EN 330:2014
(Main)Wood preservatives - Determination of the relative protective effectiveness of a wood preservative for use under a coating and exposed out-of-ground contact - Field test: L-joint method
Wood preservatives - Determination of the relative protective effectiveness of a wood preservative for use under a coating and exposed out-of-ground contact - Field test: L-joint method
This European Standard specifies a method for determining the relative protective effectiveness against fungal decay of a wood preservative applied to wood in combination with a subsequent surface coating, exposed to the weather and out of contact with the ground. The effectiveness is evaluated relative to a reference wood preservative.
The method is applicable to the testing of commercial or experimental preservatives applied to non-durable timbers by methods appropriate to commercial practice and subsequently coated with a specified coating system. The method is applicable to products and processes used individually or in combination to prevent the development of decay in the wood.
The method is also appropriate for factory finishing systems which include wood protection and wood preservation claims.
Holzschutzmittel - Bestimmung der relativen Wirksamkeit eines Holzschutzmittels zur Anwendung unter einem Anstrich und ohne Erdkontakt - Freilandprüfung: L-Verbindungsmethode
Diese Europäische Norm legt ein Verfahren zur Bestimmung der Wirksamkeit eines Schutzmittels gegen Pilzbefall fest, das an Holz angewendet wird, welches anschließend mit einem Oberflächenanstrich versehen und ohne Erdkontakt der Witterung ausgesetzt wird. Die Wirksamkeit wird im Verhältnis zu einer Behandlung mit einem Bezugsschutzmittel bewertet.
Das Verfahren ist für die Prüfung kommerzieller oder experimenteller Holzschutzmittel anwendbar, die mit für die kommerzielle Praxis geeigneten Verfahren in nicht dauerhafte Hölzer eingebracht und nachfolgend mit einem angegebenen Anstrichsystem überstrichen werden. Das Verfahren ist für Produkte und Verfahren anwendbar, die einzeln oder in Kombination eingesetzt werden, um das Entstehen von Fäulnis im Holz zu verhindern.
Das Verfahren ist ebenfalls für industrielle Beschichtungssysteme anwendbar, die auch Holz schützende Substanzen enthalten.
Produits de préservation du bois - Détermination de l’efficacité protectrice d’un produit de préservation du bois pour emploi sous un revêtement et hors de contact avec le sol - Essai de champ: méthode avec un assemblage en L
La présente Norme européenne spécifie une méthode permettant de déterminer l'efficacité protectrice relative contre la pourriture provoquée par les champignons d'un système de protection comprenant l'application du produit de préservation sur le bois, puis l'application d'un revêtement de surface, le bois étant exposé aux intempéries et hors de contact avec le sol. L'efficacité est évaluée par rapport à un produit de préservation du bois de référence.
La méthode s'applique à l'essai des produits de préservation commerciaux ou expérimentaux appliqués sur des bois non durables par des méthodes appropriées couramment utilisées dans la pratique, puis recouverts d'un système de finition spécifié. La méthode s'applique aux produits et aux procédés mis en oeuvre individuellement ou conjointement afin d'empêcher le développement de la pourriture dans le bois.
La méthode est également appropriée pour les systèmes de finition en usine pour lesquels une protection et une préservation du bois sont revendiquées.
Zaščitna sredstva za les - Terenska preskusna metoda za ugotavljanje relativne preventivne učinkovitosti zaščitnega sredstva za les, ki je pokrit in ni v stiku z zemljo – Terenski preskus: metoda vezi L
Ta evropski standard določa metodo za ugotavljanje relativne preventivne učinkovitosti zaščitnega sredstva pred plesnobo na lesu, katerega površina je bila naknadno premazana in ni v stiku z zemljo. Metoda se uporablja za testiranje komercialnih ali eksperimentalnih zaščitnih sredstev za neobstojni les z metodami, ki ustrezajo poslovni praksi. Les se naknadno prekrije s specifičnim premaznim sistemom. Ta metoda se uporablja za izdelke in postopke, ki se uporabljajo posamezno ali v kombinaciji, za preprečitev razpadanja lesa.
General Information
- Status
- Published
- Publication Date
- 04-Nov-2014
- Withdrawal Date
- 30-May-2015
- Technical Committee
- CEN/TC 38 - Durability of wood and derived materials
- Drafting Committee
- CEN/TC 38/WG 25 - External Factors and Preconditioning
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 19-Nov-2020
- Completion Date
- 23-Sep-2025
- Directive
- 89/106/EEC - Construction products
Relations
- Effective Date
- 08-Jun-2022
Overview
EN 330:2014 (CEN) specifies a standardized field test (L‑joint method) to determine the relative protective effectiveness of a wood preservative when applied beneath a surface coating and exposed outdoors out-of-ground contact (Use Class 3). The method evaluates test preservatives relative to a reference preservative using jointed test assemblies (L‑joints) that are treated, coated and exposed to natural weathering and microbial succession (moulds, blue stain, soft rot and basidiomycetes). Results are compared with reference-treated and untreated control specimens to assess performance.
Key topics and requirements
- Test principle: Treated L‑joint assemblies are coated, exposed outdoors and inspected periodically (visual non‑destructive and destructive sawn section inspections) to detect internal and surface decay. Comparison is made against a reference preservative and untreated controls.
- Reference preservative: Specified composition includes hexabutyldistannoxane (with minimum active fraction noted), hydrocarbon resin and solvent (document gives exact mass‑fraction guidance). Alternatives require evidence of equivalent performance.
- Reference coating: Solvent‑borne alkyd (opaque high gloss/gloss/semi‑gloss) applied to a dry film build of 50 ± 5 µm (2–3 coats) or water‑borne acrylic with 110–120 µm (1–2 coats) measured per ISO 2808 method 4A. Supplier‑specified coating systems may be used when integral to the protection system.
- Wood specimens: Primarily sapwood of Pinus sylvestris (Scots pine) is required; quality limits are specified (e.g., 2.5–8 growth rings per 10 mm; latewood ≤ 30% for Scots pine). Heartwood restrictions apply in joint areas.
- Materials & preparation: End‑seal compounds, treatment processes, conditioning, labeling, weathering racks and exposure site details are specified to ensure reproducible exposure.
- Duration & evaluation: Inspections at least annually; a minimum 5‑year exposure is indicated for many replicates, with recommendation to continue replicates until failure for fuller assessment. Test validity requires inclusion of reference and control L‑joints.
Applications and who uses it
- Wood preservative manufacturers for product development and comparative performance data.
- Coating and factory finishing suppliers when making combined protection/preservation claims.
- Independent test laboratories and certification bodies conducting durability testing to support compliance and marketing claims.
- Specifiers, architects and timber product manufacturers evaluating long‑term performance for exterior joinery and cladding.
- Regulatory and procurement teams requiring standardized comparative data for tendering or registration.
Related standards
- EN 335 (Use classes: definitions) - links performance to intended service class (Use Class 3).
- EN 1001‑2 (Durability terminology) - referenced for terms and definitions.
- Published by CEN; full procedural details, reporting requirements and safety advice are included within EN 330:2014.
Frequently Asked Questions
EN 330:2014 is a standard published by the European Committee for Standardization (CEN). Its full title is "Wood preservatives - Determination of the relative protective effectiveness of a wood preservative for use under a coating and exposed out-of-ground contact - Field test: L-joint method". This standard covers: This European Standard specifies a method for determining the relative protective effectiveness against fungal decay of a wood preservative applied to wood in combination with a subsequent surface coating, exposed to the weather and out of contact with the ground. The effectiveness is evaluated relative to a reference wood preservative. The method is applicable to the testing of commercial or experimental preservatives applied to non-durable timbers by methods appropriate to commercial practice and subsequently coated with a specified coating system. The method is applicable to products and processes used individually or in combination to prevent the development of decay in the wood. The method is also appropriate for factory finishing systems which include wood protection and wood preservation claims.
This European Standard specifies a method for determining the relative protective effectiveness against fungal decay of a wood preservative applied to wood in combination with a subsequent surface coating, exposed to the weather and out of contact with the ground. The effectiveness is evaluated relative to a reference wood preservative. The method is applicable to the testing of commercial or experimental preservatives applied to non-durable timbers by methods appropriate to commercial practice and subsequently coated with a specified coating system. The method is applicable to products and processes used individually or in combination to prevent the development of decay in the wood. The method is also appropriate for factory finishing systems which include wood protection and wood preservation claims.
EN 330:2014 is classified under the following ICS (International Classification for Standards) categories: 71.100.50 - Wood-protecting chemicals. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 330:2014 has the following relationships with other standards: It is inter standard links to EN 330:1993. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 330:2014 is associated with the following European legislation: EU Directives/Regulations: 89/106/EEC. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Holzschutzmittel - Bestimmung der relativen Wirksamkeit eines Holzschutzmittels zur Anwendung unter einem Anstrich und ohne Erdkontakt - Freilandprüfung: L-VerbindungsmethodeProduits de préservation du bois - Détermination de l’efficacité protectrice d’un produit de préservation du bois pour employ un revetment et hors de contact avec le sol - Essais de champ: méthode avec un esemblage en LWood preservatives - Determination of the relative protective effectiveness of a wood preservative for use under a coating and exposed out-of-ground contact - Field test: L-joint method71.100.50Wood-protecting chemicalsICS:Ta slovenski standard je istoveten z:EN 330:2014SIST EN 330:2015en,fr,de01-januar-2015SIST EN 330:2015SLOVENSKI
STANDARDSIST EN 330:20041DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 330
November 2014 ICS 71.100.50 Supersedes EN 330:1993English Version
Wood preservatives - Determination of the relative protective effectiveness of a wood preservative for use under a coating and exposed out-of-ground contact - Field test: L-joint method
Produits de préservation du bois - Détermination de l'efficacité protectrice d'un produit de préservation du bois pour emploi sous un revêtement et hors de contact avec le sol - Essai de champ: méthode avec un assemblage en L
Holzschutzmittel - Bestimmung der relativen Wirksamkeit eines Holzschutzmittels zur Anwendung unter einem Anstrich und ohne Erdkontakt - Freilandprüfung: L-Verbindungsmethode This European Standard was approved by CEN on 30 August 2014.
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, 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 © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 330:2014 ESIST EN 330:2015
Flow chart for the preparation and exposure of L-joints for test . 19 Annex B (informative)
Information on treatment processes, reference and alternative preservatives and materials . 20 Annex C (informative)
Example of a Test Report. 22 Annex D (informative)
Environmental, health and safety precautions within chemical / biological laboratory . 24 Bibliography . 25
minimum mass fraction of 1 % (mass fraction 95 % active ingredient); — Aliphatic neutral hydrocarbon resin mass fraction of 5 %; — Hydrocarbon solvent mass fraction of 94 %, (distillation range 160 °C to 215 °C; aromatic content mass fraction < 17 %). If an alternative wood preservative product is used the concentration of the product used should provide a performance equivalent to the specified concentration of the reference wood preservatives referred to in this standard. Evidence of equivalence shall be recorded in the test report. NOTE See informative Annex B on alternative reference preservatives. 5.4 Wood test specimens 5.4.1 Wood species Sapwood of Pinus sylvestris (Scots Pine, redwood) shall be used. Some heartwood is permitted in the mortise member but none in the joint area (5.4.3). SIST EN 330:2015
Key 1 heartwood permitted 2 label position 3 mortise member 4 tenon member (note rounding of the longitudinal edges) Tolerances in the joint: a)
c) 13 ± 1 d) f)
b) 12 ± 1 e) The two members shall provide a firm but not tight push-fit. Figure 1 — The L-joint SIST EN 330:2015
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제목: EN 330:2014 - 목재 방부제 - 코팅 및 지면 외부에 노출되는 용도로 사용되는 목재 방부제의 상대적인 보호 효과 결정 - 현장 시험: L-조인트 방법 내용: 이 유럽 표준은 지면과 접촉되지 않은 적에 날씨에 노출되는 목재에 적용되는 목재 방부제의 침균에 대한 상대적인 보호 효과를 결정하는 방법을 규정합니다. 이 효과는 참고 목재 방부제를 기준으로 평가됩니다. 이 방법은 상업적 또는 실험적 방부제가 기업 실천에 적합한 방법으로 비내구성 목재에 적용되고 그 다음 표면 코팅으로 처리될 때, 상대적으로 보호 효과를 평가할 수 있습니다. 이 방법은 목재 내의 부식 발생을 예방하기 위해 개별적으로 또는 복합적으로 사용되는 제품 및 공정에도 적용됩니다. 이 방법은 또한 목재 방호 및 보존 주장을 포함하는 공장 마감 시스템에도 적합합니다.
記事のタイトル：EN 330：2014 - 木材防腐剤 - コーティング下や接地外の露出用途での木材防腐剤の相対的な保護効果の決定 - 現場テスト：L-ジョイント方法 記事内容：この欧州規格は、風雨にさらされ、地面と接触しない状態で木材に適用される木材防腐剤のカビ腐敗に対する相対的な保護効果を決定する方法を規定しています。この効果は、基準となる木材防腐剤と比較して評価されます。 この方法は、商業的な使用方法に適した方法を用いて非耐久性の木材に適用される商業的なまたは実験的な防腐剤のテストに適用できます。また、木材の腐敗を防ぐために個別または組み合わせて使用される製品やプロセスにも適用できます。 この方法は、木材の保護と保存をうたった工場仕上げシステムにも適しています。
The article explains that EN 330:2014 is a European Standard that outlines a method for determining the effectiveness of wood preservatives in protecting wood from fungal decay. The method specifically evaluates the effectiveness of preservatives when applied to wood and combined with a surface coating. The wood is then exposed to weather conditions and kept out of contact with the ground. The effectiveness is assessed in comparison to a reference wood preservative. The method is applicable to testing both commercial and experimental preservatives applied to non-durable timbers, using methods commonly used in commercial practice. It is also suitable for evaluating products and processes used to prevent decay in wood, as well as factory finishing systems that make wood protection and preservation claims.
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