EN 927-6:2006

Paints and varnishes - Coating materials and coating systems for exterior wood - Part 6: Exposure of wood coatings to artificial weathering using fluorescent UV lamps and water

This part of EN 927 specifies a method for determining the resistance of wood coatings to artificial weathering performed in an apparatus equipped with fluorescent UV lamps, condensation and water spray devices.

Beschichtungsstoffe - Beschichtungsstoffe und Beschichtungssysteme für Holz im Außenbereich - Teil 6: Künstliche Bewitterung von Holzbeschichtungen mit fluoreszierenden UV-Lampen und Wasser

Dieser Teil von EN 927 legt ein Verfahren zum Bestimmen der Beständigkeit von Holzbeschichtungen gegen
künstliche Bewitterung in Geräten mit UV-Leuchtstofflampen, Kondensation und Sprüheinrichtungen für
Wasser fest.

Peintures et vernis - Produits de peinture et systèmes de peinture pour bois en extérieur - Partie 6 : Vieillissement artificiel des revêtements pour bois par exposition à des lampes UV fluorescentes et à de l'eau

La présente partie de l’EN 927 spécifie une méthode permettant de déterminer la résistance des revêtements
pour bois au vieillissement artificiel, dans un appareillage équipé de lampes UV fluorescentes et de dispositifs
de condensation et de pulvérisation d’eau.

Barve in laki - Premazi in premazni sistemi za zunanjo zaščito lesa - 6. del: Izpostava premazov za les umetnemu staranju s fluorescentnimi UV svetilkami in vodo

General Information

• Status: Withdrawn
• Publication Date: 01-Aug-2006
• Withdrawal Date: 09-Oct-2018
• ICS: 87.040 - Paints and varnishes
• Technical Committee: CEN/TC 139 - Paints and varnishes
• Drafting Committee: CEN/TC 139/WG 2 - Coating systems for wood
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 10-Oct-2018
• Ref Project: SIST EN 927-6:2007 - Paints and varnishes - Coating materials and coating systems for exterior wood - Part 6: Exposure of wood coatings to artificial weathering using fluorescent UV lamps and water

Relations

• Replaced By: EN 927-6:2018 - Paints and varnishes - Coating materials and coating systems for exterior wood - Part 6: Exposure of wood coatings to artificial weathering using fluorescent UV lamps and water
• Effective Date: 18-Feb-2015

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2007
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,]SRVWDYDSUHPD]RY]DOHVXPHWQHPXVWDUDQMXVIOXRUHVFHQWQLPL89VYHWLONDPLLQ
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Paints and varnishes - Coating materials and coating systems for exterior wood - Part 6:
Exposure of wood coatings to artificial weathering using fluorescent UV lamps and water
Beschichtungsstoffe - Beschichtungsstoffe und Beschichtungssysteme für Holz im
Außenbereich - Teil 6: Künstliche Bewitterung von Holzbeschichtungen mit
fluoreszierenden UV-Lampen und Wasser
Peintures et vernis - Produits de peinture et systemes de peinture pour bois en extérieur
- Partie 6 : Vieillissement artificiel des revetements pour bois par exposition a des
lampes UV fluorescentes et a de l'eau
Ta slovenski standard je istoveten z: EN 927-6:2006
ICS:
71.100.50 .HPLNDOLMH]D]DãþLWROHVD Wood-protecting chemicals
87.040 Barve in laki Paints and varnishes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 927-6
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2006
ICS 87.040
English Version
Paints and varnishes - Coating materials and coating systems
for exterior wood - Part 6: Exposure of wood coatings to artificial
weathering using fluorescent UV lamps and water
Peintures et vernis - Produits de peinture et systèmes de Beschichtungsstoffe - Beschichtungsstoffe und
peinture pour bois en extérieur - Partie 6 : Vieillissement Beschichtungssysteme für Holz im Außenbereich - Teil 6:
artificiel des revêtements pour bois par exposition à des Künstliche Bewitterung von Holzbeschichtungen mit
lampes UV fluorescentes et à de l'eau fluoreszierenden UV-Lampen und Wasser
This European Standard was approved by CEN on 26 June 2006.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, 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 and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 927-6:2006: E
worldwide for CEN national Members.

Contents
Page
Foreword.3
Introduction .4
1 Scope .5
2 Normative references .5
3 Principle.5
4 Apparatus .6
4.1 Test chamber.6
4.2 Lamps .6
4.3 Device for wetting the test panels.6
4.4 Black panel thermometer.7
4.5 Irradiance control.7
5 Test panels .7
5.1 Wood .7
5.2 Preparation and selection of wood panels .8
5.3 Preparation of coated panels .8
6 Procedure .9
6.1 Examination before exposure .9
6.2 Mounting the test panels .9
6.3 Exposure.9
6.4 Examination of test panels .10
7 Precision.11
8 Expression of results and test report.11
Annex A (normative) Details of test methods.12
A.1 Gloss and change of gloss .12
A.2 Colour and colour change .12
A.3 Blistering .12
A.4 Flaking .12
A.5 Cracking.12
A.6 Chalking.12
A.7 General appearance .13
A.8 Adhesion.13
A.8.1 General.13
A.8.2 Apparatus and material.13
A.8.3 Procedure .13
Annex B (informative) Explanatory notes .14
B.1 Explanation of exposure cycle.14
B.2 Reproducibility.14
B.3 Correlation to natural weathering .14
B.4 Dependency on wood species and substrate.14
B.5 Recommendation of periodical performance assessments .14
Annex C (informative) Test for heartwood in pine .15
Annex D (informative) Water treatment, devices for water purification.16
Annex E (normative) Test for abnormally porous wood.17
Annex F (informative) Alternative procedure for preparation and coating of panels .18
Bibliography .19
Foreword
This document (EN 927-6:2006) has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes”,
the secretariat of which is held by DIN.
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 2007, and conflicting national standards shall be withdrawn at the latest
by February 2007.
EN 927 consists of the following parts under the general title "Paints and varnishes — Coating materials and
coating systems for exterior wood":
 Part 1: Classification and selection;
 Part 2: Performance specification;
 Part 3: Natural weathering test;
 Part 5: Assessment of the liquid water permeability;
 Part 6: Exposure of wood coatings to artificial weathering using fluorescent UV lamps and water.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, 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 and United
Kingdom.
Introduction
Coatings from paints, varnishes and similar materials are weathered in a laboratory in order to simulate ageing
processes which occur from natural weathering. Generally, a valid correlation between ageing during artificial and
natural weathering cannot be expected due to a large number of influencing factors. Certain relationships can only be
expected if the effect of the important parameters (spectral distribution of the irradiance in the photochemically
relevant range, temperature of the specimen, type of wetting, wetting cycle relative humidity) on the coating is known.
However, unlike natural weathering, testing in the laboratory is carried out taking into consideration a limited number
of variables which can be controlled and therefore the results are more reproducible.
1 Scope
This part of EN 927 specifies a method for determining the resistance of wood coatings to artificial weathering
performed in an apparatus equipped with fluorescent UV lamps, condensation and water spray devices.
2 Normative references
The following referenced documents are indispensable for the application 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 927-1, Paints and varnishes — Coating materials and coating systems for exterior wood — Part 1:
Classification and selection
EN ISO 2409, Paints and varnishes — Cross-cut test (ISO 2409:1992)
EN ISO 2808, Paints and varnishes — Determination of film thickness (ISO 2808:1997)
EN ISO 2813, Paints and varnishes — Determination of specular gloss of non-metallic paint films at 20°, 60° and
85° (ISO 2813:1994, including Technical Corrigendum 1:1997)
EN ISO 4628-1:2003, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and
size of defects, and of intensity of uniform changes in appearance — Part 1: General introduction and designation
system (ISO 4628-1:2003)
EN ISO 4628-2, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size
of defects, and of intensity of uniform changes in appearance — Part 2: Assessment of degree of blistering
(ISO 4628-2:2003)
EN ISO 4628-4, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size
of defects, and of intensity of uniform changes in appearance — Part 4: Assessment of degree of cracking
(ISO 4628-4:2003)
EN ISO 4628-5, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size
of defects, and of intensity of uniform changes in appearance — Part 5: Assessment of degree of flaking
(ISO 4628-5:2003)
EN ISO 4628-6, Paints and varnishes — Evaluation of degradation of paint coatings — Designation of intensity,
quantity and size of common types of defect - Part 6: Rating of degree of chalking by tape method
(ISO 4628-6:1990)
prEN ISO 11507:2005, Paints and varnishes — Exposure of coatings to artificial weathering — Exposur
...