SIST EN 513:2026

• Abstract:

  This document specifies a method for exposing specimens made from poly(vinyl chloride) (PVC) based profiles to xenon-arc radiation, in order to assess changes in characteristics.; It is applicable to PVC based profiles including those covered with foil, paint, print, thermo-laminated foils or coextruded.; NOTE The determination of changes in colour and variations of properties after exposure of PVC based profiles to xenon-arc radiation is described in an informative Annex A.

• Status: Published
• Public Enquiry End Date: 09-Jul-2025
• Publication Date: 20-Aug-2026
• ICS: 83.140.99 - Other rubber and plastics products
• Technical Committee: IPMA - Polimer materials and products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 13-Aug-2026
• Due Date: 18-Oct-2026
• Completion Date: 21-Aug-2026
• Ref Project: EN 513:2026 - Plastics - Poly(vinyl chloride) (PVC) based profiles - Determination of the resistance to artificial weathering

• Refers: SIST EN ISO 4892-2:2013 - Plastics - Methods of exposure to laboratory light sources - Part 2: Xenon-arc lamps (ISO 4892-2:2013)
• Effective Date: 02-Sep-2026
• Referred By: SIST EN 14471:2006 - Chimneys - System chimneys with plastic flue liners - Requirements and test methods
• Effective Date: 12-Aug-2026
• Referred By: SIST EN 89:2015 - Gas-fired storage water heaters for the production of domestic hot water
• Effective Date: 12-Aug-2026
• Referred By: SIST EN 12608:2003 - Unplasticized polyvinylchloride (PVC-U) profiles for the fabrication of windows and doors - Classification, requirements and test methods
• Effective Date: 12-Aug-2026
• Referred By: SIST EN 12608-1:2016 - Unplasticized poly(vinyl chloride) (PVC-U) profiles for the fabrication of windows and doors - Classification, requirements and test methods - Part 1: Non-coated PVC-U profiles with light coloured surfaces
• Effective Date: 12-Aug-2026
• Referred By: SIST EN 607:2023 - Eaves gutters and fittings made of PVC-U - Definitions, requirements and testing
• Effective Date: 12-Aug-2026
• Referred By: SIST EN 607:2005 - Eaves gutters and fittings made of PVC-U - Definitions, requirements and testing
• Effective Date: 12-Aug-2026
• Referred By: SIST EN 26:2015 - Gas-fired instantaneous water heaters for the production of domestic hot water
• Effective Date: 12-Aug-2026
• Referred By: SIST EN 13245-1:2026 - Plastics - Unplasticized poly(vinyl chloride) (PVC-U) profiles for building applications - Part 1: Designation of PVC-U profiles
• Effective Date: 12-Aug-2026
• Referred By: SIST EN 13245-3:2026 - Plastics - Unplasticized poly(vinyl chloride) (PVC-U) profiles for building applications - Part 3: Designation of PVC-UE profiles
• Effective Date: 12-Aug-2026
• Referred By: SIST EN 12608-2:2023 - Unplasticized poly(vinyl chloride) (PVC-U) profiles for the fabrication of windows and doors - Classification, requirements and test methods - Part 2: PVC-U profiles covered with foils bonded with adhesives
• Effective Date: 12-Aug-2026
• Referred By: SIST EN 12608-1:2016+A1:2020 - Unplasticized poly(vinyl chloride) (PVC-U) profiles for the fabrication of windows and doors - Classification, requirements and test methods - Part 1: Non-coated PVC-U profiles with light coloured surfaces
• Effective Date: 12-Aug-2026
• Revises: SIST EN 513:2019 - Plastics - Poly(vinyl chloride) (PVC) based profiles - Determination of the resistance to artificial weathering
• Effective Date: 11-Dec-2024

Overview

SIST EN 513:2026 defines a standard procedure for determining the resistance of poly(vinyl chloride) (PVC) based profiles to artificial weathering using xenon-arc radiation. Developed by the Slovenian Institute for Standardization (SIST), this standard provides a method to assess changes in characteristics, such as colour and mechanical properties, of PVC profiles after exposure to simulated sunlight conditions. The test applies to all types of PVC profiles, including those covered with decorative foils, paints, prints, thermo-laminated foils, or coextruded layers.

With the increasing use of PVC profiles in construction and outdoor applications, understanding the weathering performance is vital for durability, aesthetics, and compliance with product standards.

Key Topics

• Scope: Specifies exposure of PVC-based profiles to xenon-arc light for evaluation of weathering resistance. Suitable for unplasticized (PVC-U) and expanded (PVC-UE) profiles.
• Test Procedures: Details apparatus requirements, specimen preparation, exposure cycles, and evaluation of specimens pre- and post-exposure.
• Weathering Conditions: Defines two primary methods (method 1 and method 2) with specific cycles of UV exposure and water spray.
• Assessment Criteria: Outlines procedures for assessing changes in colour using grey scale and colorimetric methods, and for measuring variations in impact strength, tensile impact, flexural properties, chalking, and coating adhesion.
• Reporting: Specifies required elements for comprehensive test reports, including method used, profile identification, exposure conditions, and deviations from the standard.

Applications

SIST EN 513:2026 is essential for:

• Manufacturers of PVC profiles: To validate the UV stability and weathering resistance of windows, doors, and cladding products, ensuring long-term quality and customer satisfaction.
• Testing laboratories: For conducting reliable, standardized artificial weathering tests on PVC profiles as part of product certification, quality control, and research.
• Architects and specifiers: To reference standardized performance criteria for PVC profiles in tender documents and technical specifications for construction projects.
• Regulatory compliance: Assists in meeting European regulatory requirements for durability and safety of building materials used in external applications.

Benefits

• Consistent evaluation of PVC profiles' resistance to artificial weathering.
• Supports product development and optimization for enhanced outdoor durability.
• Provides objective assessment criteria for colour stability and mechanical property retention after accelerated aging.

Related Standards

Several other standards are referenced and complement SIST EN 513:2026 for a comprehensive approach to plastics weathering performance:

• EN ISO 4892-1 & EN ISO 4892-2: General guidance and specific methods for exposure to laboratory light sources, including xenon-arc lamps.
• ISO 9370: Guidance on instrumental determination of radiant exposure in weathering tests.
• EN ISO 105 series: Standards for assessment of colour fastness using grey scales.
• EN ISO/CIE 11664 series: Colorimetry standards defining measurement and calculation of colour space and differences.
• EN ISO 179-1, EN ISO 178, EN ISO 8256: Mechanical property tests including impact and flexural properties.
• EN ISO 4628-6, EN ISO 2409, EN 17271: Evaluation of surface properties such as chalking, coating adhesion, and peel strength.

Conclusion

SIST EN 513:2026 establishes a clear, reproducible method for assessing the artificial weathering resistance of PVC-based profiles, ensuring that products meet high standards for performance and durability in outdoor environments. This standard plays a key role in the quality assurance and regulatory compliance of construction materials, ultimately supporting safer and more reliable building products throughout their lifecycle.

Key terms: PVC weathering resistance, artificial weathering, xenon-arc exposure, colour stability, mechanical property retention, PVC profiles, building materials testing.

SLOVENSKI STANDARD
01-oktober-2026
Polimerni materiali - Profili na osnovi polivinilklorida (PVC) - Ugotavljanje
odpornosti proti vremenskim vplivom s pospešenim staranjem
Plastics - Poly(vinyl chloride) (PVC) based profiles - Determination of the resistance to
artificial weathering
Kunststoffe - Profile auf Basis von Polyvinylchlorid (PVC) - Bestimmung der
Beständigkeit gegenüber künstlicher Bewitterung
Plastiques - Profilés à base de poly(chlorure de vinyle) (PVC) - Détermination de la
résistance au vieillissement artificiel
Ta slovenski standard je istoveten z: EN 513:2026
ICS:
83.140.99 Drugi izdelki iz gume in Other rubber and plastics
polimernih materialov products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 513
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2026
EUROPÄISCHE NORM
ICS 83.140.99 Supersedes EN 513:2018
English Version
Plastics - Poly(vinyl chloride) (PVC) based profiles -
Determination of the resistance to artificial weathering
Plastiques - Profilés à base de poly(chlorure de vinyle) Kunststoffe - Profile auf Basis von Polyvinylchlorid
(PVC) - Détermination de la résistance au (PVC) - Bestimmung der Beständigkeit gegenüber
vieillissement artificiel künstlicher Bewitterung
This European Standard was approved by CEN on 5 July 2026.

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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 513:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Symbols and abbreviations . 4
5 Principle . 5
6 Apparatus . 5
7 Test specimens . 5
8 Conditioning . 5
9 Weathering test conditions . 6
10 Procedure. 8
11 Test report . 8
Annex A (informative) Determination of changes in colour and variations of properties after
exposure to xenon-arc radiation . 10
A.1 General . 10
A.2 Determination of visual change in colour . 10
A.2.1 Test specimens . 10
A.2.2 Grey scale . 10
A.2.3 Determination of colorimetric coordinates . 10
A.3 Determination of Charpy impact strength . 11
A.3.1 PVC-U profiles . 11
A.3.2 PVC-UE profiles . 11
A.4 Determination of the tensile impact . 12
A.5 Determination of flexural properties . 12
A.6 Determination of chalking . 12
A.7 Determination of adhesion of a coating . 12
A.8 Determination of peel strength . 12
A.9 Determination of falling weight impact resistance (only applicable for PVC UE
profiles) . 13
Bibliography . 14

European foreword
This document (EN 513:2026) has been prepared by Technical Committee CEN/TC 249 “Plastics”, the
secretariat of which is held by SIS.
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 February 2026, and conflicting national standards shall
be withdrawn at the latest by February 2026.
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 513:2018.
This document includes the following significant technical changes with respect to EN 513:2018:
— the type of specimen holder (backed or open framed) has been added to the test report;
— the colour measurement according to EN ISO/CIE 11664-6, calculating the CIEDE2000, has been
added as an alternative method for determining the colorimetric coordinates (for uniform colours
only) in A.2.3;
— references have been updated.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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.
1 Scope
This document specifies a method for exposing specimens made from poly(vinyl chloride) (PVC) based
profiles to xenon-arc radiation, in order to assess changes in characteristics.
It is applicable to PVC based profiles including those covered with foil, paint, print, thermo-laminated
foils or coextruded.
NOTE The determination of changes in colour and variations of properties after exposure of PVC based profiles
to xenon-arc radiation is described in an informative Annex A.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN ISO 472, Plastics — Vocabulary (ISO 472)
EN ISO 4892-1:2024, Plastics — Methods of exposure to laboratory light sources — Part 1: General
guidance and requirements (ISO 4892-1:2024)
EN ISO 4892-2:2013, Plastics — Methods of exposure to laboratory light sources — Part 2: Xenon-arc lamps
(ISO 4892-2:2013)
ISO 9370:2017, Plastics — Instrumental determination of radiant exposure in weathering tests — General
guidance and basic test method
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 472 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
radiant exposure
H
time integral of irradiance
Note 1 to entry: measured in joules per square metre (J/m ).
[SOURCE: ISO 9370:2017, 3.27]
4 Symbols and abbreviations
For the purposes of this document, the following symbols and abbreviations apply.
PVC-U unplasticized poly(vinyl chloride)
PVC-UE expanded unplasticized poly(vinyl chloride)
BST black-standard thermometer
WST white-standard thermometer
5 Principle
Specimens taken from the surface of a profile, subjected to weathering in practice, shall be exposed to
xenon-arc radiation under specified conditions of irradiance, black and white standard temperatures,
relative humidity and spray cycle.
After the exposure, the changes in characteristics of the specimens are determined.
6 Apparatus
The apparatus shall comply with EN ISO 4892-1 and EN ISO 4892-2 and shall include:
a) a xenon-arc lamp in accordance with method A of EN ISO 4892-2:2013 with a spectral irradiance in
the band pass of 300 nm to 800 nm of (550 ± 55) W/m or a spectral irradiance in the band pass of
2 2
300 nm to 400 nm of (60 ± 2) W/m or a spectral irradiance at 340 nm of (0,51 ± 0,02) W/(m nm).
NOTE 1 In apparatuses with rotating specimen holders, the UV/(UV+VIS) irradiance ratio depends strongly
on the wavelength-dependent reflection behaviour of the specimens in the test chamber. This ratio is not
constant and varies with the reflective properties of the specimens.
NOTE 2 When comparing apparatuses controlled at different wavelength ranges, higher tolerances may be
accepted due to the conversion. Typical range is (550 ± 120) W/m for spectral irradiance in the band pass of
2 2
300 nm to 800 nm, (60 ± 12) W/m for the band pass of 300 nm to 400 nm and (0,51 ± 0,08) W/(m nm) for
spectral irradiance at 340 nm.
b) a black-standard thermometer (BST) in accordance with EN ISO 4892-1:2024, 5.2, and
EN ISO 4892-2:2013, 6.2.1, and a means of recording temperatures during one cycle;
c) a white-standard thermometer (WST) in accordance with EN ISO 4892-1:2024, 5.2, and
EN ISO 4892-2:2013, 6.2.1, and a means of recording temperatures during one cycle;
d) a device to determine the radiant exposures stated in a) according to ISO 9370;
e) specimen holders in the form of an open frame, leaving the back of the specimen exposed according
to EN ISO 4892-2:2013, 4.6.
7 Test specimens
The number of test specimens shall be as specified in the referring standard.
NOTE Additional details regarding test specimens for determining changes in colour and variations of
properties after exposure of PVC based profiles to xenon-arc radiation are given in Annex A.
The test specimens shall be taken from the surface of the profile exposed to UV radiation, ensuring that
the longitudinal direction of the test specimens corresponds to that of the profile.
The non-exposed reference test specimens shall be stored in the dark.
8 Conditioning
Unless otherwise specified, conditioning is not required before an exposure to laboratory radiation
sources.
NOTE Additional details regarding conditioning before determining changes in colour and variations of
properties after exposure of PVC based profiles to xenon-arc radiation are given in Annex A.
9 Weathering test conditions
Two different weathering test conditions of exposure are specified:
— method 1 for moderate clima
...