SOLID HARDWOOD FLOORING
SPECIFIER'S INFORMATION

SOUND - SPECIFIER'S INFORMATION
Commercial / Residential / Sport

E 5.1

 

E 5.1

 


ACOUSTICS IN FLOOR CONSTRUCTIONS

E 5.0

General information

E 5.1

Specifier's Information

Fig. 1

INTRODUCTION

This Specifier's Information describes guiding 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.​


 

REGULATORY REQUIREMENTS

In multi unit housing, hotels, dormitories, nursing homes, etc. national building regulations normally require a certain step sound insulation level between horizontal divisions.

For guiding step-sound reduction values for a selected number of Junckers floor systems, see the section about Step sound reduction.

STEP-SOUND REDUCTION - RECOMMENDED VALUES

Here you find guiding step sound reduction values, when installing a Junckers floor system in residential, commercial and sports areas, laid on heavy constructed horizontal divisions.

Floor systems for residential and commercial areas:
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


ABSORPTION COEFFICIENTS - ESTABLISHING REVERBERATION TIME

TABLE 1

Frequency, 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

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