Rockwool offers two dedicated and approved floating floor constructions for fire protection Class A-60 Deck. These solutions are often used in areas where noise reduction is also required. As mentioned earlier the principle of a floating floor is an exceptional good solution to break structure borne noise from either isolating the sound source placed on the fl oating fl oor or highly reduce transmitted noise from the compartment below and adjacent.
The Rockwool Marine Slab 140 is used for normal accomodation load flooring system, but the material is designed for highest absorption of noise and vibrations. The Rockwool Marine Slab 200 is aimed for general purpose with normal to high load capacity.
Please see the Rockwool Technical guideline TG 10.20, on our web-site www.rockwool-marine.com
As described in the theory section, the dynamic stiffness of the core material for the flooring system is very important, and should in principle be as low as possible. But as the fl ooring system has to carry load, it is equally important to have a material which is dimensional stabile and has a compression strength high enough. Rockwool Marine Slab 140 will supply the perfect distribution of these requirements, and in addition it is possible to create fi re division systems (A-60 Deck).
The research and development of the Rockwool material have made it possible to create floating floor solutions with different approaches as main target. The production methods of the material can make it possible to suit the desired parameters requested.
The Rockwool Marine Slab 200 has been designed to focus on fire and sound properties, but with first priority to ensure the load capabilities of the flooring system.
The Rockwool Marine Slab 140 has been designed with focus on the dynamic stiffness, i.e. best possible noise reduction, but still it has been possible to create a flooring system for normal accommodation load and an A-60 fire division solution.
The fibre built-up and production methods of these two materials are actually quite different.
When a floating floor is made it is very important that the top layer has no ridged connection with the steel structure.
As example validation Ødegaard Danneskiold & Samsøe has performed measurements of dynamic stiffness.
Abstract of the results:
With a preload of 3.18 kN/m2 the following has been measured.
Rockwool Marine Slab 140, 50 mm: 5.4 MN/m3
Rockwool Marine Slab 200, 2 x 30 mm: 7.1 MN/m3
Rockwool Marine Slab 160, 50 mm: 13.0 MN/m3
It is seen that the reference measurement of Rockwool Marina Slab 160 (OEM product), which is a material designed and targeted mainly for marine panel productions, has a higher value.
Low value of dynamic stiffness is good for the noise reduction.
Rockwool Marine & Offshore is preferred supplier for many dedicated marine flooring companies.
These companies then create more sophisticated solutions for superb noise reduction in both high and low frequencies.
PK/90 Steel - Litosilo Steel
By Sika Cufadan
A60 approved with 30 + 40 mm Rockwool insulation
Total building height: 78mm
Weight: 60.4 kgs/m2
Screeding prior to application of carpet or vinyl
Best solution for noise reduction and dampening of structure borne noise
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