SOLID HARDWOOD FLOORING
SPECIFIER'S INFORMATION

Acoustic in floor constructions
Commercial / Residential / Sport 

E 5.1

 

E 5.1

 


INTRODUCTION

The Specifier's Information describes recommended values for step sound reduction and absorption coefficients for a wide range of Junckers flooring systems.

For general information on sound and practical guidelines on acoustics in floor constructions with Junckers solid hardwood flooring see E 5.0.

Furthermore, reference made to Junckers floor systems see C 1.0 and D 1.0.

 

ACOUSTICS IN FLOOR CONSTRUCTIONS

E 5.0 General information

E 5.1 Specifier's Information

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STEP-SOUND REDUCTION - RECOMMENDED VALUES

Floor systems for residential and commercial applications
22 / 20.5 mm clip system on JunckersFoam or PolyFoam: 16 dB
22 / 20.5 mm clip system on cardboard wool felt, 500 g/m2: 15 dB
14 / 15 mm clip system on JunckersFoam or PolyFoam: 17 dB
14 / 15 mm clip system on cardboard wool felt, 500 g/m2: 16 dB
22 / 20.5 mm batten system on 39 x 40 mm battens with Junckers DuoWedges and Step Sound Reduction Pad: 19 dB
22 / 20.5 mm batten system on 63 x 40 mm battens with Junckers DuoWedges and Step Sound Reduction Pad: 20 dB
14 / 15 / 20.5 / 22 mm Glue Down System: 9 dB

Sports floors
22 mm clip sports system on 10 mm SportsFoam underlay: 17 dB
22 mm clip sports system on 5 mm SportsFoam underlay: 15 dB
22 mm DuoBat 120+ double layer sports batten system and 50 mm insulation: 25 dB
22 mm DuoBat 120+ double layer sports batten system: 25 dB
22 mm UnoBat 62+ single layer sports batten system: 21 dB
22 mm UnoBat 45 single layer sports batten system: 18 dB
22 mm Blubat 67 single layer sports batten system: 17 dB 


 

STATUTORY REQUIREMENTS

In multi story residential buildings, hotels, student hostels, residential care homes, etc. national building regulations normally require a certain step-sound level between dividing floors in two units.

Reference is made to national building regulations.

For recommended step-sound reduction values for selected Junckers floor systems: See Table 1.

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ABSORPTION COEFFICIENTS

Table 2 Frekvens, Hz
Absorption coefficients for selected floor systems 125 250 500 1000 2000 4000
22 / 20,5 mm batten system with soft packing on concrete 0.15 0.11 0.10 0.07 0.06 0.07
22 / 20,5 mm clip system with PolyFoam on concrete 0.02 0.19 0.04 0.02 0.04 0.05
14 mm clip system with PolyFoam on concrete 0.01 0.13 0.07 0.02 0.03 0.01

 

REVERBERATION TIME

Table 2 shows recommended absorption coefficients in the frequency range 125- 4,000 Hz for selected floor systems. For calculation of reverberation time.

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