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Reduction Measurements

Rockwool Marine & Offshore has host a series of sound reduction measurements carried out by well-known test institutes, Ødegaard Danneskiold-Samsøe A/S, Copenhagen, Denmark and TÜV Nord Systems GMBH & Co., Essen, Germany.

Measurement according to ISO 15186-1:2000 and ISO 717-1:1996

Different types of steel bulkhead/deck constructions have been made and insulated with different Rockwool products/solutions. Please note these test results are to be seen as example guidelines. It is important to ensure all edges and joints are made correctly, otherwise less reduction values could be seen.
When installing, for example, an A-60 Bulkhead solution by Rockwool Marine Firebatts 130, 2 x 30/30 mm, a built-up with a different steel design could possibly result in a change in the real life reduction dB(A) value. This could result in for example an even 5 - 10 dB(A) better result.


Overview - reduction measurements

NoConstructionProductsWeighted reduction
1 A-15 steel deckShiprock Plus, 40 mmRw = 45 dB
2 A-15 steel bulkheadShiprock alu, 60 mmRw = 46 dB
3 A-30 steel bulkhead/deckMarine Batts 45, 50 mm/ 30 mmRw = 45 dB
4 A-60 steel bulkhead    Marine Wired Mat 105, 75 mm/ 30 mmRw = 56 dB
5 A-60 steel bulkhead    Marine Wired Mat 90, 2 x 45 mm/ 45mmRw = 49 dB
6 A-60 steel bulkheadMarine Firebatts 130, 2 x 30 mm/ 30 mmRw = 48 dB
7 A-60 steel bulkheadMarine Firebatts 100, 60 mm/ 25 mmRw = 45 dB
8 A-60 steel bulkheadMarine Firebatts 130, 65 mm/ Marine Wired Mat 105, 30 mmRw = 48 dB
9 A-60 steel bulkhead    Marine Firebatts 130, 2 x 30 mm/ 30 mm with 19 μ Rockwool Acoustic foil systemRw = 47 dB
10A-60 steel bulkheadMarine Wired Mat 90, 2 x 45 mm/ 45 mm with 1 mm steel sheetRw = 58 dB
11A-60 steel bulkheadMarine Firebatts 100, 60 mm/ 25 mm with glass cloth 200 g/m2 plus tapeRw = 45 dB
12A-60 steel bulkheadMarine Firebatts 100, 60 mm/ 25 mm with reinf. alufoilRw = 46 dB

13

A-60 steel bulkhead + thermalMarine Firebatts 130, 65 mm / Marine Wired Mat 105, 30 mm and Marine Batts 32, 50 mmRw = 49 dB
14A-60 steel bulkhead + thermalMarine Firebatts 130, 65 mm / Marine Wired Mat 105, 30 mm and Marine Batts 32 RL reinf. alu, 50 mmRw = 49 dB

15

A-60 bulkhead restrictedMarine Firebatts 100, 40 mm/ 40 mmRw = 47 dB
16A-60 steel deckMarine Firebatts 100, 40 mm/ 25 mmRw = 46 dB

17

A-60 steel deckMarine Wired Mat 90, 45 mmRw = 46 dB
18A-60 steel deckMarine Firebatts 130, 45 mm / Marine Wired Mat 105, 30 mmRw = 46 dB
19A-60 steel deckMarine Firebatts 130, 40 mm with 1mm steel sheetRw = 56 dB
20A-60 aluminium bulkheadMarine Firebatts 100, 2 x 30 mm/ 30 mm (on both sides)Rw = 40 dB

21

A-60 aluminium bulkhead restrictedMarine Firebatts 100, 2 x 30 mm/ 30 mmRw = 40 dB
22A-60 aluminium deckMarine Firebatts 100, 2 x 30 mm/ 30 mmRw = 40 dB
23A-60 bulkhead corrugatedMarine Firebatts 100, 60 mmRw = 40 dB
24A-60 bulkhead corrugatedMarine Firebatts 130, 2 x 30 mmRw = 40 dB
25H-60 bulkhead restrictedHC Firebatts 150, 30 mm and HC Wired Mat 150, 40 mm / 40 mmRw = 48 dB
26H-60 bulkhead restricted + thermalHC Firebatts 150, 30 mm and HC Wired Mat 150, 40 mm / 40 mm and 50 mm Marine Batts 32Rw = 50 dB
27H-60 bulkhead restricted + comfortHC Firebatts 150, 30 mm and HC Wired Mat 150, 40 mm / 40 mm and 50 mm Marine Batts 32 RL reinf. alu, 50 mmRw = 51 dB
28H-120 bulkhead restrictedHC Firebatts 150, 30 mm and HC Wired Mat 150, 40 mm / 2 x 40 mmRw = 49 dB
29H-60 steel deckHC Firebatts 150, 2 x 50 mm    Rw = 48 dB
30H-120 bulkhead corrugatedHC Firebatts 150, 50 mm and HC Wired Mat 150, 40 mmRw = 44 dB
31A-30 bulkhead with panelMarine Batts 45, 50/25 mm and 25 mm panelRw = 62 dB
32Acoustic solutionMarine Slab 80, 2 x 50 mm with 5-10 mm air gapRw = 49 dB

 
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