EN 1096-3:2012

Glass in building - Coated glass - Part 3: Requirements and test methods for class C and D coatings

This European Standard specifies requirements and a test method related to resistance to solar radiation for coated glass for use in buildings.
This test is aimed at evaluating if the exposure to solar radiation over an extended period of time produces any appreciable change in light transmittance and solar transmittance of the coated glass as well as a reduction of the infrared reflectance in the case of low emissivity coatings.
This European Standard applies to Class C and D coatings as defined in EN 1096-1 and used in insulating glass units.

Glas im Bauwesen - Beschichtetes Glas - Teil 3: Anforderungen an und Prüfverfahren für Beschichtungen der Klassen C und D

Diese Europäische Norm legt Anforderungen und ein Prüfverfahren für die Beständigkeit gegen Sonnenbestrahlung für Beschichtungen auf Glas für die Anwendung im Bauwesen fest.
Diese Prüfung hilft bei der Beurteilung, ob über einen ausgedehnten Zeitraum die Belastung durch Sonnenbestrahlung zu beträchtlichen Veränderungen des Licht- und Sonnenenergietransmissionsgrades des beschichteten Glases und bei Beschichtungen mit geringem Emissionsvermögen zu einer Verringerung des Infrarotreflexionsgrades führt.
Diese Europäische Norm ist, wie in EN 1096-1 festgelegt, auf Beschichtungen der Klassen C und D anwendbar.

Verre dans la construction - Verre à couche - Partie 3: Exigences et méthodes d'essai pour les couches C et D

La présente Norme européenne spécifie les exigences et une méthode d’essai de la résistance au rayonnement solaire applicables au verre à couche employé dans la construction.
Cet essai a pour objectif d’évaluer si l’exposition prolongée du verre à couche au rayonnement solaire produit un changement sensible quelconque dans les facteurs de transmission lumineuse et de transmission de l’énergie solaire, ainsi qu’une réduction de la réflexion infrarouge dans le cas de couches à basse émissivité.
La présente Norme européenne s’applique aux couches de classes C et D telles que définies dans
l’EN 1096-1 et utilisées dans les vitrages isolants préfabriqués scellés.

Steklo v gradbeništvu - Steklo z nanosi - 3. del: Zahteve in preskusne metode za nanose razredov C in D

Ta evropski standard določa zahteve in preskusne metode v zvezi z odpornostjo na sončno sevanje za steklo z nanosi, ki se uporablja v gradbeništvu. S tem preskusom se določa, ali izpostavljenost sončnemu sevanju skozi daljše časovno obdobje povzroča občutne spremembe v svetlobni in solarni prehodnosti stekla z nanosi ter zmanjšanje infrardečega odboja v primeru nanosov nizke emisivnosti. Ta evropski standard se uporablja za nanose razredov C in D iz standarda EN 1096-1, ki se uporabljajo pri izolacijskih steklih.

General Information

• Status: Published
• Publication Date: 17-Jan-2012
• Withdrawal Date: 30-Jul-2012
• ICS: 81.040.20 - Glass in building
• Technical Committee: CEN/TC 129 - Glass in building
• Drafting Committee: CEN/TC 129/WG 6 - Coated glass for windows
• Current Stage: 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
• Start Date: 02-Sep-2017
• Completion Date: 02-Sep-2017
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Mandate: M/135 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on flat glass, profiled glass and glass block products
• Ref Project: SIST EN 1096-3:2012 - Glass in building - Coated glass - Part 3: Requirements and test methods for class C and D coatings

Relations

• Replaces: EN 1096-3:2001 - Glass in building - Coated glass - Part 3: Requirements and test methods for class C and D coatings
• Effective Date: 25-Jan-2012

Overview

EN 1096-3:2012 - "Glass in building - Coated glass - Part 3" defines requirements and test methods related to resistance to solar radiation for coated glass used in insulating glass units. It applies specifically to Class C and D coatings (as defined in EN 1096-1) and evaluates whether prolonged exposure to simulated solar radiation produces appreciable changes in optical and infrared properties (light transmittance, solar transmittance and infrared reflectance for low-emissivity coatings).

Key topics and technical requirements

• Scope: Test method for resistance to solar radiation of coated glass for buildings; focused on Class C and D coatings used in insulating glass units (IGUs).
• Sample preparation:
  • Coated annealed glass: sample 1000 × 500 mm; cut two test pieces ≥ 250 × 250 mm.
  • Thermally treated (toughened/heat‑strengthened) coatings: special procedures in Annex A.
  • Test specimens: two IGUs - one test piece, 12 mm airspace, 4 mm clear float glass; edge protected with aluminium foil.
• Cleaning & inspection: Initial/final visual inspection under artificial sky per EN 1096-1; cleaning with demineralised water (conductivity < 30 µS).
• Exposure to simulated solar radiation:
  • Radiation spectral distribution similar to solar global spectrum; UVB 280–315 nm (1–4%), UVA 315–380 nm (3–9%), remainder visible/IR.
  • Total irradiance on test-piece surface: (900 ± 100) W/m² (detector-adjusted reference given).
  • Exposure time: (1000 ± 24) h (planar array) or (2000 ± 24) h (circular array) - examples in Annex C.
  • Reference glass piece properties: solar direct absorption αe ≥ 0.92; normal emissivity ≥ 0.84; thermal conductance ≥ 100 W/(m²·K).
• Performance limits:
  • Transmittance change at 550 nm and 900 nm: no more than ±0.03 compared to unexposed sample.
  • Low‑emissivity coatings: infrared reflectance at 8 µm shall not decrease by more than 0.02.
• Measurements: Spectrophotometric measurements at 550 nm and 900 nm; reflectance at 8 µm for low‑e coatings. Annex B gives criteria for demonstrating coating equivalence (when full testing may be unnecessary).

Applications and practical value

• Ensures durability and optical stability of coated glazing under solar exposure - critical for thermal performance, energy efficiency and visual comfort.
• Used for product qualification, factory quality control, R&D on new coating formulations and third‑party certification.
• Supports specification and procurement decisions for facades, curtain walls, windows and IGUs, especially where long‑term solar performance (solar factor, visible light transmittance, low‑e performance) matters.

Who uses this standard

• Glass manufacturers and coating producers
• Independent testing laboratories and certification bodies
• Architects, façade engineers and specifiers
• Building product compliance and quality managers

Related standards

• EN 1096-1 (definitions/classification), EN 410 (luminous & solar characteristics), EN 572-1/2 (float glass), EN 12150-1 (toughened glass), EN 12898 (emissivity), EN 1279 (insulating glass units)

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Steklo v gradbeništvu - Steklo z nanosi - 3. del: Zahteve in preskusne metode za nanose razredov C in DGlas im Bauwesen - Beschichtetes Glas - Teil 3: Anforderungen an und Prüfverfahren für Beschichtungen der Klassen C und DVerre dans la construction - Verre à couche - Partie 3: Exigences et méthodes d'essai pour les couches C et DGlass in building - Coated glass - Part 3: Requirements and test methods for class C and D coatings81.040.20Steklo v gradbeništvuGlass in buildingICS:Ta slovenski standard je istoveten z:EN 1096-3:2012SIST EN 1096-3:2012en,fr,de01-marec-2012SIST EN 1096-3:2012SLOVENSKI
STANDARDSIST EN 1096-3:20011DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1096-3
January 2012 ICS 81.040.20 Supersedes EN 1096-3:2001English Version
Glass in building - Coated glass - Part 3: Requirements and test methods for class C and D coatings
Verre dans la construction - Verre à couche - Partie 3: Exigences et méthodes d'essai pour les couches C et D
Glas im Bauwesen - Beschichtetes Glas - Teil 3: Anforderungen an und Prüfverfahren für Beschichtungen der Klassen C und D This European Standard was approved by CEN on 3 December 2011.
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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland , Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1096-3:2012: ESIST EN 1096-3:2012

Special procedures for thermally treated coated glass .9A.1 General .9A.2 Spectrophotometric measurements .9A.2.1 Samples and test pieces for spectrophotometric measurements .9A.2.2 Procedures .9Annex B (normative)
Criteria to demonstrate equivalence of coatings . 11B.1 General . 11B.2 Composition of coatings . 11B.3 Previous test reports . 11B.4 Evaluation . 11B.5 Examples . 11Annex C (normative)
Example of two test apparatus which satisfy the exposure conditions given in 7.1 . 13C.1 Plane arrangement of the test pieces . 13C.2 Circular arrangement of the test pieces . 15Annex D (informative)
Summary of test report . 16Bibliography . 18 SIST EN 1096-3:2012

 reference to the future EN 1096-5, Test method and classification for the Self-cleaning performances of coated glass surfaces;
 the introduction of a method to deal with toughenable / heat strengthenable and to be toughened / to be heat strengthened coated glass, see Annex A.
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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
For a glass claimed to have a low emissivity coating, the reflectance at 8 µm shall decrease by no more than 0,02. 5 Samples, test pieces and test specimens 5.1 Test pieces 5.1.1 Coated annealed glass A sample of 1000 mm x 500 mm is needed. Two square test pieces of minimum size 250 mm x 250 mm shall be cut from the sample. 5.1.2 Toughened or heat strengthened coated glass For the thermally treated coated glass, defined in EN 1096-1:2012, 3.1.8 to 3.1.11, as the test pieces cannot be cut from test samples, a special procedure has to be employed to obtain the test pieces (see annex A). 5.1.3 Coated toughened or heat strengthened glass Use coated annealed glass samples for testing this type of coated glass.
5.2 Preparation of test specimens Two insulating glass units shall be manufactured as test specimens. The insulating glass units shall consist of one of the test pieces, 12 mm airspace and a piece of 4 mm clear float glass (in compliance with EN 572-1 and EN 572-2). The dew point of the test specimens shall not be higher than - 25°C, when measured at
(23 ± 5) °C, according to EN 1279-2:2002, Annex A, or equivalent. The dew point is ensured when the insulating glass unit is manufactured in accordance with the EN 1279 series. The edge area of the test specimens shall be covered with a reflecting aluminium foil (40 ± 5) mm wide as a means of protection for the sealant components. 6 Initial evaluation of the test pieces The external surfaces of the test pieces shall be cleaned with a soft tissue using demineralised water, having a conductivity lower than 30 µS. Drying shall also be done with a soft tissue. If necessary this cleaning procedure can be repeated. SIST EN 1096-3:2012

(%) ultraviolet range UVB 280 to 315 1 to 4 ultraviolet range UVA 315 to 380 3 to 9 visible and infrared range > 380 balance
7.2 Test conditions The total irradiance level measured on the surface of the test pieces (surface facing the test lamps) shall be (900 ± 100) W/m². NOTE Calibrated pyranometers with characteristics as reported in ISO 9060 and with a spectral sensitivity in the 305 mm to 2800 mm range should be used for the determination of the total irradiance level. Using these detectors, the measured irradiance level on the surface of the test pieces should be (730 ± 80) W/m². The exposure time for the radiation test shall be:  (1000 ± 24) h in the case of test apparatus given in C.1;  (2000 ± 24) h in the case of test apparatus given in C.2. The test specimen shall be placed with the coating orientated towards the radiation source. When tested, the coating shall be on surface 3. However, when the coating is only to be used on surface 2, then it shall be tested on surface 2. Figures C.1 a) (planar array) or C.1 b) (circular array) show the arrangement of the test specimens
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