz: 0.41, 160 Hz: 0.45, 200 Hz: 0.57, 250 Hz: 0.59, 315 Hz: 0.59, 400 Hz: 0.63, 500 Hz: 0.59, 630 Hz: 0.61, 800 Hz: 0.69, 1000 Hz: 0.71, 1250 Hz: 0.79, 1600 Hz: 0.85, 2000 Hz: 0.90, 2500 Hz: 0.94, 3150 Hz: 1.02, 4000 Hz: 0.99 | Sound Attenuation Dncw by One-Third Octave Band (dB): 125 Hz: 19, 160 Hz: 20, 200 Hz: 24, 250 Hz: 24, 315 Hz: 22, 400 Hz: 22, 500 Hz: 22, 630 Hz: 22, 800 Hz: 25, 1000 Hz: 26, 1250 Hz: 29, 1600 Hz: 31, 2000 Hz: 34, 2500 Hz: 36, 3150 Hz: 40, 4000 Hz: 42 | Acoustic Test Basis: Tested in independent third-party quality-assured laboratory per EN ISO 354, EN 20140-9 and ISO 140-9 with ceiling installed over 200 mm and 300 mm cavity; NRC per ASTM C423; Dncw per EN ISO 717-1 (p28) | Thickness: 13 mm | Noise Reduction Coefficient (NRC): 0.70 | Sound Absorption Coefficient (125 / 250 / 500 / 1000 / 2000 / 4000 Hz): 0.41 / 0.59 / 0.59 / 0.71 / 0.90 / 0.99 | Ceiling Attenuation Class (CAC): 28 dB | Fire Reaction: A2-s1, d0 as per EN13501-1 | Thermal Conductivity (lambda): 0.037 W/mK | Humidity Resistance: RH 95% | Weight: approx. 3.14 kg/m2 | Clean Room Performance: ISO 5 (Class 100) as per ISO 14644-1 | Edge Details and Compatible Suspension: Board: Prelude 24 mm; Tegular: Prelude 24 mm; Microlook: Suprafine 15 mm | Available Sizes: 600 x 600 x 13 mm; 600 x 1200 x 13 mm (Board only)

Standards: EN 13501-1 (Euroclass) A2-s1,d0 | EN ISO 717-1 (Dncw) | EN 20140-9 / ISO 140-9 (sound attenuation) | EN ISO 354 (sound absorption) | ASTM C423 (NRC) | GreenPro (brand states Armstrong mineral fibre ceilings are GreenPro classified - brochure-level statement, p16) | EN 13501-1 (A2-s1, d0) | ISO 14644-1 (ISO 5 / Class 100)

Warranty: Conditional: warranty offered only when ceiling tiles are installed with Armstrong steel angles and installation is carried out as per Armstrong Ceiling Solutions recommendations (warranty period not legible in extracted text)