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