Foreword

Publishing information

This British Standard is published by BSI Standards Limited, under licence from the British Standards Institution, and came into effect on 31 March 2011. It was prepared by Technical Committee B/515, Wood Preservation. A list of organizations represented on this committee can be obtained on request to its secretary.

Supersession

BS 8417:2011 superseded BS 1282:1999, which has been withdrawn.

BS 8417:2011+A1:2014 supersedes BS 8417:2011, which is withdrawn.

Relationship with other publications

This British Standard is one of a group of documents dealing with the preservative treatment of wood. It is based on the principles given in BS EN 599‑1, BS EN 351‑1 and BS EN 335 developed to support product standards mandated by the Construction Products Directive [1]. This standard is the national interpretative document for BS EN 599‑1 and BS EN 351‑1, and is intended to provide complementary information that is relevant to the wood treater and to the specifi or purchaser of treated wood for use in the United Kingdom.

Information about this document

BS 8417:2011 was a full revision of the standard and introduced the following principal changes:

a) recommendations for the application of preservatives conforming to BS 4072 and BS 5707 are omitted as these materials are now largely unavailable;
b) “R” (the lowest appropriate level of preservative retention), qualified by a number identifying the relevant use class, replaces “cv” (the critical value derived from tests in BS EN 599‑1) as the designator of preservative retention in Table 4;
c) the recommendation for the acceptable quality level for resistant wood to be used in use class 4 and use class 5 has been updated.

Text introduced or altered by Amendment No. 1 or Corrigendum No. 1 is indicated in the text by tags and , respectively. Minor editorial changes are not tagged.

Use of this document

As a code of practice, this British Standard takes the form of guidance and recommendations. It should not be quoted as if it were a specification and particular care should be taken to ensure that claims of compliance are not misleading.

Any user claiming compliance with this British Standard is expected to be able to justify any course of action that deviates from its recommendations.

It has been assumed in the preparation of this British Standard that the execution of its provisions will be entrusted to appropriately qualified and experienced people, for whose use it has been produced.

Presentational conventions

The provisions in this standard are presented in roman (i.e. upright) type. Its recommendations are expressed in sentences in which the principal auxiliary verb is “should”.

Commentary, explanation and general informative material is presented in smaller italic type, and does not constitute a normative element.

Contractual and legal considerations

This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.

Compliance with a British Standard cannot confer immunity from legal obligations.

BS 8417:2011+A1:2014

Preservation of wood. Code of practice

Published:

31 Mar 2011

Withdrawn:

15 Aug 2024