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: Not Published
• Public Enquiry End Date: 09-Jul-2025
• 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
• Ref Project: EN 513:2026 - Plastics - Poly(vinyl chloride) (PVC) based profiles - Determination of the resistance to artificial weathering

• 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 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 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
oSIST prEN 513:2025
01-julij-2025
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: prEN 513
ICS:
83.140.99 Drugi izdelki iz gume in Other rubber and plastics
polimernih materialov products
oSIST prEN 513:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 513:2025
oSIST prEN 513:2025
DRAFT
EUROPEAN STANDARD
prEN 513
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2025
ICS 83.140.99 Will supersede 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 draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 249.
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, 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.
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: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 513:2025 E
worldwide for CEN national Members.

oSIST prEN 513:2025
prEN 513:2025 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Symbols and abbreviations . 5
5 Principle . 5
6 Apparatus . 5
7 Test specimens . 5
8 Conditioning . 6
9 Weathering test conditions . 6
10 Procedure. 7
11 Test report . 7
Annex A (informative) Determination of changes in colour and variations of properties
after exposure to xenon-arc radiation . 9
Bibliography . 13

oSIST prEN 513:2025
prEN 513:2025 (E)
European foreword
This document (prEN 513:2025) has been prepared by Technical Committee CEN/TC 249 “Plastics”, the
secretariat of which is held by SIS.
This document is currently submitted to the CEN Enquiry.
This document will supersede 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 CIEDE2000, has been added
as alternative method for the determination of colorimetric coordinates (for uniform colours only)
in A.2.3;
— references have been updated.
oSIST prEN 513:2025
prEN 513:2025 (E)
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, 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, 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]
oSIST prEN 513:2025
prEN 513:2025 (E)
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, submitted to weathering in practice, are exposed to xenon-
arc radiation at specified 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 relation of UV/(UV+VIS) irradiance depends
strongly on the reflection behaviour of the specimens in the test chamber. The reflection of the specimens is
wavelength dependent. The UV/(UV+VIS) relation is not a constant. The relation changes with the reflection
behaviour of the specimens.
NOTE 2 Comparing apparatuses controlled at different wavelength ranges tolerances can be higher due to
the conversion. Typical ranges are (550 ± 120) W/m for a spectral irradiance in the band pass of 300 nm to
800 nm, (60 ± 12) W/m for a spectral irradiance in the band pass of 300 nm to 400 nm and
(0,51 ± 0,08) W/(m nm) for a 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, such that the
longitudinal directions of the test specimens and the profile are the same.
oSIST prEN 513:2025
prEN 513:2025 (E)
Store in the dark the non-exposed reference test specimens.
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 defined:
— method 1 (M);
— method 2 (S).
The test conditions are specified in Table 1.
Table 1 — Weathering test conditions for method 1 (M) and method 2 (S)
Method 1 (M)
UV irradiance Black- White- Relative
standard standard humidity
Broadband Narrowband
temperature temperature
(300 nm to (340 nm)
Exposure period
400 nm)
2 2
W/m W/(m nm)
°C °C %
102 min dry
60 ± 2 0,51 ± 0,02 60 ± 3 40 – 45 65 ± 10
18 min water
60 ± 2 0,51 ± 0,02 — — —
spray
Method 2 (S)
UV irradiance Black- White- Relative
standard standard humidity
Broadband Narrowband
temperature temperature
(300 nm to (340 nm)
Exposure period
400 nm)
2 2
W/m W/(m nm)
°C °C %
114 min dry 60 ± 2 0,51 ± 0,02 65 ± 3 45 – 50 65 ± 10
6 min water spray 60 ± 2 0,51 ± 0,02 — — —
The air temperature and/or the air velocity in the test chamber shall be controlled to a constant
value such that the BST and WST temperatures equal the required values at the end of the dry
period.
NOTE Typical chamber temperature settings are below 38 °C depending on the instrument type.
oSIST prEN 513:2025
prEN 513:2025 (E)
10 Procedure
Put the test specimens in the specimen holders in accordance with Clause 6, e). Select the appropriate
filter arrangement to achieve the spectral irradiance distribution in accordance with
EN ISO 4892-2:2013, method A.
Before placing the spe
...