SIST-TP CEN/TR 15226:2025
(Main)Building products - Treatment of acoustics in product technical specifications
Building products - Treatment of acoustics in product technical specifications
This document specifies the method for declaring the technical classification relating to acoustics for a Product Standard including DoP, or European assessment document (EAD) including European Technical Approval (ETA) for a specific building product or equipment, or a family of building products or equipment. In particular, it gives advice on how to write technical specifications in response to the mandated characteristics on acoustics under the Construction Products Regulation.
NOTE 1 In the remainder of this document, the terms used relate to CEN and product standards. The concepts are, however, equally applicable to the European Organisation for Technical Approvals (EOTA).
The purpose of this document is to assist the Technical Committees in preparing acoustic clauses to ensure that such product standards:
- are as homogeneous as possible, with each individual product standard having the same basic structure;
- are in full accordance with the standards for the measurement and declaration of acoustic properties;
- reflect the latest technical knowledge of methods of determining the acoustical properties from the specific family of building products or equipment under consideration.
NOTE 2 Annex A lists the European and International Standards to be used in the drafting of acoustic provisions standards. Annex B contains guidance on choosing appropriate properties. Annex C describes the relevant measured acoustic properties for common products.
Bauprodukte - Behandlung der Akustik in technischen Produktspezifikationen
Produits de construction - Traitement de l’acoustique dans les spécifications techniques produits
Gradbeni proizvodi - Opredlitev akustičnih lastnosti v tehničnih specifikacijah proizvodov
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2025
Nadomešča:
SIST-TP CEN/TR 15226:2006
Gradbeni proizvodi - Opredlitev akustičnih lastnosti v tehničnih specifikacijah
proizvodov
Building products - Treatment of acoustics in product technical specifications
Bauprodukte - Behandlung der Akustik in technischen Produktspezifikationen
Produits de construction - Traitement de l’acoustique dans les spécifications techniques
produits
Ta slovenski standard je istoveten z: CEN/TR 15226:2025
ICS:
01.110 Tehnična dokumentacija za Technical product
izdelke documentation
91.120.20 Akustika v stavbah. Zvočna Acoustics in building. Sound
izolacija insulation
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
CEN/TR 15226
TECHNICAL REPORT
RAPPORT TECHNIQUE
October 2025
TECHNISCHER REPORT
ICS 11.020; 03.120.10 Supersedes CEN/TR 15226:2006
English Version
Building products - Treatment of acoustics in product
technical specifications
Produits de construction - Traitement de l'acoustique Bauprodukte - Behandlung der Akustik in technischen
dans les spécifications techniques produits Produktspezifikationen
This Technical Report was approved by CEN on 8 September 2025. It has been drawn up by the Technical Committee CEN/TC
126.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 15226:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Guidance for the contents of a product standard . 15
4.1 General. 15
4.2 Declaration of acoustic properties . 16
4.3 Mounting and operating conditions for laboratory testing . 18
4.4 Mounting and operating conditions for field testing . 19
4.5 Selection of acoustic standards . 19
4.5.1 General. 19
4.5.2 Standards used for the measurement of acoustic properties . 19
4.5.3 Standards used for the estimation of acoustic properties . 19
4.6 Recorded Information . 20
4.7 Information included in the test report. 20
4.8 Uncertainty of declared values . 20
4.8.1 General. 20
4.8.2 Standardized values . 20
4.8.3 Laboratory values . 20
4.8.4 Tabulated values . 21
4.8.5 Estimated values . 21
5 Extension rules for the declaration of acoustic properties . 21
5.1 General. 21
5.2 Direct field of application of test results . 22
5.2.1 General. 22
5.2.2 Application rules for different acoustic parameters . 22
5.3 Extended field of application of test results . 23
5.3.1 General. 23
5.3.2 Interpolation rules . 24
Annex A (informative) Standards related to acoustic properties . 25
Annex B (informative) Choosing appropriate properties . 28
Annex C (informative) Relevant measured acoustic properties for some common products . 30
Annex D (informative) Examples of rules for direct and extended application of test results 39
Bibliography . 40
European foreword
This document (CEN/TR 15226:2025) has been prepared by Technical Committee CEN/TC 126 “Acoustic
properties of building elements and of buildings”, the secretariat of which is held by AFNOR.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes CEN/TR 15226:2006.
In comparison with the previous version, this revision has mainly been focused on:
— updating the normative references (Clause 2) and adding an Annex listing the standards related to
relevant acoustic properties;
— reviewing the acoustic terms and definitions (Clause 3);
— reviewing Annex on relevant measured acoustic properties for some common products.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
1 Scope
This document specifies the method for declaring the technical classification relating to acoustics for a
Product Standard including DoP, or European assessment document (EAD) including European Technical
Approval (ETA) for a specific building product or equipment, or a family of building products or
equipment. In particular, it gives advice on how to write technical specifications in response to the
mandated characteristics on acoustics under the Construction Products Regulation.
NOTE 1 In the remainder of this document, the terms used relate to CEN and product standards. The concepts
are, however, equally applicable to the European Organisation for Technical Approvals (EOTA).
The purpose of this document is to assist the Technical Committees in preparing acoustic clauses to
ensure that such product standards:
— are as homogeneous as possible, with each individual product standard having the same basic
structure;
— are in full accordance with the standards for the measurement and declaration of acoustic properties;
— reflect the latest technical knowledge of methods of determining the acoustical properties from the
specific family of building products or equipment under consideration.
NOTE 2 Annex A lists the European and International Standards to be used in the drafting of acoustic provisions
standards. Annex B contains guidance on choosing appropriate properties. Annex C describes the relevant
measured acoustic properties for common products.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1
general terms
3.1.1
equivalent continuous sound pressure level, L (dB)
eq,T
value of the sound pressure level in decibels of a continuous, steady sound, that within a specified time
interval, T, has the same mean squared sound pressure as the sound under consideration that varies with
time
3.1.2
octave band
band of frequencies in which the upper limit of the band is twice the frequency of the lower limit
3.1.3
one third octave band
1/3
band of frequencies in which the upper limit of the band is 2 times the frequency of the lower limit
3.2
airborne sound insulation
ability of building elements or buildings to reduce sound transmission when the excitation is in the air,
expressed in terms of several related quantities
[SOURCE: EN ISO 12354-1:2017, modified]
3.2.1
sound reduction index, R (dB)
ten times the common logarithm of the ratio of the sound power W1 incident on a test specimen to the
sound power W2 transmitted through the specimen, representing a laboratory measurement
3.2.2
sound reduction improvement index, ΔR (dB)
difference in sound reduction index between a basic structural element with an additional layer (e.g. a
resilient wall skin, a suspended ceiling, a floating floor) and the basic structural element without this
layer, representing a laboratory measurement
3.2.3
apparent sound reduction index, R’ (dB)
minus 10 times the common logarithm of the ratio of the total sound power W transmitted into the
tot
receiving room to the sound power W which is incident on a separating element, representing a field
measurement
3.2.4
intensity sound reduction index, R (dB)
I
laboratory measurement of the sound reduction index using sound intensity measurements in a stated
frequency band, representing a laboratory measurement
3.2.5
level difference, D (dB)
difference in the space and time average sound pressure levels produced in two rooms by one or more
sound source in one of them
3.2.6
normalized level difference, D (dB)
n
difference in the space and time average sound pressure levels produced in two rooms by one or more
sound sources in one of them, corresponding to the reference equivalent sound absorption area in the
receiving room, representing a field measurement
3.2.7
element-normalized level difference, D (dB)
n,e
difference in the space and time average sound pressure level produced in two rooms by a source in one
room, where sound transmission is only due to a small technical element (e.g. transfer air devices,
electrical cable ducts, transit sealing systems), representing a laboratory measurement
3.2.8
standardized level difference, D (dB)
nT
difference in the space and time average sound pressure levels produced in two rooms by one or more
sound sources in one of them, corresponding to a reference value of the reverberation time of 0,5 s in the
receiving room level, representing a field measurement
3.2.9
normalized flanking level difference D (dB)
n,f
difference in the space and time average sound pressure level produced in two rooms by a source in one
of them, for transmission via a specified flanking path, representing a laboratory measurement
3.3
rating of airborne sound insulation
single number quantity rating of the airborne sound insulation, expressed in terms of several related
quantities
[SOURCE: EN ISO 717-1:2020, modified]
3.3.1
C (dB)
spectrum adaptation term to be added to the single-number quantity to take account of spectrum No.1
3.3.2
C (dB)
tr
spectrum adaptation term to be added to the single-number quantity to take account of spectrum No.2
3.3.3
(dB)
weighted sound reduction index, Rw
single-number quantity that characterizes the airborne sound insulation of a product or building element,
representing a laboratory measurement
3.3.4
weighted sound reduction improvement index, ΔR (dB)
w
single-number quantity that characterizes the improvement in the sound reduction index, representing
a laboratory measurement
3.3.5
weighted intensity sound reduction index, R (dB)
I,w
single-number quantity that characterizes the airborne sound insulation of a product or building element
over a range of frequencies using an intensity technique, representing a laboratory measurement
3.3.6
weighted apparent sound
...
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