Test Report. No dated 29 th January Airborne Sound Insulation of Folding-Sliding-System SF 75H in Laboratory

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1 Test Report No dated 29 th January 2014 Airborne Sound Insulation of Folding-Sliding-System SF 75H in Laboratory Client: SUNFLEX Aluminium Systeme GmbH Im Ruttenberge Wenden Test Object: Folding-Sliding-System Make Sunflex, Type SF 75H Contract: Ascertainment of Airborne Sound Insulation according to DIN EN ISO in Laboratory Author: Dipl.-Ing. Stefan Grüll Mülheim an der Ruhr This report comprises of 7 pages and 13 annexes. Duplication is only permissible when carried out unabridged and with prior consent of the issuer.

2 Test Report , /sg-gm CONTENTS Page Annex 1. Definition of Project and General Details Definition of project Manufacturer of test arrangement Client requesting tests Measurement standards 4 2. Set-up of Test Object and Test Arrangement Laboratory Set-up of test object 6 3. Measurement and Execution of Measuring 7 4. Measurement Results 7 5. Annexes Manufacturer s production drawings 1-6 Construction characteristics of glazing 7 Photo documentation 8-9 Schematic diagram of laboratory 10 Airborne sound measurement according to DIN EN ISO Measurement results Page 2 of 7

3 Test Report , /sg-gm 1. Definition of Project and General Details 1.1 Definition of project SUNFLEX Aluminium Systeme GmbH, Wenden, manufactures and sells (among others) folding-sliding-systems which can be used as partitions in the interior of buildings but also can for closing off heated living quarters from the outside area. The system to be tested, type SF 75H, is a glass folding wall consisting of 3-layered laminated timber in which different insulating glass units up to a thickness of 40 mm can be fitted. The three-winged wall is equipped with ceiling and floor rails integrated in the system and has vertical seals at the wing joints as well as horizontal seals above and below on the ceiling and floor rails. The system SF 75H was installed in the test stand and tested with respect to the airborne sound insulation. For this purpose, the construction has to be installed in the test opening with dimensions width x height = 2,400 mm x 2,200 mm in the test stand with suppressed flanking transmission in accordance to DIN EN ISO The airborne sound insulation in a functional state of the test object manufactured by the client in accordance to DIN EN ISO was to be ascertained. 1.2 Manufacturer of test arrangement SUNFLEX Aluminium Systeme GmbH Im Ruttenberge Wenden 1.3 Client requesting test SUNFLEX Aluminium Systeme GmbH Im Ruttenberge Wenden Page 3 of 7

4 Test Report , /sg-gm 1.4 Measuring standards Measurement was carried out in accordance with the following standards and guidelines: DIN EN ISO Acoustics Laboratory measurement of sound insulation of building elements Part 1: Application rules for specific products (ISO :2010); German Version EN ISO :2010 DIN EN ISO Acoustics Laboratory measurement of sound insulation of building elements Part 2: Measurement of airborne sound insulation (ISO :2010); German Version EN ISO :2010 DIN EN ISO Acoustics Laboratory measurement of sound insulation of building elements Part 4: Measuring procedures and requirements (ISO :2010); German Version EN ISO :2010 DIN EN ISO Acoustics Laboratory measurement of sound insulation of building elements Part 5: Requirements for test facilities and equipment (ISO :2010); German Version EN ISO :2010 DIN EN ISO Acoustics Rating of sound insulation in buildings and of building elements Part 1: Airborne sound insulation (ISO 717-1: AM1:2006) ; German Version EN ISO 717-1:1996 +A1:2006 Page 4 of 7

5 Test Report , /sg-gm 2. Set-up of Test Objects and Test Arrangements 2.1 Laboratory The sample element was installed in the test stand belonging to the test institute by the manufacturer s fitters in order to ascertain the airborne sound insulation with suppressed flanking transmission in accordance to DIN EN ISO The maximum sound reduction index R`max of the test stand when a type A wall (lightweight wall) was installed in accordance to DIN EN ISO , Appendix A amounted to: f Terz in Hz R`max in db 29,2 40,8 34,6 44,1 44,3 49,6 55,7 59,6 61,6 63,8 68,1 f Terz in Hz R`max in db 70,6 72,0 75,1 74,6 73,2 73,3 78, ,2 90,5 The rated sound reduction index amounted to: R`w, max = 68 db. The enclosing wall of the folding-sliding-system was manufactured by skilled test institute employees. In order to achieve an adequately high level of sound insulation, the wall panels of the altogether approx. d (= thickness) = 500 mm thick wall were built up on both sides of the butt joint with freestanding metal stands. Page 5 of 7

6 Test Report , /sg-gm 2.2 Set-up of test object The tested sample element was an folding-sliding-system in timber composite construction made of sections having a thickness of 75 mm with floor and ceiling rails as well as door stops and 3 wings equipped with insulating glazing units (2 different types). The foldingsliding-wings which are connected with one another are moved through a roller carriage system which is adjustable in height in a ceiling rail and/or floor rail. The connection to the side wall connection is carried out with a vertical connection profile. The dimensions of the total element amount to width x height = 2,400 mm x 2,200 mm. The test surface amounts to approx. S = 5.28 m 2. The glazing units have the following construction characteristics: Build-up (according to sticker on glass): VSG SI 8 mm Cavity between inner and outer pane (SZR) 16 mm (Argon) LE Premium 6 mm Build-up (according to sticker on glass): Float 4 mm Cavity between inner and outer pane (SZR) 20 mm (Argon) LE Premium 4 mm The following build-ups were tested: Measurement 1: Folding-sliding-system SF 75H, Glazing (build-up 1): VSG SI 8 mm, SZR 16 mm (Argon), LE Premium 6 mm Measurement 2: Folding-sliding-system SF 75H, Glazing (build-up 2): Float 4 mm, SZR 20 mm (Argon), LE Premium 4 mm The surrounding joints between test object and test opening were sealed using silicon compound or with durable elastic filling mass respectively. The detailed build-up of the construction can be seen in the manufacturer s construction drawing, annexes 1 to 6. Annex 7 shows the construction characteristics of the glazing units (stickers on glass). Annexes 8 and 9 contain photo documentation of the set-up in the laboratory. A schematic diagram of the test set-up in the test stand is shown in annex 10. Page 6 of 7

7 Test Report , /sg-gm 3. Measurement and Execution of Measuring The measurement of the rated sound reduction index R w in db of the folding-sliding-system was carried out in accordance with the requirements of the standard DIN EN ISO Laboratory measurement of sound insulation of building elements Part 2: Measurement of airborne sound insulation The measurement set-up as well as a description of measuring can be seen in annex 11 of this test report. 4. Measurement Results The rated sound reduction index of the setup tested on 23 rd January 2014, installed in functional condition, without any influence from flanking structures was determined as follows: Measurement 1 2 Test Object Folding-sliding-system SF 75H, Glazing: VSG SI 8 mm, SZR 16 mm (Argon), LE Premium 6 mm Build-up see section 2.2 and annexes 1 to 9 Folding-sliding-system SF 75H, Glazing: Float 4 mm, SZR 20 mm (Argon), LE Premium 4 mm Build-up see section 2.2 and annexes 1 to 9 Rated sound reduction index R w in db The frequency dependent curve progress of the sound insulation measurement can be seen in annexes 12 and 13. The measuring results constitute test stand values; a safety margin of 2 db should be taken into account for planning applications. Mülheim an der Ruhr, 29 th January 2014 Stefan Grüll Page 7 of 7

8 Client s Drawing Annex Mülheim an der Ruhr, den Stefan Grüll

14 Construction Characteristics of Glazing Annex 7 Measurement 1: Copy of sticker on glass Measurement 2: Copy of sticker on glass Mülheim an der Ruhr, Stefan Grüll

15 Photo Documentation Annex 8 Photo 1: Folding-Sliding-System SF 75H, View Transmission Room Photo 2: Folding-Sliding-System SF 75H, View Transmission Room, Detail Connection Ceiling Mülheim an der Ruhr, den Stefan Grüll

16 Photo 3: Folding-Sliding-System SF 75H, View Receiving Room Photo Documentation Annex 9 Photo 4: Folding-Sliding-System SF 75H, View Receiving Room, Detail Connection Floor Mülheim an der Ruhr, den Stefan Grüll

17 Schematic Diagram of Laboratory Annex 10 Schematic Diagram Ground view Vertical Cross-Section Transmission Room Test Opening Receiving Room Transmission Room Receiving Room Structures: Ceiling - Reinforced concrete ceiling d = 14 cm, coated with latex paint on the room side, Site-specific mass m F = 322 kg/m 2 Floor - Reinforced concrete plate d = 20 cm, straightened, Site-specific mass m F = 460 kg/m 2 Walls - Masonry d = 24 cm, site-specific mass m F = 384 kg/m 2 Ambient Air: Ambient air conditions during the measuement on 23 rd January Air temperature T L = 18.3 C - Relative air humidity F = 52.4% Room Conditions Receiving Room Transmission Room Width [m] 4,10 4,70 4,70 5,32 Length [m] 4,48 4,38 Height [m] 3,76 3,76 Volume V [m 3 ] 74,5 81,5 Reverberation time T m [s] 1,34 1, Mülheim an der Ruhr, den Stefan Grüll

18 Airborne Sound Insulation according to DIN EN ISO in Laboratory Annex 11 Description of the Execution of an Airborne Sound Measurement, Evaluated by Measuring Equipment with Process Computer Client: Object: SUNFLEX Aluminium Systeme GmbH, Im Ruttenberge 12, Wenden Accordion Partition System Make Sunflex, Type SF 75H 1. Measuring Set-up Transmission Room Receiving Room Device Designation / Type Serial Number Date of Last Check / Calibrated until Last Calibration 1 Dodecahedron loudspeaker for streaming third octave band noise DL /- - 2 Dodecahedron-loudspeaker for streaming third octave band noise DL Condenser microphone: M1: Norsonic, Type 1220 V1: Norsonic, Type 1201 M2: Norsonic, Type 1225 V2: Norsonic, Type / / / / Sound level analyser: Norsonic, Type / Measurement Implementation For the determination of the airborne sound insulation, electroacoustic generated third octave band noise is radiated in the transmission room via a dodecahedron loudspeaker. In the frequency range between 50 Hz and Hz the margin values generated, are simultaneously measured and recorded in two channels in the transmission and receiving room, via two condenser microphones in third octave band steps. From these values and the rev. time, the sound insulation margins, in the individual frequency bands, are determined according to DIN EN ISO 717. The rated sound reduction index R w is determined as an individual value, with the integrated process computer of the sound level analyzer Mülheim an der Ruhr, den Stefan Grüll

19 Sound Reduction Index R db Airborne Sound Measurement according to DIN EN ISO Ascertainment of Airborne Sound Insulation of Building Elements in Laboratory Manufacturer: SUNFLEX Aluminium Systeme GmbH Name of Product: Client: SUNFLEX Aluminium Systeme GmbH Test Rooms: Test object installed by: Client Test Date: Annex 12 System SF 75H Laboratory Description of Test Object: Measurement 1 Folding-Sliding-System, Make SUNFLEX, Type SF 75H, Glass-Folding-Wall made of 3 layered laminated timber, Profile Thickness d = 75 mm, 3-winged construction with ceiling and floor rails as well as side seals, insulating glazing units (according to stickers on glazing) VSG SI 8 mm, SZR 16 mm, LE Premium 6 mm, installed in opening width x height = 2,400 mm x 2,200 mm, S = 5,28 m² Construction: Build-up see section 2.2 as well as annexes 1 to 6 of the test report Frequency range corresponding to the curve of the reference data (ISO 717-1) Surface S test object: 5,28 m² Mass per unit area: Air temp. in test rooms: 18,3 C Air humidity in test rooms: 52,4 % Volume transmission room: 81,5 m³ Volume receiving room: 74,5 m³ Reference curve Frequency R Terz Hz db 50 27, , , , , , , , , , , , , , , , , , , , , shifted reference curve Frequency f Measuring curve Hz Evaluation according to ISO 717-1: R w (C;Ctr) = 42 (-1;-3) db C = -3 db C = -2 db C = -2 db The ascertainment is based on test stand measuring results, C tr = -9 db C tr = -9 db C tr = which were measured in 1/3 octave bands -7 db Test Resport No.: Mainstrasse Mülheim an der Ruhr, den Stefan Grüll

20 Sound Reduction Index R db Airborne Sound Measurement according to DIN EN ISO Ascertainment of Airborne Sound Insulation of Construction Parts in the Test Stand Manufacturer: SUNFLEX Aluminium Systeme GmbH Name of product: Client: SUNFLEX Aluminium Systeme GmbH Test rooms: Test object installed by: Client Test date: Annex 13 System SF 75H Laboratory Description of test object: Measurement 2 Folding-Sliding-System, Make SUNFLEX, Type SF 75H, Glass-Folding-Wall made of 3 layered laminated timber, Profile Thickness d = 75 mm, 3-winged construction with ceiling and floor rails as well as side seals, insulating glazing units (according to stickers on glazing) Float 4 mm, SZR 20 mm, LE Premium 4 mm, installed in opening width x height = mm x mm, S = 5,28 m² Construction: Build-up see section 2.2 as well as annexes 1 to 6 of the test report Frequency range corresponding to the curve of the reference data (ISO 717-1) Surface S test object: 5,28 m² Mass per unit area: Air temp. in test rooms: 18,3 C Air humidity in test rooms: 52,4 % Volume transmission room: 81,5 m³ Volume receiving room: 74,5 m³ Reference curve Frequency R Terz Hz db 50 21, , , , , , , , , , , , , , , , , , , , , shifted reference curve Frequency f Measuring curve Hz Evaluation according to ISO 717-1: R w (C;Ctr) = 35 (-1;-3) db C = -1 db C = 0 db C = 0 db The ascertainment is based on test stand measuring results, C tr = -6 db C tr = -6 db C tr = which are measured in 1/3 octave bands. -4 db Test Report No. : Mainstrasse Mülheim an der Ruhr, den Stefan Grüll