SIST EN ISO 7389:2004

Building construction - Jointing products - Determination of elastic recovery of sealants (ISO 7389:2002)

This International Standard specifies a method for the determination of the elastic recovery of sealants after maintained  extension.

Hochbau - Fugendichtstoffe - Bestimmung des Rückstellvermögens (ISO 7389:2002)

Construction immobiliere - Produits pour joints - Détermination de la reprise élastique des mastics (ISO 7389:2002)

L'ISO 7389:2002 prescrit une méthode de détermination de la reprise élastique des mastics après extension maintenue.

Gradnja objektov - Sredstva za stikovanje - Ugotavljanje sposobnosti povrnitve za tesnilne mase (ISO 7389:2002)

General Information

• Status: Published
• Publication Date: 31-Mar-2004
• ICS: 91.100.50 - Binders. Sealing materials
• Technical Committee: ISS SPL.GPO - Building construction
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Apr-2004
• Due Date: 01-Apr-2004
• Completion Date: 01-Apr-2004
• Ref Project: EN ISO 7389:2003 - Building construction - Jointing products - Determination of elastic recovery of sealants (ISO 7389:2002)

Overview

SIST EN ISO 7389:2004 is a European and International Standard specifying a precise method for determining the elastic recovery of sealants used in building construction jointing products. Published by CEN and aligned with ISO 7389:2002, this standard provides a rigorous test procedure to assess how well a sealant returns to its original dimensions after being extended and held in elongation. Elastic recovery is a crucial performance characteristic, indicating the durability and flexibility of the sealant under mechanical stress.

Key Topics

• Scope and Application: Applies to sealants in construction, focusing on their ability to recover elastically after extension.
• Test Specimen Preparation: Sealants are applied between standardized substrates such as mortar, anodized aluminum, or glass, with dimensions and specimen assembly clearly defined.
• Conditioning Methods: Two conditioning methods are specified:
  • Method A: 28 days at controlled temperature (23±2 °C) and humidity (50±5%).
  • Method B: Includes Method A followed by cyclic exposures to heat (70±2 °C) and water immersion to simulate environmental influence, enhancing test realism.
• Test Procedure: Specimens are stretched to 25%, 60%, or 100% elongation and held for 24 hours. Elastic recovery is measured one hour after releasing the specimen.
• Calculation of Elastic Recovery: Expressed as a percentage relative to the elongation, using precise width measurements before extension, during extension, and after recovery.
• Reporting Requirements: Test reports must document sealant type, batch, substrate material, conditioning method, elongation percent, individual and average elastic recovery percentages, as well as any deviations from the standard.

Applications

SIST EN ISO 7389:2004 is essential for manufacturers, testing laboratories, and quality assurance teams focusing on:

• Sealant Evaluation: Verifying sealant performance for use in expansion joints, curtain walls, façade seals, and other building applications where joint flexibility and resilience are critical.
• Product Development: Guiding formulation adjustments to enhance elastic properties, ensuring sealants meet expected service life demands.
• Compliance and Certification: Fulfilling regulatory requirements and ensuring conformity with European and international quality standards in construction materials.
• Durability Testing: Method B conditioning simulates real-world exposure, providing insights into long-term sealant behavior under temperature and moisture cycles.

Related Standards

• ISO 6927: Vocabulary of jointing products and sealants, offering standardized terminology supporting clear communication in testing and specification.
• ISO 13640: Specifications for test substrates, ensuring uniformity in materials used across sealant testing processes to produce comparable results.
• EN 27389:1990 (now superseded): Previous European standard on sealant recovery; SIST EN ISO 7389:2004 replaces it with updated methods and requirements.

By adhering to SIST EN ISO 7389:2004, industry professionals can confidently assess the elastic recovery of sealants, ensuring better durability, quality, and performance in building construction jointing solutions. This contributes to reliable, long-lasting sealing applications that maintain building integrity under dynamic environmental and mechanical conditions.

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2004
1DGRPHãþD
SIST EN 27389:1996
Gradnja objektov - Sredstva za stikovanje - Ugotavljanje sposobnosti povrnitve za
tesnilne mase (ISO 7389:2002)
Building construction - Jointing products - Determination of elastic recovery of sealants
(ISO 7389:2002)
Hochbau - Fugendichtstoffe - Bestimmung des Rückstellvermögens (ISO 7389:2002)
Construction immobiliere - Produits pour joints - Détermination de la reprise élastique
des mastics (ISO 7389:2002)
Ta slovenski standard je istoveten z: EN ISO 7389:2003
ICS:
91.100.50 Veziva. Tesnilni materiali Binders. Sealing materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 7389
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2003
ICS 91.100.50 Supersedes EN 27389:1990
English version
Building construction - Jointing products - Determination of
elastic recovery of sealants (ISO 7389:2002)
Construction immobilière - Produits pour joints - Hochbau - Fugendichtstoffe - Bestimmung des
Détermination de la reprise élastique des mastics (ISO Rückstellvermögens (ISO 7389:2002)
7389:2002)
This European Standard was approved by CEN on 25 September 2003.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 7389:2003 E
worldwide for CEN national Members.

Foreword
The text of ISO 7389:2002 has been prepared by Technical Committee ISO/TC 59 "Building
construction” of the International Organization for Standardization (ISO) and has been taken
over as EN ISO 7389:2003 by CMC.
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 May 2004, and conflicting national standards
shall be withdrawn at the latest by May 2004.
This document supersedes EN 27389:1990.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and
the United Kingdom.
Endorsement notice
The text of ISO 7389:2002 has been approved by CEN as EN ISO 7389:2003 without any
modifications.
NOTE Normative references to International Standards are listed in Annex ZA (normative).
Annex ZA
(normative)
Normative references to international publications
with their relevant European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of
any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
NOTE Where an International Publication has been modified by common modifications, indicated
by (mod.), the relevant EN/HD applies.
Publication Year Title EN Year
ISO 6927 1981 Building construction - Jointing EN ISO 26927 1990
products - Sealants – Vocabulary
INTERNATIONAL ISO
STANDARD 7389
Third edition
2002-10-01
Building construction — Jointing
products — Determination of elastic
recovery of sealants
Construction immobilière — Produits pour joints — Détermination de la
reprise élastique des mastics
Reference number
ISO 7389:2002(E)
ISO 7389:2002(E)
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ii ISO 2002 – All rights reserved

ISO 7389:2002(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO7389 was prepared by Technical Committee ISO/TC59, Building construction,
Subcommittee SC 8, Jointing products.
This third edition cancels and replaces the second edition (ISO 7389:1987), subclauses 5.1 and 5.7 and clause 8 of
which have been technically revised.
©
ISO 2002 – All rights reserved iii
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