SIST EN ISO 29768:2022

Thermal insulating products for building applications - Determination of linear dimensions of test specimens (ISO 29768:2022)

This document specifies the characteristics and choice of measuring equipment and the procedure for determining the linear dimensions of test specimens that are taken from thermal insulating products. The procedures for measuring the dimensions of full-size products are specified in ISO 29465 and ISO 29466.

Wärmedämmstoffe für das Bauwesen - Bestimmung der linearen Maße von Probekörpern (ISO 29768:2022)

Dieses Dokument legt die Leistungsmerkmale und die Auswahl von Messeinrichtungen und das Verfahren zum Bestimmen der linearen Maße von Probekörpern, die aus einem Wärmedämmstoff entnommen wurden, fest. Die Verfahren zur Bestimmung der Maße von Produkten in Liefermaßen sind in ISO 29465 und ISO 29466 beschrieben.

Produits isolants thermiques destinés aux applications du bâtiment - Détermination des dimensions linéaires des éprouvettes d'essai (ISO 29768:2022)

Le présent document spécifie les caractéristiques et le choix de l’équipement de mesure, ainsi que le mode opératoire permettant de déterminer les dimensions linéaires des éprouvettes prélevées sur les produits isolants thermiques. Les modes opératoires pour mesurer les dimensions des produits en vraies dimensions sont définis dans l’ISO 29465 et l’ISO 29466.

Toplotnoizolacijski proizvodi za uporabo v gradbeništvu - Ugotavljanje linearnih dimenzij preskušancev (ISO 29768:2022)

Ta evropski standard določa karakteristike in izbiro merilne opreme ter postopek za ugotavljanje linearnih dimenzij preskušancev iz toplotnoizolacijskih proizvodov. Postopki za merjenje dimenzij proizvodov naravne velikosti so navedeni v standardih EN 822 in EN 823.

General Information

• Status: Published
• Public Enquiry End Date: 15-Jul-2021
• Publication Date: 10-Oct-2022
• ICS: 91.100.60 - Thermal and sound insulating materials
• Technical Committee: TOP - Thermal insulation
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 29-Sep-2022
• Due Date: 04-Dec-2022
• Completion Date: 11-Oct-2022
• Ref Project: EN ISO 29768:2022 - Thermal insulating products for building applications - Determination of linear dimensions of test specimens (ISO 29768:2022)

Relations

• Replaces: SIST EN 12085:2013 - Thermal insulating products for building applications - Determination of linear dimensions of test specimens
• Effective Date: 01-Nov-2022

Overview

EN ISO 29768:2022 - "Thermal insulating products for building applications - Determination of linear dimensions of test specimens" - specifies how to measure the linear dimensions of test specimens taken from thermal insulation products. It defines suitable measuring equipment, minimum accuracy requirements, test conditions (including alternative tropical conditions), and basic procedures to obtain reliable, repeatable linear measurements for use in thermal‑insulation testing and product verification. This European adoption supersedes EN 12085:2013 and is identical to ISO 29768:2022.

Key topics and requirements

• Scope and principle: Measure the distance between defined points, parallel lines or planes on test specimens using apparatus that provides the required accuracy.
• Approved apparatus:
  • Dial gauge (reading at least 0.05 mm; measuring pressure ≤ 1 kPa).
  • Micrometer (reading at least 0.05 mm) with a device to indicate onset of contact force (example: low‑pressure aluminum plate arrangement).
  • Sliding caliper (reading at least 0.1 mm), used only if it does not deform the specimen.
  • Metal rule or metal tape (graduated in millimetres; reading to at least 0.5 mm).
• Accuracy guidance:
  • Tabled maximum permissible errors are given both in absolute mm and percentage terms to guide instrument selection (e.g., dial gauge/micrometer for highest accuracy, sliding caliper for medium accuracy, metal tape/rule for coarse measurements).
• Specimen preparation and conditions:
  • Number, size and conditioning follow the relevant product/test standard. If no product standard exists, parties should agree sampling.
  • Tropical test conditions (if applicable) are specified as (27 ± 2) °C and (65 ± 5) % RH and must be recorded in reports.
• Measurement procedure:
  • At least two measurement locations per specimen, widely separated to obtain representative mean values.
  • Methods described for use of dial gauge, micrometer, caliper and rule/tape to minimise measurement error and specimen deformation.
• Reporting and accuracy:
  • Results, equipment, test conditions and measurement locations are recorded; accuracy and conformity to the selected method are addressed (see clauses on calculation, expression of results and accuracy).

Applications and users

• Practical for laboratories and manufacturers performing dimensional checks on insulation test specimens prior to thermal performance testing (e.g., thermal conductivity, heat flow).
• Used by: test laboratories, certification bodies, product manufacturers, quality control engineers, R&D teams and standards committees involved in building insulation.
• Keywords: EN ISO 29768:2022, thermal insulating products, linear dimensions, measurement accuracy, dial gauge, micrometer, sliding caliper, insulation testing.

Related standards

• ISO 29465 and ISO 29466 - procedures for measuring dimensions of full‑size insulation products (referenced as complementary standards).
• EN ISO 29768:2022 replaces EN 12085:2013 and was prepared in collaboration between ISO/TC 163 and CEN/TC 88.

This standard ensures consistent, traceable linear measurements of insulation test specimens to support reliable thermal testing and product conformity assessment.

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2022
Nadomešča:
SIST EN 12085:2013
Toplotnoizolacijski proizvodi za uporabo v gradbeništvu - Ugotavljanje linearnih
dimenzij preskušancev (ISO 29768:2022)
Thermal insulating products for building applications - Determination of linear dimensions
of test specimens (ISO 29768:2022)
Wärmedämmstoffe für das Bauwesen - Bestimmung der linearen Maße von
Probekörpern (ISO 29768:2022)
Produits isolants thermiques destinés aux applications du bâtiment - Détermination des
dimensions linéaires des éprouvettes d'essai (ISO 29768:2022)
Ta slovenski standard je istoveten z: EN ISO 29768:2022
ICS:
91.100.60 Materiali za toplotno in Thermal and sound insulating
zvočno izolacijo materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 29768
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2022
EUROPÄISCHE NORM
ICS 91.100.60 Supersedes EN 12085:2013
English Version
Thermal insulating products for building applications -
Determination of linear dimensions of test specimens (ISO
29768:2022)
Produits isolants thermiques destinés aux applications Wärmedämmstoffe für das Bauwesen - Bestimmung
du bâtiment - Détermination des dimensions linéaires der linearen Maße von Probekörpern (ISO
des éprouvettes (ISO 29768:2022) 29768:2022)
This European Standard was approved by CEN on 8 August 2022.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 29768:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 29768:2022) has been prepared by Technical Committee ISO/TC 163 "Thermal
performance and energy use in the built environment" in collaboration with Technical Committee
CEN/TC 88 “Thermal insulating materials and products” the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by March 2023, and conflicting national standards shall
be withdrawn at the latest by September 2025.
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 EN 12085:2013.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: 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 the
United Kingdom.
Endorsement notice
The text of ISO 29768:2022 has been approved by CEN as EN ISO 29768:2022 without any modification.

INTERNATIONAL ISO
STANDARD 29768
Second edition
2022-08
Thermal insulating products
for building applications —
Determination of linear dimensions of
test specimens
Produits isolants thermiques destinés aux applications du bâtiment —
Détermination des dimensions linéaires des éprouvettes
Reference number
ISO 29768:2022(E)
ISO 29768:2022(E)
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 29768:2022(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 1
6 Test specimens . 2
7 Procedure .3
7.1 Test conditions . 3
7.2 Choice of measuring equipment . 3
7.3 Number and location of measurements . 4
7.4 Measurement with dial gauge . 4
7.5 Measurement with micrometer . 4
7.6 Measurement with a sliding caliper . 4
7.7 Measurement with metal rule or metal tape . 4
8 Calculation and expression of results . 5
9 Accuracy of measurement.5
10 Test report . 5
Bibliography . 6
iii
ISO 29768:2022(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents s
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