prEN 572-9

Glass in building - Basic soda lime silicate glass products - Part 9: Product standard

This European Standard covers the evaluation of conformity and the factory production control of basic soda lime silicate glass products for use in buildings.
For glass products with electrical wiring or connections for, e.g. alarm or heating purposes, other directives, e.g. Low Voltage Directive, may apply.

Glas im Bauwesen - Basiserzeugnisse aus Kalk‐Natronsilicatglas - Teil 9: Produktnorm

Diese Europäische Norm umfasst die Konformitätsbewertung und die werkseigene Produktionskontrolle von Basiserzeugnissen aus Kalk-Natronsilicatglas zur Anwendung im Bauwesen.
Für Glaserzeugnisse mit elektrischer Verkabelung oder Anschlüssen, wie z. B. Alarm- oder Heizungs-anwendungen, können weitere Richtlinien, z. B. die Niederspannungsrichtlinie, gelten.

Verre dans la construction - Produits de base : verre de silicate sodo-calcique - Partie 9 : Norme de produit

La présente Norme européenne couvre l’évaluation de la conformité et le contrôle de la production en usine pour les produits verriers de silicate sodo-calcique de base en usage dans la construction.
Pour les produits verriers équipés d’un câblage ou de branchements électriques pour les besoins d’alarme ou de chauffage par exemple, d’autres directives comme la Directive Basse tension peuvent s’appliquer.

Steklo v gradbeništvu - Osnovni izdelki iz natrij-kalcijevega silikatnega stekla - 9. del: Standard za proizvod

General Information

• Status: Not Published
• Publication Date: 10-Feb-2019
• ICS: 81.040.20 - Glass in building
• Technical Committee: CEN/TC 129 - Glass in building
• Drafting Committee: CEN/TC 129/WG 1 - Basic glass products
• Current Stage: 4098 - Decision to abandon - Enquiry
• Start Date: 23-Jan-2020
• Completion Date: 14-Apr-2025
• 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
• 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: oSIST prEN 572-9:2017 - Glass in building - Basic soda lime silicate glass products - Part 9: Product standard

Relations

• Revises: EN 572-9:2004 - Glass in building - Basic soda lime silicate glass products - Part 9: Evaluation of conformity/Product standard
• Effective Date: 19-Jan-2023

Overview

The European Standard prEN 572-9:2017, titled "Glass in building - Basic soda lime silicate glass products - Part 9: Product standard," focuses on the evaluation of conformity and factory production control (FPC) of basic soda lime silicate glass products intended for building applications. Developed by CEN Technical Committee CEN/TC 129, this standard ensures consistent quality and safety in glass products used in construction across Europe.

This updated standard supersedes EN 572-9:2004 and aligns with current EU regulations, including Regulation (EU) No 305/2011 (Construction Products Regulation) and associated amendments. It clarifies requirements for product performance characteristics, factory control systems, and conformity assessment procedures – essential for manufacturers, suppliers, and regulators in the building glass industry.

Key Topics

• Scope: Covers conformity evaluation and factory production controls of basic soda lime silicate glass used in buildings. Products involving electrical wiring are subject to additional directives such as the Low Voltage Directive.

• Product Description and Characteristics: Defines essential characteristics related to physical, mechanical, and spectrophotometric performance. These include bending strength, durability, solar factor (g-value), and mechanical resistance.

• Assessment & Verification of Constancy of Performance (AVCP): Details procedures for type testing, factory production control, and continuous surveillance ensuring products meet declared performance levels.

• Factory Production Control (FPC): Includes requirements for documented, permanent internal control covering inspection, testing, management responsibilities, and handling of non-conforming products.

• Marking and Labelling: Specifies mandatory product marking protocols to ensure traceability and provide performance information to stakeholders.

• Normative References: Links to related European standards specifying test methods (e.g., EN 410 for solar characteristics, EN 673 for thermal transmittance, and EN 356 for security glazing).

Applications

The prEN 572-9 standard applies primarily to basic soda lime silicate glass products used in architecture and building construction, including:

• Float glass, wired glass, patterned, and channel-shaped glass products.
• Glass elements used in windows, façades, doors, partitions, and skylights.
• Building components where consistent mechanical resistance, thermal, solar, and safety properties are critical.
• Manufacturing processes requiring strict quality control to comply with regulatory mandates.
• Supplier product declarations for construction works in compliance with EU Construction Products Regulation.

The standard plays a vital role in ensuring safety, performance reliability, and regulatory compliance in building glass, supporting architects, engineers, manufacturers, and construction professionals.

Related Standards

prEN 572-9:2017 complements a suite of European standards related to glass in building:

• EN 572 Series: Defines types and properties of soda lime silicate glass (Parts 1 through 8) covering definitions, manufacturing forms, and sizes.
• EN 410: Testing methods for luminous and solar characteristics of glazing.
• EN 356: Security glazing test and classification for resistance against manual attack.
• EN 673: Methods for determining thermal transmittance (U value) of glass.
• EN 12600: Pendulum impact testing and classification of flat glass.
• EN 13501: Fire classification standards relevant for building materials.
• EN 15998: Glass safety in case of fire - testing methods for classification.
• prEN 16612: Load resistance calculation methods for glass panes.

These complementary standards ensure a comprehensive regulatory framework for glass products’ safety, performance, and sustainability in building applications.

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Keywords: prEN 572-9, soda lime silicate glass, glass in building, factory production control, conformity assessment, European standard, building glass products, Construction Products Regulation, glass performance, product standard, glass manufacturing, architectural glass, glass safety standards, CEN/TC 129.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2017
Steklo v gradbeništvu - Osnovni izdelki iz natrij-kalcijevega silikatnega stekla - 9.
del: Standard za proizvod
Glass in building - Basic soda lime silicate glass products - Part 9: Product standard
*ODVLP%DXZHVHQ%DVLVHU]HXJQLVVHDXV.DON"1DWURQVLOLFDWJODV7HLO3URGXNWQRUP
Verre dans la construction - Produits de base : verre de silicate sodo-calcique - Partie 9 :
Norme de produit
Ta slovenski standard je istoveten z: prEN 572-9
ICS:
81.040.20 Steklo v gradbeništvu Glass in building
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2017
ICS 81.040.20 Will supersede EN 572-9:2004
English Version
Glass in building - Basic soda lime silicate glass products -
Part 9: Product standard
Verre dans la construction - Produits de base : verre de Glas im Bauwesen - Basiserzeugnisse aus Kalk-
silicate sodo-calcique - Partie 9 : Norme de produit Natronsilicatglas - Teil 9: Produktnorm
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 129.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 572-9:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Requirements . 7
4.1 Product description . 7
4.2 Determination of the characteristic’s performances . 8
4.2.1 Characteristics of basic soda lime silicate glass products . 8
4.2.2 Determination of characteristics of basic soda lime silicate glass products . 8
4.3 Characteristics other than listed in 4.2 . 11
4.4 Dangerous substances . 11
5 Assessment and verification of constancy of performance – AVCP. 12
5.1 General . 12
5.2 Determination of the product type (see 5.1, 1)) . 12
5.2.1 General . 12
5.2.2 Type testing of characteristic’s performances . 13
5.2.3 Test report . 13
5.2.4 Multiple lines/sites . 13
5.3 Factory production control (FPC) . 14
5.3.1 Genera . 14
5.3.2 Inspection of samples in accordance with the prescribed test plan (see 5.1, 2a)) . 14
5.4 Initial inspection of factory and of factory production control (see 5.1, 2b)) . 14
5.5 Continuous surveillance and assessment of the factory production control (see 5.1,
2c)) . 15
5.6 Procedure for modifications . 16
5.7 Pre-production products (e.g. prototypes) . 16
6 Marking and/or labelling . 16
6.1 General . 16
6.2 Product marking. 16
Annex A (normative) Factory production control . 17
A.1 Factory Production Control Requirements . 17
A.1.1 General . 17
A.1.2 Organization . 17
A.1.2.1 Responsibility and authority . 17
A.1.2.2 Management representative for factory production control . 17
A.1.2.3 Management review . 17
A.1.3 Control system . 17
A.1.3.1 General . 17
A.1.3.2 Personnel . 17
A.1.3.3 Documentation . 18
A.1.4 Equipment . 18
A.1.4.1 Testing . 18
A.1.4.2 Manufacturing . 18
A.1.5 Inspection and testing . 18
A.1.6 Non-complying materials/products . 18
A.2 Inspection and testing tables of basic soda lime silicate glass production . 19
A.2.1 Information on Tables A.1 to A.7 . 19
A.2.2 Use of proxy testing . 19
Annex B (normative) Type testing of spectrophotometric and energy characteristics . 33
B.1 Sampling . 33
B.2 Measurement of spectrophotometric characteristics . 33
B.3 Tolerances on spectrophotometric characteristics . 33
Annex C (informative) Provisions for voluntary involvement of third party(ies) . 35
C.1 General . 35
C.2 Voluntary tasks for third parties . 35
C.3 Marking and labelling . 35
Annex ZA (informative) Relationship of this European Standard with Regulation (EU) No.
305/2011 . 36
ZA.1 Scope and relevant characteristics . 36
ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP) . 37
ZA.3 Assignment of AVCP tasks . 38
Bibliography . 41
European foreword
This document (prEN 572-9:2017) has been prepared by Technical Committee CEN/TC 129 “Glass in
building”, the secretariat of which is held by NBN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 572-9:2004.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports basic work requirements of EU Regulation and essential
requirements of EU Directive(s).
For relationship with EU Regulation/Directive(s), see informative Annex ZA which is an integral part of
this document.
The main changes compared to the previous edition are the following:
a) the standard has been revised to fulfil the requirements of the Regulation (EU) No 305/2011
(Construction Product Regulation), modified by Regulations (EU) No 157/2014, (EU) No 568/2014
and (EU) No 574/2014;
b) the solar factor, g, is listed within the spectrophotometric characteristics to be declared in the
Declaration of Performances (DoP);
c) the durability/conformity assessment is listed within the characteristics to be declared in the DoP;
d) the mechanical resistance shall be given in the DoP by the characteristic bending strength of the
glass.
EN 572, “Glass in Building — Basic soda- lime silicate glass products,” consists of the following Parts:
— Part 1: Definition and general physical and mechanical properties
— Part 2: Float glass
— Part:3 Polished wired glass
— Part 4: Drawn sheet glass
— Part 5: Patterned glass
— Part 6: Wired patterned glass
— Part 7: Wired or unwired channel shaped glass
— Part 8: Supplied and final cut sizes
— Part 9: Product standard
This document contains other aspects of importance for trade.
1 Scope
This European Standard covers the evaluation of conformity and the factory production control of basic
soda lime silicate glass products for use in buildings.
For glass products with electrical wiring or connections for, e.g. alarm or heating purposes, other
directives, e.g. Low Voltage Directive, may apply.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 356, Glass in building — Security glazing — Testing and classification of resistance against manual
attack
EN 410, Glass in building — Determination of luminous and solar characteristics of glazing
EN 572-1:2012+A1:2016, Glass in building — Basic soda-lime silicate glass products — Part 1: Definitions
and general physical and mechanical properties
EN 572-2:2012, Glass in building — Basic soda lime silicate glass products — Part 2: Float glass
EN 572-3:2012, Glass in building — Basic soda lime silicate glass products — Part 3: Polished wired glass
EN 572-4:2012, Glass in building — Basic soda lime silicate glass products — Part 4: Drawn sheet glass
EN 572-5:2012, Glass in building — Basic soda lime silicate glass products — Part 5: Patterned glass
EN 572-6:2012, Glass in building — Basic soda lime silicate glass products — Part 6: Wired patterned
glass
EN 572-7:2012, Glass in building — Basic soda lime silicate glass products — Part 7: Wired or unwired
channel shaped glass
EN 572-8:2012+A1:2016, Glass in building — Basic soda-lime silicate glass products — Part 8: Supplied
and final cut sizes
EN 673, Glass in building — Determination of thermal transmittance (U value) — Calculation method
EN 1063, Glass in building — Security glazing — Testing and classification of resistance against bullet
attack
EN 12600, Glass in building — Pendulum test — Impact test method and classification for flat glass
EN 12758, Glass in building — Glazing and airborne sound insulation — Product descriptions and
determination of properties
EN 13501-1, Fire classification of construction products and building elements — Part 1: Classification
using data from reaction to fire tests
EN 13501-2, Fire classification of construction products and building elements — Part 2: Classification
using data from fire resistance tests, excluding ventilation services
EN 13501-5, Fire classification of construction products and building elements — Part 5: Classification
using data from external fire exposure to roofs tests
EN 13541, Glass in building — Security glazing — Testing and classification of resistance against
explosion pressure
EN 15998, Glass in building — Safety in case of fire, fire resistance — Glass testing methodology for the
purpose of classification
prEN 16612:2017, Glass in building — Determination of the load resistance of glass panes by calculation
ISO 9385, Glass and glass-ceramics — Knoop hardness test
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 572–1, to –8 and the following
apply.
3.1
factory production control
FPC
documented, permanent and internal control of production in a factory, in accordance with this
standard
Note 1 to entry: See also Annex A.
3.2
product type
set of representative performance levels or classes of a construction product, in relation to its essential
characteristics, produced using a given combination of raw materials or other elements in a specific
production process
3.3
essential characteristic
characteristic of the construction product which relate to the basic requirements for construction
works
Note 1 to entry: Basic requirements for construction work are given in the regulation (EU) No 305/2011,
Annex I.
3.4
performance of a construction product
performance related to the relevant essential characteristics, expressed by level or class, or in a
description
3.5
level
result of the assessment of the performance of a construction product in relation to its essential
characteristics, expressed as a numerical value
3.6
class
range of levels, delimited by a minimum and a maximum value, of performance of a construction
product
3.7
type testing
TT
determination of the performance of a product (characteristic, durability), on the basis of either actual
tests or other procedures (such as conventional, standardised, tabulated or general accepted values,
standardised or recognised calculation methods, test reports when made available, …), in accordance
with this European Standard and that demonstrates compliance with this European Standard
3.8
test report
document that covers the results of tests undertaken on a representative sample of the product from
production or on a prototype design of the product
3.9
product description
document that details the relevant parameters, e.g. process conditions, structure, etc., for defining a
product that complies with the standard and that includes specific reference(s) to characteristics that
are modified by the production process
3.10
product family
group of products determined by the manufacturer which is made with similar components and
processes and which is tested for FPC using the same test method
3.11
significant change
variation in performance beyond the permitted tolerance for the characteristic
4 Requirements
4.1 Product description
For conformity purposes, the basic soda lime silicate glass products manufacturer is responsible for the
preparation and maintenance of a product description. This description shall describe the product
and/or product family.
Disclosure of the product description shall be at the discretion of the basic soda lime silicate glass
products manufacturer or his agent except in the case of regulatory requirements.
The product description shall contain at least the following:
— a reference to EN 572-1:2012+A1:2016 and prEN 572-9:2017 and all other standards with which
the manufacturer claims compliance, i.e. EN 572-2:2012, EN 572-3:2012, etc.;
— the type of manufacturing process used, i.e. float glass, drawn sheet glass, rolled glass;
— a description of the product family(ies);
— the spectrophotometric properties of the basic soda lime silicate glass products.
The definition of product families shall be consistent with the product description.
4.2 Determination of the characteristic’s performances
4.2.1 Characteristics of basic soda lime silicate glass products
Basic soda lime silicate glass products are made in accordance with EN 572-1:2012+A1:2016. For the
characteristics listed in Table 1, the values given in EN 572-1:2012+A1:2016, 6.1 and 6.2 shall be used.
Table 1 — Characteristics of basic soda lime silicate glass products
Characteristic Symbol Unit
Density ρ kg/m
Hardness (Knoop hardness in accordance with ISO 9385) HK Dimensionless
0,1/20
Young's modulus E GPa
Poisson's ratio μ Dimensionless
ƒ
Characteristic bending strength MPa
g, k
Resistance against sudden temperature changes and temperature
K
differentials
Specific heat capacity c J/(kg·K)
−1
α
Coefficient of linear expansion K
l
Thermal conductivity λ W/(m·K)
Mean refractive index to visible radiation n Dimensionless
4.2.2 Determination of characteristics of basic soda lime silicate glass products
4.2.2.1 General
If the basic soda lime silicate glass products manufacturer wishes to claim that any performance
characteristic is independent of the production equipment used, then the factory production control
system shall be in accordance with this document including his specific process control conditions.
4.2.2.2 Safety in the case of fire - Resistance to fire
Fire resistance shall be determined and classified in accordance with EN 13501-2.
EN 15998 specifies the testing methodology to be used for glass products that are claiming fire
resistance.
4.2.2.3 Safety in the case of fire - Reaction to fire
Reaction to fire shall be determined and classified in accordance with EN 13501-1.
Basic soda lime silicate glass products are products/materials that do not require to be tested for
reaction to fire (e.g. Products/materials of Classes A1 according to Commission Decision 96/603/EC, as
amended 2000/605/EC).
4.2.2.4 Safety in the case of fire - External fire performance (for roof coverings only)
Where the manufacturer wishes to declare external fire performance (e.g. when subject to regulatory
requirements), the product shall be tested in accordance with EN 13501-5.
4.2.2.5 Safety in use - Bullet resistance: shatter properties and resistance to attack
Bullet resistance shall be determined and classified in accordance with EN 1063.
4.2.2.6 Safety in use - Explosion resistance: impact behaviour and resistance to impact
Explosion resistance shall be determined and classified in accordance with EN 13541.
4.2.2.7 Safety in use - Burglar resistance: shatter properties and resistance to attack
Burglar resistance shall be determined and classified in accordance with EN 356.
4.2.2.8 Safety in use - Pendulum body impact resistance: shatter properties (safe breakability)
and resistance to impact
Pendulum body impact resistance shall be determined and classified in accordance with EN 12600.
4.2.2.9 Safety in use - Mechanical resistance: Resistance against sudden temperature changes
and temperature differentials
The resistance against sudden temperature changes and temperature differentials is a generally
accepted value that is given in EN 572-1:2012+A1:2016 and shall be ensured by compliance with this
standard.
4.2.2.10 Safety in use - Mechanical resistance: Resistance against wind, snow, permanent load
and/or imposed loads of the glass unit
The mechanical resistance of basic soda lime silicate glass products is a characteristic value that shall be
ensured by compliance with this document.
The value to be declared is the characteristic bending strength, as defined in EN 572-1:2012+A1:2016,
6.2, modified by the factor for the glass surface profile ksp from prEN 16612:2017.
Table 2 gives the values for different glass types.
Table 2 — Characteristic bending strength of various types of basic soda lime silicate glass
products
Glass type Characteristic bending strength in
MPa
Float/Drawn sheet 45
Patterned 33
Polished wired 33
Patterned wired 27
As long as prEN 16612 is not applicable for the glass design with respect to the concerned construction
or building site, then the current method of determining mechanical resistance in the country of
destination shall be applied.
4.2.2.11 Protection against noise - Direct airborne sound reduction
The sound reduction indexes shall be determined in accordance with EN 12758.
The values to be declared shall be rounded down to the nearest whole number.
4.2.2.12 Energy conservation and heat retention - Thermal properties
The thermal transmittance value (U-value) shall be determined in accordance with the following
procedure:
a) the emissivity shall be taken equal to 0,837, as given in EN 572-1:2012+A1:2016;
b) the U-value shall be determined by calculation in accordance with EN 673, with the normal
emissivity as defined above and the nominal thickness of the glass panes.
4.2.2.13 Energy conservation and heat retention - Radiation properties: Light transmittance and
reflectance
The light transmittance and light reflectance shall be determined either:
a) in accordance with the following procedure:
1) The light transmittance and light reflectance of one sample of basic soda lime silicate glass
product shall be determined in accordance with EN 410 and Annex B. The exact thicknesses of
the glass shall be measured.
2) The light transmittance and the light reflectance of any other thickness shall be calculated
according to EN 410.
3) The tool used to calculate the light transmittance and the light reflectance shall be validated.
b) or measured following EN 410 and Annex B.
The tolerances on the calculated light transmittance and light reflectance are given in Annex B.
4.2.2.14 Energy conservation and heat retention - Radiation properties: Solar energy
characteristics
The solar direct transmittance, the solar direct reflectance and the total solar energy transmittance
(solar factor or g-value) shall be determined either:
a) in accordance with the following procedure:
1) The solar direct transmittance and solar direct reflectance of one sample of basic soda lime
silicate glass product shall be determined in accordance with EN 410 and Annex B. The exact
thicknesses of the glass shall be measured.
2) The solar direct transmittance, the solar direct reflectance and the total solar energy
transmittance (solar factor or g-value) of any other thickness shall be calculated according to
EN 410.
3) The tool used to calculate the solar direct transmittance, the solar direct reflectance and the
total solar energy transmittance (solar factor or g-value) shall be validated.
b) or measured following EN 410 and Annex B.
The tolerances on the calculated solar energy characteristics are given in Annex B.
4.2.2.15 Durability / conformity with the definition of basic soda lime silicate glass products
Products shall conform to the definition, to the manufacturer product description and fulfil the
requirements of basic soda lime silicate glass products as defined in EN 572-1:2012+A1:2016.
The type testing concerns the product aspects as listed in Table 3.
Table 3 — Product aspects to be checked if product belongs to the group basic soda lime silicate
glass products
Product aspect Requirement Number of
samples
Chemical composition EN 572–1:2012+A1:2016, 5.1 1
Thickness a 1
EN 572–8:2012+A1:2016, 5.2.2, Table 2
Light transmittance (distinction EN 572–1:2012+A1:2016, 6.3 1
clear glass from tinted glass)
a
The reference to this table is given for the convenience of the user. The tolerances listed in that table are the
same as in the individual EN 572 part appropriate to the product.
When products conform to the definition of basic soda lime silicate glass as in 4.1, the other
characteristics’ performances in 4.2 are ensured during an economically reasonable working life.
The durability / conformity of basic soda lime silicate glass products, including their characteristics, is
ensured by the following:
— compliance with this standard;
— compliance with instructions from the glass product manufacturer or supplier.
The manufacturer shall supply specific installation instructions or make reference to appropriate
technical specifications.
NOTE The durability of glass products depends also on:
— building and construction movements due to various actions;
— building and construction vibrations due to various actions;
— deflection and racking of the glass support due to various actions;
— glass support design (e.g. drainage of infiltrated water in the rebate, prevention of direct contact
between glass support members and glass);
— accuracy of glass support and glass support member dimensions;
— quality of the assembling of glass support members up to a glass support;
— quality of installation of the glass support into or onto the buildings or constructions;
— glass support expansion due to adsorbed moisture from the air or other sources;
— the quality of installation of the glass product into or onto its support.
4.3 Characteristics other than listed in 4.2
Optical and visual characteristics as well as dimensional tolerances shall comply with the relevant part
of this standard, e.g. EN 572-2:2012, EN 572-3:2012, etc.
4.4 Dangerous substances
National regulations on dangerous substances may require verification and declaration on release, and
sometimes content, when construction products covered by this standard are placed on those markets.
In the absence of European harmonized test methods, verification and declaration on release/content
should be done taking into account national provisions in the place of use.
NOTE An informative database covering European and national provisions on dangerous substances is
available at the Construction website on EUROPA accessed through: http://ec.europa.eu/growth/tools-
databases/cp-ds/
5 Assessment and verification of constancy of performance – AVCP
5.1 General
The compliance of basic soda lime silicate glass products with the requirements of this standard and
with the performances declared by the manufacturer in the declaration of performances shall be
demonstrated by:
1) determination of the product type;
2) factory production control by the manufacturer, including product assessment.
This shall include the following:
a) inspection of samples taken at the factory in accordance with a prescribed test plan;
b) initial inspection of the factory and of factory production control;
c) continuous surveillance and assessment of the factory production control.
The manufacturer shall always retain the overall control and shall have the necessary means to take
responsibility for the conformity of the product with its declared performance(s).
NOTE The assignment of tasks to the notified body(ies) and the manufacturer is shown in Tables ZA.3.1 to
ZA.3.3.
5.2 Determination of the product type (see 5.1, 1))
5.2.1 General
All performances related to characteristics included in this standard shall be determined when the
manufacturer intends to declare the respective performances. In addition instead of performing any
actual testing, type testing may make use of:
— generally accepted and/or conventional and/or standardized values, in the Clause 2 referenced
standards, or in publications that are referred to in these standards;
— standardized calculation methods and recognized calculation methods in the Clause 2 referenced
standards, or in publications that are referred to in these standards;
— assessment previously performed in accordance with the provisions of this standard (i.e. historic
data) may be taken into account provided that they were made to the same or a more rigorous test
method, under the same AVCP system (see NOTE 1) on the same product or products of similar
design, construction and functionality, such that the results are applicable to the product in
question;
— assessments previously performed with the previous version of prEN 572-9 remain valid;
— durability / conformity may be assessed indirectly by controlling the production processes
according to this document.
NOTE 1 AVCP systems were called Attestation of Conformity (AoC) systems under the EU Construction
Products Directive (89/106/EEC).
Products CE marked in accordance with appropriate harmonized European specifications may be
presumed to have the performances stated with the CE marking.
NOTE 3 The assignment of tasks to the notified body(ies) and the manufacturer is shown in Tables ZA.3.1 to
ZA.3.3.
When actual testing is required then the type testing (TT) shall be undertaken on a sample
representative of the product taken from direct production or a prototype, any plant and/or line.
For the purposes of assessments, the manufacturer's products may be grouped into families, where it is
considered that the results for one or more characteristics from any one product within the family are
representative for those same characteristics for all products within the same family.
Products may be grouped in different families for different characteristics.
Whenever a change occurs in the raw material or the production process (subject to the definition of
the family), which would change significantly one or more of the characteristics, the type tests shall be
repeated for the appropriate characteristic(s).
5.2.2 Type testing of characteristic’s performances
All characteristics in 4.2.2 that are declared shall be subject to type tests in accordance with 5.2.1.
5.2.3 Test report
The results of the determination of the product type shall be documented in test reports. All test reports
shall be retained by the manufacturer for at least 10 years after the last date of production of the basic
soda lime silicate glass products to which they relate.
5.2.4 Multiple lines/sites
If a manufacturer operates more than one line and/or site, the following can reduce the requirement for
multiple type testing (TT):
a) the manufacturers’ technical file for a product shall specifically cover all applicable sites and/or
lines of the same manufacturer;
b) the manufacturer shall establish a direct relationship between production control, type testing and
on-going internal audit testing;
c) the manufacturer shall have a responsible individual designated to ensure product compliance
based on:
— the operation of a consistent factory production control system on all applicable sites and/or
lines;
— the manufacturer having obtained evidence that shows the product to be consistent, with
respect to both product characteristics and intended use characteristics;
— the manufacturer has in place an internal auditing scheme, including product consistency.
5.3 Factory production control (FPC)
5.3.1 Genera
The manufacturer shall establish, document and maintain an FPC system to ensure that the products
placed on the market comply with the declared performance of the essential characteristics.
The FPC system shall consist of procedures, regular inspections and tests and/or assessments and the
use of the results to control raw and other incoming materials or components, equipment, the
production process and the product.
All elements, requirements and provisions adopted by the manufacturer shall be documented in a
systematic manner in the form of written policies and procedures.
This factory production control system documentation shall ensure a common understanding of the
evaluation of the constancy of performance and enable the achievement of the required product
performances and the effective operation of the production control system to be checked.
5.3.2 Inspection of samples in accordance with the prescribed test plan (see 5.1, 2a))
Factory production control shall be according to Annex A of this document.
NOTE 1 Manufacturers having an FPC system, which complies with EN ISO 9001 standard and which addresses
the provisions of the present European standard are considered as satisfying the FPC requirements of the
Regulation (EU) No 305/2011.
NOTE 2 The assignment of tasks to the notified body(ies) and the manufacturer is shown in Tables ZA.3.1 to
ZA.3.3.
Annex A of this document also summarizes the tests to be carried out by the manufacturer as part of the
production control in the factory, and as further testing of samples taken at the factory in accordance
with a prescribed test plan.
5.4 Initial inspection of factory and of factory production control (see 5.1, 2b))
Initial inspection of factory and of FPC shall be carried out when the production process has been
finalized and in operation. The factory and FPC documentation shall be assessed to verify that the
requirements of Annex A are fulfilled.
During the inspection it shall be verified:
a) that all resources necessary for the achievement of the product characteristics included in this
European standard are in place and correctly implemented and
b) that the FPC-procedures in accordance with the FPC documentation are followed in practice and
c) that the product complies with the product type samples, for which compliance of the product
performance to the declaration of performances has been verified.
All locations where final assembly or at least final testing of the relevant product is performed shall be
assessed to verify that the above conditions a) to c) are in place and implemented. If the FPC system
covers more than one product, production line or production process, and it is verified that the general
requirements are fulfilled when assessing one product, production line or production process, then the
assessment of the general requirements does not need to be repeated when assessing the FPC for
another product, production line or production process.
All assessments and their results shall be documented in the initial inspection report.
The initial inspection of the factory and of the factory production control shall be limited to the
parameters listed in Table 4 in conjunction with Annex A.
NOTE The assignment of tasks to the notified body(ies) and the manufacturer is shown in Tables ZA.3.1 to
ZA.3.3.
Table 4 — Characteristics of interest for the factory production control
Interested parameter related to For details,
Characteristic
the characteristic refer to
- checking incoming materials
Resistance to fire
- chemical composition
Reaction to fire Annex A
- product control after manufacture
External fire performance
- labelling outgoing glass product
Bullet resistance
Explosion resistance
- checking incoming materials
Burglar resistance
- chemical composition
Pendulum body impact resistance
Annex A
- product control after manufacture
Resistance against sudden temperature
changes and temperature differentials - labelling outgoing glass product
Wind, snow, permanent and imposed load
resistance of the glass unit
Direct airborne sound reduction
- checking incoming materials
Thermal properties
- chemical composition
Radiation properties: Annex A
- product control after manufacture
– light transmittance and reflection
- labelling outgoing glass product
– solar energy characteristic
- checking incoming materials
Durability / conformity Annex A
- product control after manufacture
5.5 Continuous surveillance and assessment of the factory production control (see 5.1,
2c))
The continuous surveillance and assessment of the factory production control shall cover the
parameters listed in Table 4 in conjunction with Annex A.
NOTE The assignment of tasks to the notified body(ies) and the manufacturer is shown in Tables ZA.3.1 to
ZA.3.3.
The frequency of production surveillance shall be twice per year for new production facilities or for
facilities that do not already have an established factory production control system in accordance with
this standard.
When assessment of FPC fails to identify major non-conformances during four successive assessments,
the frequency can be reduced to once a year.
When a major non-conformance is recorded, the inspection shall be repeated within two months. The
frequency of production surveillance shall return to, or remain at twice a year. When the repeated
inspection also results in a major non-conformance, then the production shall be subject within two
months to a repeated initial inspection of the factory and of the factory production control together
with a surveillance inspection. When this repeated initial inspection and surveillance inspection also
results in a major non-conformance then the products are considered as no longer conforming to this
standard.
The surveillance of the FPC shall include a review of the FPC test plan(s) and production processes(s)
for each product to determine if any changes have been made since the last assessment or surveillance.
The significance of any changes shall be assessed.
Checks shall be made to ensure that the test plans are still correctly implemented and that the
production equipment is still correctly maintained and calibrated at appropriate time intervals.
The records of tests and measurement made during the production process and to finished products
shall be reviewed to ensure that the values obtained still correspond with those values for the samples
submitted to the determination of the product type and that the correct actions have been taken for
non-compliant products.
5.6 Procedure for modifications
If modifications are made to the product, production process or FPC system that could induce a
significant change (see 3.11) to any of the product characteristics declared according to this standard,
then all the characteristics for which the manufacturer declares performance, which may be affected by
the modification, shall be subject to the determination of the product type, as described in 5.2.
Where relevant, a re-assessment of the factory and of the FPC system shall be performed for those
aspects, which may be affected by the modification.
All assessments and their results shall be documented in a report.
5.7 Pre-production products (e.g. prototypes)
The basic soda lime silicate glass products produced as pre-production products assessed before full
production is established shall be assessed as follows.
For type assessment, the provisions of 5.2.1, apply, together with the following additional provisions:
— the test samples shall be representative of the intended future production and shall be selected by
the manufacturer;
— on request of the manufacturer, the results of the assessment of samples of pre-production
products may be included in a certificate or in test reports issued by the involved third party, as TT.
The ma
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