CEN/TS 16969:2016
(Main)Paints and varnishes - Coating materials and coating systems for exterior wood - Assessment of end grain sealing performance
Paints and varnishes - Coating materials and coating systems for exterior wood - Assessment of end grain sealing performance
This Technical Specification specifies a test method to evaluate the ability of coating materials to seal the end grain of wood against ingress of water.
This procedure is relevant for joinery or wood based cladding materials whose service life can depend on the control of water penetration through the coated end-grain.
Beschichtungsstoffe - Beschichtungsstoffe und Beschichtungssysteme für Holz im Außenbereich - Beurteilung des Leistungsverhaltens von Hirnholzversielgelungen
Diese Technische Spezifikation legt ein Prüfverfahren zum Beurteilen der Leistungsfähigkeit von Beschich¬tungsstoffen zur Versiegelung von Hirnholz gegen das Eindringen von Wasser fest.
Das Verfahren ist für Holzverbindungen oder Holzverkleidungen von Bedeutung, deren Haltbarkeit (Lebensdauer) von der Regulierung der Wasseraufnahme über das beschichtete Hirnholz abhängen kann.
Peintures et vernis - Produits de peinture et systèmes de peinture pour bois en extérieur - Évaluation des performances du colmatage des bois de bout
La présente Spécification technique spécifie une méthode d'essai pour évaluer la capacité des produits de peinture à colmater les bois de bout contre l'entrée d'eau.
Ce mode opératoire est pertinent pour les matériaux de menuiserie ou de bardage à base de bois dont la durée de vie peut dépendre de la maîtrise de la pénétration d'eau dans les bois de bout revêtus.
Barve in laki - Premazi in premazni sistemi za zaščito lesa v zunanji uporabi - Ocenjevanje tesnosti zaščite čelnega prereza
Ta tehnična specifikacija določa preskusno metodo za ocenjevanje zmožnosti premazov za zatesnitev zaščite čelnega prereza lesa pred vdorom vode.
Ta postopek je pomemben za mizarske materiale ali obložne lesne materiale, katerih življenjska doba je lahko odvisna od nadzora prehajanja vode skozi premazane čelne prereze.
General Information
- Status
- Published
- Publication Date
- 26-Jul-2016
- Technical Committee
- CEN/TC 139 - Paints and varnishes
- Drafting Committee
- CEN/TC 139/WG 2 - Coating systems for wood
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 15-Nov-2024
- Completion Date
- 14-Apr-2025
Overview
CEN/TS 16969:2016 - "Paints and varnishes - Coating materials and coating systems for exterior wood - Assessment of end grain sealing performance" specifies a laboratory test method to evaluate how well a coating or end-grain sealer prevents water ingress through the end grain of wood. The procedure quantifies water absorption of coated end-grain surfaces over a 72-hour immersion period and is intended for joinery and wood‑based cladding where control of moisture penetration at cut or exposed ends affects service life.
Key topics and technical requirements
- Test principle: Measure mass gain (water uptake) of coated wood specimens after 72 h immersion with the test end grain submerged; results expressed as grams per square metre (g/m²) per 72 h.
- Specimen: Spruce (Picea abies), defect‑free, straight-grained, normal growth rate; nominal size 45 × 45 × 150 mm; edges rounded and end grain cut to a smooth finish.
- Conditioning: Pre‑conditioning and drying at (20 ± 2) °C and (65 ± 5) % RH until stable mass (difference < 0.2 % between successive weighings).
- Coating application: Apply the coating system to one end grain only, following manufacturer instructions. Record applied mass.
- Sealing of other surfaces: All other faces and the opposite end grain must be sealed with a low‑permeability sealer (e.g., solvent‑free epoxy), overlapping the test face by 2 mm. The sealer’s liquid water permeability shall not exceed 30 g/m² in 72 h (per EN 927‑5).
- Sampling and replication: Use five test specimens per coating and five sealed control specimens; report mean and standard deviation.
- Apparatus & procedure: Controlled conditioning room, deionized water container, balance (0.01 g). Immerse test faces 10 ± 3 mm below water surface; weigh before and after immersion.
- Reporting: Includes product ID, test parameters, wood density, applied coating mass, mean water absorption and standard deviation, deviations from method.
Applications and users
- Who uses it: Coating manufacturers, independent testing laboratories, façade and window manufacturers, specifiers, architects, product certification bodies, and R&D teams focused on exterior wood protection.
- Practical uses:
- Comparative performance testing of end‑grain sealers and coating systems
- Quality control during production
- Supporting product specifications and technical datasheets
- Informing durability and maintenance strategies for joinery and cladding
- Pre‑market evaluation and regulatory/compliance evidence
Related standards
- EN 927‑5:2006 - Assessment of liquid water permeability (referenced sealer performance)
- EN 927‑1:2013 - Classification and selection for exterior wood coatings
- EN ISO 4618 - Paints and varnishes - Terms and definitions
Keywords: end grain sealing, coating materials, exterior wood, water absorption, CEN/TS 16969:2016, paints and varnishes, testing method.
Frequently Asked Questions
CEN/TS 16969:2016 is a technical specification published by the European Committee for Standardization (CEN). Its full title is "Paints and varnishes - Coating materials and coating systems for exterior wood - Assessment of end grain sealing performance". This standard covers: This Technical Specification specifies a test method to evaluate the ability of coating materials to seal the end grain of wood against ingress of water. This procedure is relevant for joinery or wood based cladding materials whose service life can depend on the control of water penetration through the coated end-grain.
This Technical Specification specifies a test method to evaluate the ability of coating materials to seal the end grain of wood against ingress of water. This procedure is relevant for joinery or wood based cladding materials whose service life can depend on the control of water penetration through the coated end-grain.
CEN/TS 16969:2016 is classified under the following ICS (International Classification for Standards) categories: 87.040 - Paints and varnishes. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase CEN/TS 16969:2016 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2017
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2FHQMHYDQMHWHVQRVWL]DãþLWHþHOQHJDSUHUH]D
Paints and varnishes - Coating materials and coating systems for exterior wood -
Assessment of end grain sealing performance
Beschichtungsstoffe - Beschichtungsstoffe und Beschichtungssysteme für Holz im
Außenbereich - Hirnholzversiegelung
Peintures et vernis - Produits de peinture et systèmes de peinture pour bois en extérieur
- Évaluation des performances du colmatage des bois de bout
Ta slovenski standard je istoveten z: CEN/TS 16969:2016
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.
CEN/TS 16969
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
July 2016
TECHNISCHE SPEZIFIKATION
ICS 87.040
English Version
Paints and varnishes - Coating materials and coating
systems for exterior wood - Assessment of end grain
sealing performance
Peintures et vernis - Produits de peinture et systèmes Beschichtungsstoffe - Beschichtungsstoffe und
de peinture pour bois en extérieur - Évaluation des Beschichtungssysteme für Holz im Außenbereich -
performances du colmatage des bois de bout Beurteilung des Leistungsverhaltens von
Hirnholzversielgelungen
This Technical Specification (CEN/TS) was approved by CEN on 12 June 2016 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.
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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 16969:2016 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 4
5 Sample preparation . 5
5.1 Wood . 5
5.2 Preparation of coated and uncoated samples . 6
5.2.1 Wood conditioning . 6
5.2.2 Sample selection . 6
5.2.3 Coating application . 6
5.2.4 Sealing and conditioning . 6
6 Apparatus . 7
7 Procedure. 7
7.1 Pre-Conditioning . 7
7.2 Absorption cycle . 7
7.3 Optional testing of weathered samples . 8
8 Calculation and expression of results . 8
9 Test report . 8
Bibliography . 9
European foreword
This document (CEN/TS 16969:2016) has been prepared by Technical Committee CEN/TC 139 “Paints
and varnishes”, the secretariat of which is held by DIN.
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.
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to announce this Technical Specification: 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, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
1 Scope
This Technical Specification specifies a test method to evaluate the ability of coating materials to seal
the end grain of wood against ingress of water.
This procedure is relevant for joinery or wood based cladding materials whose service life can depend
on the control of water penetration through the coated end-grain.
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
...
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