Composition :

• Profile Hacierco 74SPA with a thickness of 0.75 mm
• Mineral wool infills for perforated webs (Rockwool)
• Vapor barrier (Sopravap)
• Rockacier uncoated 120 mm ou 130 mm thick (Rockwool)
• Multi layer bituminous waterproof membrane

Performance and characteristics :

• Sound reduction index Rw(C;Ctr) = 41(-2;-7) dB
• Acoustic absorption αw = 0.60
• Thermal transmittance Up = 0.36 W/m².K estimated
• Weight: 35 kg/m²
• Spacing: 21 cm