TEST REPORT - Ursa

LGAILGAI Technological Center, S.A.Campus de la UABApartado de Correos 18E - 08193 BELLATERRA (Barcelona)T +34 93 567 20 00F +34 93 567 20 01www.applus.com9/LE766Bellaterra: June 5 th , 2012File number: 12/5203-878Petitioner’s reference:URSA IBÉRICA AISLANTES, S.A.Paseo Recoletos, nº 328004 MadridTEST REPORTREQUESTED TEST:Measurement of the sound absorption in a reverberation roomin accordance with the standard UNE-EN ISO 354:2004 of asample of URSA Air Zero A2 mineral wool panels with 37 cmcavity.DATE OF TEST: May 25 th , 2012TEST CARRIED OUT BY: Xavier Roviralta (Acoustics Laboratory - LGAI Technological Center)Service Quality AssuranceXavier CostaManager of AcousticsLGAI Technological Center S.A.Applus+ guarantees that this work has been made in accordance with our Quality and Sustainability System, fulfilling thecontractual conditions and legal norms. Within our improvement program we would be grateful if you would send us anycommentary that you consider opportune, to the person in charge who signs this document, or to the Quality Manager of Applus+,in the following e-mail address: satisfaccion.cliente@appluscorp.comThe reproduction of the present document is only allowed if done it its entirely. Only reports with an original signature or certifiedcopies will have legal force. This document consists of 10 pages 0 of which are Appendixes. -page 1-LGAI Technological Center, S.A. inscrita en el Registro Mercantil de Barcelona, Tomo 35.803, Folio 1, Hoja nº B-266.627 Inscripción 1ª CIF A-63207492

File number: 12/5203-878 Page number: 21.- SCOPE OF THE TESTThe scope of this test is to determinate the sound absorption in accordance with the standardUNE-EN ISO 354:2004, of a sample of URSA Air Zero A2 25 mm thickness mineral wool panels,installed with a cavity of 37 cm.2.- MEASUREMENT EQUIPMENTThe equipment used in the test are the following:• Spectrum analyzer id. number: 103099 (Bruel&Kjaer mod. Pulse)• Microphone calibrator id. number: 103032 (Bruel&Kjaer mod. 4231)• Microphones id. numbers: 103123, 103126, 103128, 103131, 170093 and 170108(Bruel&Kjaer mod. 4943)• Sound sources id. numbers: 103098 (AVM mod. DO12) and 103124 (CESVA mod.BP012)• Noise generator with power amplifier id. number: 103125 (CESVA mod. AP600)• Equalizer id. number: 170092 (INTER mod. EQ-9231)• Thermo-hygrometer id. number: 103021 (Oregon Scientific mod. BA116)• Tape measurer id. number: 103095 (Stanley mod. Powerlock)3.- TEST PROCEDUREP3P2P4F2P5P6The test is carried out in accordance with LGAI TechnologicalCenter procedure C521 0198 based on the European standardUNE-EN ISO 354:2004, ‘Measurement of sound absorption in areverberation room’; reverberation times of the room with andwithout sample are compared. The evaluation and rating isdone in accordance with the European standard UNE-EN ISO11654:1998.F1 P1Around the sample 6 microphones positions (P1 to P6, in figure)and 2 sound sources (F1 and F2) positions are defined.Measurements are carried out exciting the room with pink noise and calculated from themeasured reverberation times as specified in part 5.3.

File number: 12/5203-878 Page number: 34.- TEST SPECIMEN DESCRIPTIONTest specimen has the commercial reference URSA Air Zero A2 and corresponds to mineralwool panels coated with an aluminium–glass fiber fabric on one face and with a black glass fiberfabric on the other face.URSA Air Zero A2 is a panel of 3000 x 1200 x 25 mm (length, width and thickness) with tongueand groove on the sides. Tested panels are provided by the petitioner and received by theAcoustics Laboratory on May 23 rd 2012.Images 1 and 2 URSA Air Zero A2 tested panelsImages 3 and 4 Tongue and groove on the sidesImage 5 Aluminium–glass fiber fabric on one face and black glass fiber fabric on the other

File number: 12/5203-878 Page number: 4Test specimen consists of 3 URSA Air Zero A2 panels, forming a rectangle of 3515 x 3000 mm,which means a test area of 10,55 m². The panels are placed inside the reverberation room withthe face coated with black glass fiber fabric side up, mounted on a metal studs structure. Thecavity under the panels is 37 cm.The perimeter edge of the test specimen is covered with an acoustically reflective frame made ofmedium density wooden boards (DM), in order to prevent the edges from absorbing sound andtake into account only the upper face of test specimen.Images 6 to 8 Installation of test specimen into the reverberation roomImage 9 Sample ready to be tested

File number: 12/5203-878 Page number: 55.- DEFINITIONS AND CLASSIFICATION5.1. Reverberation time. Time, in seconds, that would be required for the sound pressurelevel to decrease by 60 dB after the sound source has stopped.5.2. Equivalent sound absorption area of a room. Hypothetical area of a totally absorbingsurface without diffraction effects which, if it were the only absorbing element in the room,would give the same reverberation time as the room under consideration.5.3. Equivalent sound absorption area of the test specimen, A T . Difference between theequivalent sound absorption area of the reverberation room with and without the test specimen.To calculate this parameter the average reverberation time in the reverberation room ismeasured with and without the test specimen. From these reverberation times the equivalentsound absorption area, A T , shall be calculated using the Sabine formula:⎛ 1= A2− A1= 55.3 V⎜⎝ c 2T21- 4 V (mc T ⎟ ⎞−1 1 ⎠- mAT2 1where:• c 1 and c 2 are the propagation speed of sound in air temperatures t 1 and t 2 ,• V is the volume, in cubic metres, of the empty reverberation room,• T 1 is the reverberation time, in seconds, of the empty reverberation room,• T 2 is the reverberation time, in seconds, of the empty reverberation room after the testspecimen has been introduced,• m 1 and m 2 are the power attenuation coefficients, in reciprocal metres, of the emptyreverberation room and with the test specimen, respectively. The value of m iscalculated according to the International Standard ISO 9613-1 using the climaticconditions that have been present during the measurement.)The value of m can be calculated from the attenuation coefficient, α, which is used inInternational Standard ISO 9613-1 in accordance with the formula:αm =10 log (e)

File number: 12/5203-878 Page number: 65.4. Sound Absorption Coefficient. The sound absorption coefficient, α s , of a plane absorber(or an array of identical objects), shall be calculated using the formula:where:α S =A TS• A T is the equivalent sound absorption area of the test specimen, in square meters,• S is the area, in square meters, of the test specimen.For discrete absorbers, the result should be expressed as equivalent sound absorption area perobject, which is determined by dividing A T by the number of objects tested, n:Aobj =ATnFor a specified array of objects, the result should be given as equivalent sound absorption areaof the whole configuration.5.5. Practical sound absorption coefficient, α p . Value of sound absorption coefficientdepending of frequency, based upon measurements of sound absorption according standard ISO354, and calculated using the formula:where:αpiα=i 1+ αi 23+ αi 3• α pi is the practical sound absorption coefficient for the i th octave band,• α i1, α i2 and α i3, are the sound absorption coefficients of the corresponding third-octaveband within the i th octave band.Values are given with 2 decimal and rounded in steps of 0,05 until a maximum value of α pi =1,00 in case of rounded average values > 1,00.

File number: 12/5203-878 Page number: 75.6. Weighted sound absorption coefficient, α W . Single-number defined as the value ofthe reference curve, at the frequency of 500 Hz, after shifting it according to the method laiddown.To evaluate the results of a measurement, the reference curve is shifted in steps of 0,05 towardsthe curve of practical sound absorption, α p , until the sum of the unfavourable deviations is aslarge as possible but no more than 0,10. An unfavourable deviation at a particular frequencyoccurs when the result of measurement is less than the reference curve.The set of reference values used for comparison with measurement results (reference curve) isspecified in table below:1.2Frequency (Hz)Reference curvevalue250 0.80500 1.001000 1.002000 1.004000 0.90Curva de referencia10.80.60.40.20125 250 500 1000 2000 4000Frequency, Frecuencia, Hz Hz5.7. Shape indicators, L. M. H. If a practical sound absorption coefficient, α pi , exceeds theshifted reference curve value on 0,25 or more, a shape indicator will be added.When excess happens at 250 Hz, indicator L is used. For 500 and 1000 Hz octave bands,indicator M is used. For 2000 Hz and 4000 Hz octave bands, indicator H is used.5.8. Sound Absorption Classes. Sound Absorption classes A to E are another classificationmethod described in the International Standard ISO 11654 and it is used in wide bandapplications. The single-number, α W , is compared with values given in the table below:

File number: 12/5203-878 Page number: 8Sound absorption classα WA 0.90; 0.95; 1.00B 0.80; 0.85C 0.60; 0.65; 0.70; 0.75D 0.30; 0.35; 0.40; 0.45; 0.50; 0.55E 0.15; 0.20; 0.25Not classified 0.00; 0.05; 0.106.- TEST CONDITIONSReverberation room characteristicsShape:Parallelepiped Total area (A T ): 238,2 m 2Volume (V): 243,6 m 3 Size of diffuser: 1,5 m 2Dimensions: 7,84 × 4,96 × 6,27 m Number of diffusers: 14Environmental conditions of reverberation roomRoom state: Empty With test specimenTemperature:Relative humidity:Air pressure:22,3 ºC49 %1002 hPa22,2 ºC49 %1002 hPa7.- UNCERTAINTY OF RESULTSThe uncertainty associated to the test has been calculated and it is available to the petitioner.

File number: 12/5203-878 Page number: 98.- REVERBERATION TIMES AND EQUIVALENT SOUND ABSORPTION AREAIn following tables the reverberation time values of the test room with and without the testspecimen are given, as well as the calculated equivalent sound absorption areas.Frequency(Hz)Reverberation timeof the empty room,T 1 (s)Reverberation timeof the room with thetest specimen, T 2 (s)Equivalent soundabsorption area, A T(m²)100 14,41 6,21 3,58125 11,97 5,36 4,03160 10,60 4,82 4,42200 11,93 4,83 4,82250 12,56 4,60 5,39315 11,35 3,93 6,51400 10,57 3,45 7,64500 10,30 3,46 7,52630 9,47 3,27 7,85800 8,88 2,93 8,951000 8,45 2,64 10,171250 7,51 2,50 10,461600 6,54 2,31 10,942000 5,72 2,15 11,402500 4,92 2,01 11,483150 4,18 1,88 11,474000 3,22 1,68 11,125000 2,51 1,48 10,83

File number: 12/5203-878 Page number: 109.- RESULTSSound absorption in accordance with UNE-EN ISO 354:20049/LE766URSA IBÉRICA AISLANTES, S.A.Sound abs. coefficient, α STest specimen: Freq. (Hz) α sURSA Air Zero A2, 25 mm mineralwool panels coated with an aluminium–glass fiber fabric on one face and with ablack glass fiber fabric on the other face.Tested with 37 cm cavity1,21,110,90,80,70,60,50,40,30,2100125160200100 0,34125 0,38160 0,42200 0,46Sound absorption coefficient, α S250 0,5125031540050063080010001250160020002500315040005000Hz315 0,62400 0,72500 0,71630 0,74800 0,851000 0,961250 0,991600 1,042000 1,082500 1,093150 1,094000 1,055000 1,03Practical sound absorption coefficient, α p1,21,110,90,80,70,60,50,4Sound abs. coef.0,3Ref. shifted.0,2Hz125 250 500 1000 2000 4000Practical soundabsorption coef., α pFreq. (Hz)α p125 0,40250 0,55500 0,751000 0,952000 1,004000 1,00Weighted sound absorption coefficient, α W = 0,80 (H)Sound absorption class: BIt is highly recommended to use the single number "weighted sound absorption coefficient (α w )" together withfrequency-dependent values of sound absorption coefficient.The results reported in this document relate only to the sample, product or item delivered to LGAI Technological Center theappointed day having been tested under the conditions established in this document.