EN 1279-4:2002

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Steklo v stavbah - Izolacijski stekleni elementi - 4. del: Preskusne metode za fizikalne lastnosti robnih tesnilGlas im Bauwesen - Mehrscheiben-Isolierglas - Teil 4: Verfahren zur Prüfung der physikalischen Eigenschaften des RandverbundesVerre dans la construction - Vitrage isolant préfabriqué scellé - Partie 4 : Méthodes d'essai de propriétés physique des produits de scellementGlass in building - Insulating glass units - Part 4: Methods of test for the physical attributes of edge seals81.040.20Steklo v gradbeništvuGlass in buildingICS:Ta slovenski standard je istoveten z:EN 1279-4:2002SIST EN 1279-4:2004en01-september-2004SIST EN 1279-4:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1279-4July 2002ICS 81.040.20English versionGlass in building - Insulating glass units - Part 4: Methods of testfor the physical attributes of edge sealsVerre dans la construction - Vitrage isolant préfabriquéscellé - Partie 4: Méthodes d'essai des propriétésphysiques des produits de scellementGlas im Bauwesen - Mehrscheiben-Isolierglas - Teil 4:Prüfmethoden der physikalischen Eigenschaften desRandverbundesThis European Standard was approved by CEN on 5 March 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1279-4:2002 ESIST EN 1279-4:2004

In cases where there is no protection against direct ultraviolet radiation at the edges, such as structuralsealant glazing systems, additional European technical specifications should be followed. See Bibliography [4]and [5].NOTE 2
Units where the nature is only artistic are not part of this standard.This European Standard, which is inextricably bound up with the other Parts of the standard,covers evaluation of the edge seal strength, and partial evaluation of moisture and gaspermeation through sealants, by testing and/or report examination as means of verifyingwhether a product made in accordance with its system description, and its variations inaccordance with prEN 1279-1, conforms with the relevant aspects of the definition ofinsulating glass units.2Normative referencesThis European Standard incorporates, by dated or undated reference, provisions from otherpublications. These normative references are cited at the appropriate places in the text and thepublications are listed hereafter. For dated references, subsequent amendments to or revisionsof any of these publications apply to this European Standard only when incorporated in it byamendment or revision. For undated references, the latest edition of the publication referredto applies (including amendments).EN 410, Glass in building - Determination of luminous and solar characteristics of glazing.EN 1096, Glass in building - Coated glass.prEN 1279-1, Glass in building - Insulating glass units - Part 1: Generalities, dimensionaltolerances and rules for the system description.prEN 1279-2, Glass in building - Insulating glass units - Part 2: Long term test method andrequirements on moisture vapour penetration.prEN 1279-3, Glass in building - Insulating glass units - Part 3: Long term test method andrequirements for gas leakage rate and for gas concentration tolerances.EN 1279-6, Glass in building - Insulating glass units - Part 6: Factory production controland periodic tests.SIST EN 1279-4:2004

Stress in the sealante
Strain in the sealantFigure 1 - Stress/strain triangleKey1 Loss of cohesion2 Loss of adhesionFigure 2 - Illustration of loss of adhesion or cohesion extends through the whole depth4.2Conformity with the definition of insulating glass units4.2.1GeneralThere shall be available a test report of the concerned insulating glass outer sealant accordingto clause 6 of this EN 1279-4:2002 (which summarizes the test report in which the edge sealstrength is recorded) with a moisture penetration test report according toprEN 1279-2 and in case of gas-filled units also with a gas leakage rate report according toprEN 1279-3, and fulfills the requirement to demonstrate the conformity with the definitionof insulating glass units. Refer to prEN 1279-1.In case of sealing the insulating glass unit also on a coating (in accordance with EN 1096) notintended to be stripped, a test report according to annex D of this EN 1279-4:2002 shall bemade available for inclusion in the assembling of the other test reports. Refer toprEN 1279-1.SIST EN 1279-4:2004

Although only clear float glass is referred to in the standard, it is the responsibility of the insulatingglass manufacturer to ensure that the edge sealant is capable of bonding to all used glasses listed inprEN 1279-1. The requirements for the use of coated glasses in accordance with EN 1096, are detailed inannex D.4.2.2Possibility to substitute the sealant4.2.2.1Limits of applicationThis possibility is applicable only in the case of insulating glass units with hollow metalspacer. For other systems, no experience is available for the setting up of substitution rules.Refer also to prEN 1279-1.4.2.2.2Air filled insulating glass unitsAvailable test reports according to clause 6 of this EN 1279-4:2002 allows for thesubstitution of the sealant without repeated moisture penetration testing according to prEN1279-2, when the substituting sealant:(a)for units with an I value below 0,1:–shall be applicable with the same production equipment;–has been previously applied in insulating glass units which have been demonstrated tocomply with prEN 1279-2. The demonstrated compliance may have been obtainedseparately using units of different construction and therefore the test report numbers mayvary;–and the moisture vapour transmission rate of the sealant is not more than 20 % higherthan that of the initial sealant;–and the stress/strain curve comparison satisfies the requirement in annex B;–and the relevant Parts of EN 1279-6 (periodic test, mixing ratio, hardness test, etcetera)shall be carried out.(b)for units with an I value between 0,1 and 0,2: the list under a) applies however with thefollowing deviation:–the moisture vapour transmission rate through membrane of the substitute sealant shall bethe same or lower than the initial sealant.4.2.2.3Gas filled insulating glass unitsAvailable test reports according to clause 6 of this EN 1279-4:2002 allows to substitute thesealant without repeated gas loss rate testing according to prEN 1279-3, when the substitutingsealant:(a)for units with a gas loss rate Li below 0,8 %a-1:–is allowed for limiting the moisture vapour penetration in accordance with 4.2.2.2;–has been previously applied in insulating glass units which have been demonstrated tocomply with prEN 1279-3. The demonstrated compliance may have been obtainedSIST EN 1279-4:2004

the coated glasses (coated glass in accordance with EN 1096), coating not intended to bestripped from the area where the insulating glass will be sealed without repeated moisturepenetration testing according to prEN 1279-2, and in case of gas-filled units without repeatedgas loss rate testing according to prEN 1279-3, when the provisions set out in the annex D arefollowed. Refer also to prEN 1279-1.5Test methods5.1Adhesion5.1.1PrincipleThe test consists of preparing a number of glass-sealant-glass joints and subjecting them toageing regimes as outlined in 5.1.2 of this EN 1279-4:2002:–heat exposure,–water immersion,–UV exposure,as well as to no ageing (initial test) before testing under tensile load.The test specimen shapes and bond preparations shall be as given in normative annex A. Forinsulating glass units with systems which cannot apply annex A, the test specimen shall be50 mm cut from the edge seal of an insulating glass unit. The shape of the samples shall be assimilar as possible. Their cross sections shall have a cross section as near as possible to thetest specimen described in annex A. The number of joints are seven per exposure condition.SIST EN 1279-4:2004
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