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A problem of frequent
occurrence concerning clinker and slab floors is the
impact sound reduction. If no extra measures are taken the beam and slab floor
will retain its high impact sound level. At the project planning stage it is
possible to dimension constructions at an early stage to achieve the desired
reduction, but very often people will have to deal with decisions arrived at
late in the process or one faces rebuilding/repairs where addition to the
height of the floor is a problem. |
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During the last years we have taken a closer look at our tried and trusted
construction with screeding alt. floor gypsum that is floating on the
DECIBEL3 mat. We did it in order to investigate if it was possible to develop
the construction further. Now, we can introduce the construction above that
is based on the same principle with a high density on top of the DECIBEL1 mat.
Through this we can create good conditions for an improvement of the reduction
of the impact sound. We have named the construction SoundSeal. Naturally,
the acoustic reading improvements of the construction are better the heavier
the trowelling applied is, and it is also true that there is further improvement
when the DECIBEL1 mat is exchanged for the DECIBEL3 mat. In this case the
DECIBEL1 mat is installed unfixed on the subconstruction with a plastic film
inbetween. The DECIBEL mat is layed with turn ups along the walls and the joints
are taped. On this surface a ≥20 mm's reinforced trowelling (of extra high elasticity*)
is put. On this surface an optional clinker could be installed with fixation in a traditional
way. |
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When installing a slab floor the construction may need to be redimensioned depending
on the slab type and method of application (e.g. dry mix may be used when needed). |
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Revised information.
*The minimum thickness of the trowelling and choise of welded fabric
net variate depending on the fabricate and the area of the surface.
Contact the supplier for more information. |
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Impact Sound |
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Readings from a standard beam and slab floor show a considerable improvement
in reduction of impact sound. Naturally, better readings will be the outcome if
DECIBEL3 is used but this requires thicker trowelling for constructional
reasons. The following numbers are hinting at different impact sound indice
(∆Līn,w) for the construction with different trowelling thicknesses on
DECIBEL1. The results are based on an installed 10 mm's clinker. The floor
structure is a beam and slab floor. |
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DECIBEL1 and Trowelling thicknes
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Index of Impact Sound
Improvement
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DECIBEL1 +20 mm's
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∆L'n,w =
15 dB |
DECIBEL1 +25 mm's
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∆L'n,w =
16 dB |
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If the thickness of the trowelling reaches 30 mm's a normal standard product
may be used (cement or gypsum based) if it is reinforced. Furthermore, it is recommended that DECIBEL1
is exchanged for DECIBEL3 in order to achieve a better acoustic result.
For more information, please consult the information on the SoundSeal construction under DECIBEL3. |
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For customized calculations on optional constructions we refer to the calculation programme
BASTIAN,
where the paramaters for different constructions are in the database. If you do not have access to
this programme, please contact us so we may help you performing the desired calculations. |
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COMFORT |
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Vinyl and linoleum floors are widely used in places where one wishes an easily
cared for and durable floor at a reasonable cost. The floor type is not a general solution to all
problems, though. Apart from certain acoustic limitations, which we have informed about earlier,
these kinds of floors offer a relatively poor comfort. The open market offers the two types of
floor with a "foam" back that will give better acoustics and enhanced comfort, but not
at the
level we can offer with DECIBEL1. |
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The combination of high density, reinforced back and the extreme elasticity of the rubber material
in the DECIBEL1 mat will lead to the fact that the comfort may be enhanced in solid vinyl and linoleum floors.
This was not possible before because of the indentation requirement. |
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To read about the test results of this kind with DECIBEL1, please consult the technical
specifications. In the cases where we install DECIBEL1 under parquet a considerable improvement in comfort
is experienced compared with a parquet that is glued on the concrete subconstruction, which may feel
inelastic and give a sense of fatigue. |
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Personal
Estimation |
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Often, it is difficult to relate a specific test value to how that will be experienced
in real life. In some cases a theoretically good result may be experienced as a marginal improvement and vice versa.
Finally, it is always the actual experience that counts. The test result we use for our account of Personal Estimation
are the references we have created over the years with DECIBEL1. |
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Summary: |
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DECIBEL1 will give hard flooring completely new
characteristics when speaking of acoustical comfort as well as pedestrian comfort. The acoustic strength is
primarily focused on improvement of impact sound and drum sound. |
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