EN 15228:2009
(Main)Structural timber - Structural timber preservative treated against biological attack
Structural timber - Structural timber preservative treated against biological attack
This European Standard specifies general requirements for structural timber that has been treated with preservatives against biological attack.
This European Standard also specifies requirements for the evaluation of conformity and marking of preservative treated timber products when they are placed on the market.
Treatments, which include a biocide, are covered by this standard.
It does not provide details of which preservative treatments are necessary for a particular type of structural timber product to achieve a required service life, as regional climatic differences and prevalent biological agents would need to be taken into account for that purpose.
This European Standard does not cover any subsequent treatment which may be required for structural timber products which have been machined, bored or planed after the CE marking has been applied.
This standard does not cover the qualification of preservation products used to treat structural timber.
Bauholz - Bauholz für tragende Zwecke mit Schutzmittelbehandlung gegen biologischen Befall
Diese Europäische Norm legt allgemeine Anforderungen an Bauholz für tragende Zwecke, das mit Holzschutzmitteln
gegen biologischen Befall behandelt wurde, fest.
Ferner legt diese Europäische Norm Anforderungen an die Konformitätsbewertung und Kennzeichnung von
Holzprodukten fest, die mit Holzschutzmitteln gegen biologischen Befall behandelt wurden, und auf den Markt
gebracht werden sollen.
Diese Norm behandelt Schutzmittelbehandlungen.
Sie enthält keine Einzelheiten, welche Schutzmittelbehandlungen für eine besondere Art von Bauholzprodukten
zum Erzielen einer festgelegten Nutzungsdauer erforderlich sind, da dazu die unterschiedlichen
regionalen klimatischen Bedingungen und die jeweils vorherrschenden Schädlinge berücksichtigt werden
müssten.
Diese Europäische Norm behandelt nicht Nachbehandlungen, die für Bauholzprodukte erforderlich sein
können, wenn diese bearbeitet, mit Bohrungen versehen oder gehobelt wurden, nachdem die CE-Kennzeichnung
aufgebracht wurde.
Diese Norm gilt nicht für die Qualifizierung der für die Bauholzprodukte angewendeten Holzschutzmittel.
Bois de structure - Bois de structure traité avec un produit de préservation contre les attaques biologiques
La présente norme européenne spécifie les exigences générales relatives au bois de structure qui a été traité
par des produits de préservation contre les attaques biologiques.
La présente norme européenne spécifie également les exigences relatives à la conformité et au marquage
des produits en bois traités avec un produit de préservation, lorsque ceux-ci sont placés sur le marché.
Les traitements incluant un produit biocide sont couverts par la présente norme.
Elle ne donne pas de détails sur quels traitements de préservation sont nécessaires pour une type particulier
de produit de structure en bois pour atteindre une durée de vie en service prescrite, dans la mesure où les
différences climatiques régionales et les agents biologiques dominants doivent être pris en compte pour
atteindre cet objectif.
La présente norme européenne ne couvre pas les traitements complémentaires pouvant être requis pour des
produits de structure en bois ayant été usinés, mortaisés ou rabotés après application du marquage CE .
La présente norme européenne ne couvre pas la qualification des produits de traitement utilisés pour traiter le
bois de structure.
Konstrukcijski les - Konstrukcijski les, zaščiten pred biološkimi vplivi
General Information
- Status
- Published
- Publication Date
- 24-Mar-2009
- Withdrawal Date
- 29-Sep-2009
- Technical Committee
- CEN/TC 124 - Timber structures
- Drafting Committee
- CEN/TC 124/WG 2 - Solid timber
- Current Stage
- 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
- Start Date
- 02-Dec-2025
- Completion Date
- 02-Dec-2025
- Directive
- 89/106/EEC - Construction products
Overview
EN 15228:2009 is a European Standard developed by CEN that sets general requirements for structural timber treated with preservatives to protect against biological attack. This standard covers timber used in load-bearing applications where durability against biological degradation, such as fungi, insects, and other organisms, is essential. It specifies criteria for treatment penetration and retention, conformity evaluation, and marking requirements, ensuring treated timber products placed on the market meet consistent safety and performance standards.
Preservative treatments referenced in EN 15228:2009 include those containing biocides designed to extend the service life of structural timber. However, the standard does not prescribe specific treatments for individual timber types or climatic conditions. Additionally, it excludes processes applied after CE marking such as machining or boring, as well as the qualification of the preservation products themselves.
Key Topics
- Timber Requirements: Treated timber must comply with strength grading standards, particularly EN 14081-1, to ensure suitability for structural use.
- Treatment Penetration and Retention: The depth of preservative penetration and its retention level must be declared and conform to penetration classes defined in EN 351-1. The minimum preservation retention is determined by national regulations or hazard class per EN 599-1.
- Reaction to Fire: Treatment impact on timber’s fire performance is assessed, with products adding more than 2% organic material by mass requiring fire reaction classification according to EN 13501-1. Testing methods and mounting procedures according to EN 13823 are specified.
- Mechanical Properties: The standard prescribes procedures to ensure that preservative treatments do not adversely affect timber’s strength and stiffness. For treatments potentially influencing mechanical properties, comparative testing between treated and untreated samples must be performed.
- Dangerous Substances: Limits on hazardous chemicals such as pentachlorophenol (PCP) are set, with testing required if PCP is used. Marking must clearly indicate if PCP content exceeds established thresholds. Other biocidal substances are subject to consideration under relevant EU directives.
- Conformity Evaluation: Compliance is demonstrated through initial type testing and factory production control. Testing includes verification of treatment penetration, retention, reaction to fire, and mechanical properties following accredited procedures.
Applications
EN 15228:2009 is essential for producers, suppliers, and specifiers of preservative treated structural timber used in construction and civil engineering projects across Europe. Its application ensures that treated timber products:
- Deliver enhanced durability against biological degradation, prolonging structural life.
- Comply with EU market requirements including safety, environmental, and performance regulations.
- Can be reliably identified and traced through standardized marking.
- Will meet fire reaction classifications critical for building safety codes.
- Maintain necessary mechanical performance for structural applications.
Typical uses include timber beams, joists, rafters, and other load-bearing components exposed to conditions conducive to biological attack, such as outdoor environments or areas with high humidity.
Related Standards
EN 15228:2009 references and complements several other European standards essential for treated structural timber performance and evaluation:
- EN 14081-1 – Strength grading of structural timber with rectangular cross-section.
- EN 351-1 & EN 351-2 – Classification of preservative penetration and retention; sampling methods.
- EN 599-1 – Specifications for wood preservatives aligned with hazard classes.
- EN 13501-1 & EN 13823 – Fire classification and testing protocols.
- EN 408 & EN 384 – Test methods for mechanical properties of timber.
- CEN/TR 14823 – Analytical methods for determination of pentachlorophenol content.
- ISO 9001 – Relevant for factory production control quality management.
Together, these standards provide a framework ensuring treated structural timber is fit for purpose, safe, and compliant with regulatory demands.
Keywords: EN 15228:2009, structural timber, preservative treated timber, biological attack protection, timber preservation, timber durability, CEN standard, timber fire reaction, preservative retention, timber strength and stiffness, pentachlorophenol limits, conformity evaluation, timber treatment marking, European timber standards.
Frequently Asked Questions
EN 15228:2009 is a standard published by the European Committee for Standardization (CEN). Its full title is "Structural timber - Structural timber preservative treated against biological attack". This standard covers: This European Standard specifies general requirements for structural timber that has been treated with preservatives against biological attack. This European Standard also specifies requirements for the evaluation of conformity and marking of preservative treated timber products when they are placed on the market. Treatments, which include a biocide, are covered by this standard. It does not provide details of which preservative treatments are necessary for a particular type of structural timber product to achieve a required service life, as regional climatic differences and prevalent biological agents would need to be taken into account for that purpose. This European Standard does not cover any subsequent treatment which may be required for structural timber products which have been machined, bored or planed after the CE marking has been applied. This standard does not cover the qualification of preservation products used to treat structural timber.
This European Standard specifies general requirements for structural timber that has been treated with preservatives against biological attack. This European Standard also specifies requirements for the evaluation of conformity and marking of preservative treated timber products when they are placed on the market. Treatments, which include a biocide, are covered by this standard. It does not provide details of which preservative treatments are necessary for a particular type of structural timber product to achieve a required service life, as regional climatic differences and prevalent biological agents would need to be taken into account for that purpose. This European Standard does not cover any subsequent treatment which may be required for structural timber products which have been machined, bored or planed after the CE marking has been applied. This standard does not cover the qualification of preservation products used to treat structural timber.
EN 15228:2009 is classified under the following ICS (International Classification for Standards) categories: 71.100.50 - Wood-protecting chemicals; 79.040 - Wood, sawlogs and sawn timber. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 15228:2009 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC; Standardization Mandates: M/112. 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.Bauholz - Bauholz für tragende Zwecke mit Schutzmittelbehandlung gegen biologischen BefallBois de structure - Bois de structure traité avec un produit de préservation contre les attaques biologiquesStructural timber - Structural timber preservative treated against biological attack79.040Les, hlodovina in žagan lesWood, sawlogs and sawn timberICS:Ta slovenski standard je istoveten z:EN 15228:2009SIST EN 15228:2009en,fr,de01-julij-2009SIST EN 15228:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15228March 2009ICS 71.100.50; 79.040 English VersionStructural timber - Structural timber preservative treated againstbiological attackBois de structure - Bois de structure traité avec un produitde préservation contre les attaques biologiquesBauholz - Bauholz für tragende Zwecke mitSchutzmittelbehandlung gegen biologischen BefallThis European Standard was approved by CEN on 7 February 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15228:2009: ESIST EN 15228:2009
Preservative treatment not affecting
strength and stiffness properties of treated timber . 11 A.1 General . 11 A.2 Preservatives types . 11 Bibliography . 12
...
SIST EN 15228:2009は、構造用木材および生物攻撃に対する防腐処理が施された構造用木材に関する一般的な要件を規定した欧州標準です。この標準は、構造用木材が市場に出る際の防腐処理された木材製品の適合性評価および表示に関する要件も示しています。これにより、木材製品の品質と安全性が確保されることが期待されます。 この標準の強みは、構造用木材に対する生物攻撃に対処するための防腐処理の必要性を明確に定義し、様々な地域の気候差や優勢な生物因子を考慮に入れた柔軟性を持つ点です。これにより、使用される防腐処理の種類は製品別に異なる可能性がありますが、標準はそれを評価するための枠組みを提供します。 さらに、SIST EN 15228:2009は、防腐処理された木材製品の市場での適合性を示すための適切な評価と表示に関わる規範を提供しており、無駄のない流通管理を促進します。ただし、この標準は防腐処理の具体的な内容や、CEマーキング後に加工された構造用木材製品への追加処理には触れていないため、その点に留意する必要があります。 この欧州標準は、構造用木材の保護を目的とした業界のニーズに応える重要な基準であり、建築資材の選定と使用において信頼性と持続可能性を高める役割を果たします。
The EN 15228:2009 is a pivotal European Standard that outlines the essential requirements for structural timber specifically treated with preservatives to combat biological attacks. This standard serves a broad scope, ensuring that structural timber products are appropriately evaluated for conformity and are marked accurately when introduced to the market, thus maintaining a high level of quality assurance. One of the strengths of this standard lies in its comprehensive approach to the evaluation of preservative treatments. By defining general requirements, it sets a solid foundation for the industry while allowing for flexibility in application, taking into account the variations that arise from different regional climates and biological threats. This adaptability is crucial, as it acknowledges the need for different treatment solutions depending on the specific environmental conditions that the timber will be exposed to. Moreover, EN 15228:2009 provides valuable guidance regarding the treatments involving biocides, ensuring that relevant safety and effectiveness protocols are followed. However, it is important to note that the standard does not prescribe specific preservative treatments needed for particular structural timber products aimed at achieving desired service lives, recognizing that these choices must align with local ecological factors. While the standard effectively lays out the groundwork for marked products, it does not extend to the subsequent treatments necessary for structural timber that has undergone additional machining processes post-CE marking. This clear demarcation emphasizes the standard's focus on initial treatments and product evaluation rather than ongoing maintenance or re-treatment protocols. In summary, EN 15228:2009 is highly relevant for industry professionals dealing with structural timber treatment. Its clarity and scope in defining requirements for preservative application and conformity assessment make it an essential reference for ensuring that timber products are adequately protected against biological deterioration. The emphasis on evaluation and marking enhances trust and safety within the market, contributing positively to the overall integrity of timber construction practices.
SIST EN 15228:2009 표준은 생물학적 공격에 대한 보호 처리가 이루어진 구조목재에 대한 일반 요구 사항을 명시하고 있습니다. 이 표준의 범위는 구조목재의 보존 처리에 필요한 요구 사항과 시장에 출시되기 전에 준수 평가 및 마킹 요건을 포함합니다. 특히, 생물학적 공격에 대비한 보존 처리에는 생물 살해제가 포함되어 있으며, 이는 이 표준의 핵심 요소 중 하나입니다. 이 표준의 큰 강점 중 하나는 구조목재의 다양한 보존 처리 방법에 대해 포괄적인 안내를 제공하지 않으면서도, 지역적인 기후 차이와 우세한 생물학적 요인들을 고려하도록 명시하고 있다는 점입니다. 이렇게 함으로써 사용자는 특정 구조목재 제품에 대해 요구되는 수명 달성을 위한 적절한 보존 처리를 보다 정확하게 선택할 수 있습니다. 또한, 이 표준은 CE 마킹이 적용된 후 가공, 천공 또는 면취된 구조목재 제품에 필요한 후속 처리에 대한 내용을 다루고 있지 않으며, 이는 사용자에게 명확한 기준을 제공하여 불필요한 오해를 방지합니다. 이러한 점에서 SIST EN 15228:2009 표준은 구조목재 보존 처리의 중요성을 강조하며, 관련 제품의 품질과 안전성을 높이는 데 기여하고 있습니다. 결론적으로, SIST EN 15228:2009 표준은 구조목재의 생물학적 공격으로부터의 보호 처리에 관한 명확한 요구 사항을 제시하며, 보존 처리의 평가 및 마킹에 대한 지침을 통해 시장에서의 신뢰성을 확보하도록 돕습니다.
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