Differences between BS 5268: Part 2 and EN 1995-1-
DURABILITY STANDARDS FOR TIMBER
Durability – Standards for specifying durability and treatment of timber
Note, the basis for achieving durability in timber through CEN standards is substantially different to that used historically with British Standards. Whilst British Standards had an advisory style (recommending formulations and methods of treatment), the CEN approach is to define hazard classes and indicate timber species or loadings of preservative that will meet those classes. As a result of this different approach, many of the current British Standards in this area will remain in place, offering guidance for the foreseeable future.
Adhesives for timber-based structures – Test standards
BS standard BS EN standard Comments
BS EN 302-1: 1992 Adhesives for load-bearing timber structures: test methods. Determination of bond strength in longitudinal tensile shear.
BS EN 302-2: 1992 Adhesives for load-bearing timber structures: test methods. Determination of resistance to delamination (Laboratory method). BS EN 302-3: 1992 Adhesives for load-bearing timber structures: test methods. Determination of the effect of acid damage to wood fibres by temperature and humidity cycling on the transverse tensile strength. BS EN 302-4: 1992 Adhesives for load-bearing timber structures: test methods. Determination of the effects of wood shrinkage on the shear strength. DD ENV 302-5: 2002 Adhesives for load-bearing timber structures. Test methods. Determination of the conventional assembly time.
DD ENV rather than full EN standard.
BS ISO 6237: 2003 Adhesives. Wood-to-wood adhesive bonds.
Determination of shear strength by tensile loading.
BS ISO standard, current and potentially relevant, but not yet referenced by other standards relevant to structural timber.
Durability – Standards for specifying durability and treatment of timber (continued)
BS standard BS EN standard Comments
BS 5268-5: 1989
Structural use of timber. Code of practice for the preservative treatment of structural timber.
This standard is also listed amongst the other parts of BS 5268 under loading codes. No equivalent overall BS EN for durability of timber in structures. It has been declared obsolete. BS 1282: 1999 Wood
preservatives. Guidance on choice, use and application. BS 3842: 1965
Specification for treatment of plywood with preservatives.
Withdrawn; no direct replacement.
BS: 1989
Code of practice for preservation of timber.
Obsolete.
BS 6566-7: 1985
Plywood. Specification for classification of resistance to fungal decay and wood borer attack.
DD ENV 1099: 1998
Plywood. Biological durability. Guidance for the assessment of plywood for use in different hazard classes.
DD ENV rather than full EN standard. BS also partially replaced by BS EN 636: Plywood – Specifications.
BS 8417: 2003 Preservation of timber. Recommendations
Useful advisory standard giving guidance for preservative treatment of timber through the EN standards. As a BS it cannot be referenced within the body of EN 1995-1-1 when it is published, but could be referenced in a National Annex or national application document. In the future it may be put forward as the basis of a European standard. BS EN 335-1: 1992
Hazard classes of wood and wood-based products against biological attack. Classi- fication of hazard classes.
Revision under way.
BS EN 335-2: 1992
Hazard classes of wood and wood-based products against biological attack. Guide to the application of hazard classes to solid wood.
Revision under way.
BS EN 335-3: 1996
Hazard classes of wood and wood-based products against biological attack. Application to wood-based panels.
Durability – Standards for specifying durability and treatment of timber (continued)
BS standard BS EN standard Comments
BS EN 350-1: 1994
Durability of wood and wood- based products. Natural durability of solid wood. Guide to the principles of testing and classification of natural durability of wood.
Revision under way.
BS EN 350-2: 1994
Durability of wood and wood- based products. Natural durability of solid wood. Guide to natural durability and treatability of selected wood species of importance in Europe.
Revision under way.
BS EN 351-1: 1996
Durability of wood and wood- based products. Preservative- treated solid wood.
Classification of preservative penetration and retention.
Revision under way.
BS EN 460: 1994
Durability of wood and wood- based products. Natural durability of solid wood. Guide to the durability requirements for wood to be used in hazard classes.
Revision under way.
BS EN 599-1: 1997
Durability of wood and wood- based products. Performance of preservatives as determined by biological tests.
Specification according to hazard class.
Revision under way.
BS EN 599-2: 1997
Durability of wood and wood- based products. Performance of preservatives as determined by biological tests.
Classification and labelling.
Durability – Standards specifying wood preservative formulations
Note, creosote may now only be used in poles and railway sleepers, whilst from July 2004, limitations on the use of arsenic are expected to preclude the use of CCA preservative in all domestic buildings and various other situations.
BS standard BS EN standard Comments
BS 144: 1997
Specification for coal tar creosote for wood preservation. BS 3452: 1962 Specification for
copper/chrome water-borne wood preservatives and their application. Withdrawn; no direct replacement. BS 3453: 1962 Specification for fluoride/arsenate/chromate/ dinitrophenol water-borne wood preservatives and their application.
Withdrawn; no direct replacement.
BS 4072: 1999
Copper/chromium/arsenic preparations for wood preservation.
BS 5056: 1974
Specification for copper naphthenate wood preservatives.
Withdrawn; no direct replacement.
BS 5707: 1997
Specification for preparations of wood preservatives in organic solvents.
Durability – Test standards for preservatives and preservative treatments
BS standard BS EN standard Comments
DD 257-1: 2003
Methods of analysis of wood preservatives and treated timber. Quantitative analysis of wood preservative solutions and treated timber containing boron compounds.
Determination of total boron. DD 257-2: 2003
Methods of analysis of wood preservatives and treated timber. Quantitative analysis of wood preservative solutions and treated timber containing n-butyltin compounds. Determination of tributyltin, dibutyltin and monobutyltin. DD 257-3: 2003
Methods of analysis of wood preservatives and treated timber. Quantitative analysis of permethrin in solutions of wood preservatives in organic solvents.
DD 257-4: 2003
Methods of analysis of wood preservatives and treated timber. Quantitative analysis of cypermethrin in solutions of wood preservatives in organic solvents. DD 257-5: 2003
Methods of analysis of wood preservatives and treated timber. Determination of carboxylic acid type in zinc and copper carboxylate preservative solutions by gas chromatography.
BS 838: 1961
Methods of test for toxicity of wood preservatives to fungi.
Withdrawn; no direct replacement.
BS 5666-1: 1987, EN 212: 1986 Methods of analysis of wood preservatives and treated timber. Guide to sampling and preparation of wood
preservatives and treated timber for analysis.
BS EN 212: 2003
Wood preservatives. General guidance on sampling and preparation for analysis of wood preservatives and treated timber.
Durability – Test standards for preservatives and preservative treatments (continued)
BS standard BS EN standard Comments
BS 5666-3: 1991
Methods of analysis of wood preservatives and treated timber. Quantitative analysis of preservatives and treated timber containing copper/ chromium/arsenic formulations. BS 5666-4: 1979
Methods of analysis of wood preservatives and treated timber. Quantitative analysis of preservatives and treated timber containing copper naphthenate.
BS 5666-5: 1986
Methods of analysis of wood preservatives and treated timber. Determination of zinc naphthenate in preservative solutions and treated timber. BS 5666-6: 1983
Methods of analysis of wood preservatives and treated timber. Quantitative analysis of preservative solutions and treated timber containing pentachlorophenol, pentachlorophenyl laurate, y-hexachlorocyclohexane and dieldrin.
BS 5666-7: 1991
Methods of analysis of wood preservatives and treated timber. Quantitative analysis of preservatives containing bis(tri-n-butyltin)oxide : determination of total tin. BS 5761-1: 1989, EN 73: 1988 Wood preservatives.
Accelerated ageing of treated wood prior to biological testing. Evaporative ageing procedure.
BS 6559: 1985, HD 1/160 Guide. General introductory document on European (or CEN) methods of test for wood preservatives. BS 7282: 1990 Field test method for determining the relative protective effectiveness of a wood preservative in ground contact.
Durability – Test standards for preservatives and preservative treatments (continued)
BS standard BS EN standard Comments
BS EN 84: 1997 Wood preservatives.
Accelerated ageing of treated wood prior to biological testing. Leaching procedure. BS EN 330: 1993
Wood preservatives. Field test method for determining the relative protective
effectiveness of a wood preservative for use under a coating and exposed out-of- ground contact. L-joint method.
BS EN 351-2: 1996
Durability of wood and wood- based products. Preservative- treated solid wood. Guidance on sampling for the analysis of preservative-treated wood.
Revision under way.
BS EN 1014-1: 1995
Wood preservatives. Creosote and creosoted timber. Methods of sampling and analysis. Procedure for sampling creosote. BS EN 1014-2: 1996
Wood preservatives. Creosote and creosoted timber. Methods of sampling and analysis. Procedure for obtaining a sample of creosote from creosoted tim- ber for subsequent analysis. BS EN 1014-3: 1998
Wood preservatives. Creosote and creosoted timber. Methods of sampling and analysis. Determination of the benzo[a]pyrene content of creosote.
BS EN 1014-4: 1996
Wood preservatives. Creosote and creosoted timber. Methods of sampling and analysis. Determination of the water extractable phenol content of creosote.
Durability – Test standards for preservatives and preservative treatments (continued)
BS standard BS EN standard Comments
DD ENV 1250-1: 1995 Wood preservatives. Methods of measuring losses of active ingredients and other preservative ingredients from treated timber. Laboratory method for obtaining samples for analysis to measure losses by evaporation to air.
DD ENV rather than full EN standard.
DD ENV 1250-2: 1995 Wood preservatives. Methods of measuring losses of active ingredients and other preservative ingredients from treated timber. Laboratory method for obtaining samples for analysis to measure losses by leaching into water or synthetic sea water.
DD ENV rather than full EN standard.
BS EN 12490: 1999
Durability of wood and wood- based products. Preservative- treated solid wood.
Determination of the penetration and retention of creosote in treated wood. DD ENV 807: 2001 Wood preservatives. Determination of the effectiveness against soft rotting micro-fungi and other soil inhabiting micro-
organisms.
DD ENV rather than full EN standard.
DD ENV 839: 2002 Wood preservatives. Determination of the protective effectiveness against wood destroying basidiomycetes. Application by surface treatment.
DD ENV rather than full EN standard.
DD ENV 12037: 1996 Wood preservatives. Field test method for determining the relative protective
effectiveness of a wood preservative exposed out of ground contact. Horizontal lap-joint method.
DD ENV rather than full EN standard.
PD CEN/TR 14823: 2003 Durability of wood and wood- based products. Quantitative determination of penta- chlorophenol in wood. Gas chromatographic method.
PD CEN/TR rather than full EN standard.
Durability – Test methods for susceptibility to degrading organisms
BS standard BS EN standard Comments
BS 1982-0: 1990
Fungal resistance of panel products made of or containing materials of organic origin. Guide to methods for determination. BS 1982-1: 1990
Fungal resistance of panel products made of or containing materials of organic origin. Method for determination of resistance to wood-rotting Basidiomycetes. BS 1982-2: 1990
Fungal resistance of panel products made of or containing materials of organic origin. Method for determination of resistance to cellulose-decomposing microfungi.
BS 1982-3: 1990
Fungal resistance of panel products made of or containing materials of organic origin. Methods for determination of resistance to mould or mildew.
BS 5217: 1975, EN 20:1974 Wood preservatives. Determination of the preventive action against Lyctus brunneus (Stephens) (laboratory method).
BS EN 20-1: 1992 Wood preservatives. Determination of the protective effectiveness against Lyctus brunneus (Stephens). Application by surface treatment (laboratory method).
Revised as BS EN.
BS 5218: 1989, EN 21: 1988 Wood preservatives.
Determination of the toxic values against Anobium punctatum (De Geer) by larval transfer (laboratory method). BS 5219: 1975, EN 22: 1974 Wood preservatives.
Determination of eradicant action against Hylotrupes bajulus (Linnaeus) larvae (laboratory method).
Durability – Test methods for susceptibility to degrading organisms (continued)
BS standard BS EN standard Comments
BS 5434: 1989, EN 46: 1988 Wood preservatives.
Determination of the preventive action against recently hatched larvae of Hylotrupes bajulus (Linnaeus) (laboratory method).
BS 5435: 1989, EN 47: 1988 Wood preservatives.
Determination of the toxic values against larvae of Hylotrupes bajulus (Linnaeus) (laboratory method).
BS 5436: 1989, EN 48: 1988 Wood preservatives.
Determination of eradicant action against larvae of Anobium punctatum (De Geer) (laboratory method). BS 5437: 1977, EN 49:1976 Wood preservatives. Determination of the toxic values against Anobium punctatum (De Geer) by egg- laying and larval survival (laboratory method).
BS EN 49-2: 1992 Wood preservatives. Determination of the protective effectiveness against Anobium punctatum (De Geer) by egg-laying and larval survival. Application by impregnation (laboratory method).
Revised as BS EN.
BS 6239: 1990, EN 117: 1989 Wood preservatives.
Determination of toxic values against Reticulitermes santonenis de Feytaud (Laboratory method). BS 6240: 1990, EN 118: 1990 Wood preservatives. Determination of preventive action against Reticulitermes santonensis de Feytaud (laboratory method). BS 7066-1: 1990, EN 152-1: 1988
Wood preservatives. Laboratory method for determining the protective effectiveness of a preservative treatment against blue stain in service. Brushing procedure.
Durability – Test methods for susceptibility to degrading organisms (continued)
BS standard BS EN standard Comments
BS 7066-2: 1990, EN 152-2: 1988
Wood preservatives. Laboratory method for determining the protective effectiveness of a preservative treatment against blue stain in service. Application by methods other than brushing.
BS EN 20-2: 1993 Wood preservatives. Determination of the protective effectiveness against Lyctus brunneus (Stephens). Application by impregnation (laboratory method).
BS EN 49-1: 1992 Wood preservatives. Determination of the protective effectiveness against Anobium punctatum (De Geer) by egg-laying and larval survival. Application by surface treatment (laboratory method).
BS EN 113: 1997 Wood preservatives. Test method for determining the protective effectiveness against wood destroying basidiomycetes. Determination of the toxic values.
BS EN 273: 1992 Wood preservatives. Determination of the curative action against Lyctus brunneus (Stephens) (Laboratory method). BS EN 370: 1993 Wood preservatives. Determination of eradicant efficacy in pre- venting emergence of Ano- bium punctatum (De Geer). DD ENV 1390: 1995 Wood preservatives. Determination of the eradicant action against Hylotrupes bajulus (Linnaeus) larvae. Laboratory method.
DD ENV rather than full EN standard.
Durability – Terminology standards
BS standard BS EN standard Comments
BS 4261: 1999 Wood preservation. Vocabulary.
EN 1001: 2002
Durability of wood and wood- based products. List of equivalent terms.
Not yet a full EN standard. Durability – Test methods for susceptibility to degrading organisms (continued)
BS standard BS EN standard Comments
DD ENV 12038: 2002
Durability of wood and wood- based products. Wood-based panels. Method of test for determining the resistance against wood-destroying basidiomycetes.
DD ENV rather than full EN standard.
DD ENV 12404: 1997
Durability of wood and wood- based products. Assessment of the effectiveness of a masonry fungicide to prevent growth into wood of dry rot Serpula lacrymans
(Schumacher ex Fries) S. F. Gray. Laboratory method.
DD ENV rather than full EN standard.