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Absorption Measurements

Sound absorption measurements are performed in a reverbaration room
according to the main requirements in ISO 354-2003

Overview - absorption measurements

NoRockwool ProductsWeighted absorption
1 Marine Batts 45, 50 mm αw = 0.75
2 Marine Batts 45, 50 mm + alu foilαw = 0.65
3Marine Slab 60, 50 mm αw = 0.85
4     Marine Slab 80, 50 mm αw = 0.90
5Marine Slab 80, 50 mm + 1 mm perf. steel suspended 10 mm αw = 0.90
6 Marine Slab 80, 2 x 50 mm αw = 0.95
7 Marine Slab 80, 2 x 50 mm + glass net + 1 mm perf. steel αw = 0.95
8 Marine Slab 80, 2 x 50 mm + glass net + 1 mm perf. steel suspended 10 mm αw = 0.95
9 Marine Slab 140, 50 mm αw = 0.85
10 Marine Slab 150, 50 mm αw = 0.75
11 Marine Slab 200, 30 mm αw = 0.75
12 Marine Slab 200, 50 mm αw = 0.75
13 Marine Slab 200, 2 x 30 mm αw = 0.80
14 Marine Firebatts 100, 40 mm αw = 0.80
15 Marine Firebatts 100, 40 mm + alu foil αw = 0.50
16 Marine Firebatts 100, 60 mm incl. pin's and washer αw = 0.90
17 Marine Firebatts 100, 60 mm incl. pin's and washer, covered by 19 μ foil αw = 0.90
18    Marine Firebatts 130, 30 mm αw = 0.70
19Marine Firebatts 130, 50 mm αw = 0.80
20     Marine Firebatts 130, 2 x 30 mm αw = 0.90
21 Marine Firebatts 130, 30 mm + 30 mm alu + 1 mm perf. steel suspended 10 mm αw = 0.30
22 Marine Firebatts 150, 2 x 50 mm αw = 0.90
23 Marine Wired Mat 80, 50 mm αw = 0.90
24 Marine Wired Mat 80, 50 mm incl. alu foil αw = 0.75
25 Marine Wired Mat 80, 100 mm αw = 0.95
26 Marine Wired Mat 80, 100 mm incl. alu foil αw = 0.75
27 Marine Wired Mat 90, 45 mm αw = 0.90
28 Marine Wired Mat 90, 45 mm + Rockwool Marine Acoustic foil (19 μ)αw = 0.77
29    Marine Wired Mat 90, 45 mm + Rockwool Marine Acoustic foil (19 μ) + perf. steel plate (suspended)αw = 0.77
30Marine Wired Mat 90, 2 x 45 mm αw = 0.95
31Marine Wired Mat 90, 45 mm with 400 gr/m2 glass cloth αw = 0.75
32 Marine Wired Mat 105, 30 mm αw = 0.80
33 Marine Wired Mat 105, 75 mm αw = 0.90
34 Marine Wired Mat 105, 100 mm αw = 0.90