TRADA | TIMBER RESEARCH AND DEVELOPMENT ASSOCIATIONEUROCODESSPAN TABLESWOOD SPECIESCASE STUDIESRESEARCHBOOKS ONLINE TRADA (The Timber Research and Development Association) is an international membership organisation dedicated to inspiring and informing best practice design, specification and use of wood in the built environment and related fields. We pride ourselves in providing independent, authoritative design and technical guidance through this

website

LEARN MORE ABOUT CLADDING Using our FAQs, simple guides and cladding detailing book below, let us help you get the design right first time. For design consultancy, inspections and training on cladding, call our technical helpline on +44 (0)1494 569601. All commercial services are provided by TRADA’s service provider, BM TRADA.

SPAN TABLES

Bookshop: Eurocode 5 span tables. Now in its 4th edition, the TRADA Span Tables publication is a must for any designer or builder.. Easy to look up tables allow the reader to choose the size of solid softwood timber members necessary to give adequate support to floors, ceilings and roofs in dwellings. NEWS AND STORIES FROM TRADA Call 01494 569603 or email Kathryn Macneil, our membership administrator, on membership@trada.co.uk. The structural timber engineering series. Tuesday 18 May ∙ 12:00–13:30. Understanding structural timber products, how they are made and for what purposes they are used with Hugh Mansfield-Williams, Technical Manager, BM

TRADA, and Andrew

NEWS AND STORIES FROM TRADA Photo: SBI test rig at Warringtonfire. TRADA, in conjunction with other timber associations, has produced the following statement in relation to the performance of wood cladding in a fire. The Confederation of Timber Industries (CTI) is an umbrella organisation, representing the UK's timber supply chain from forest to end of life

recycling.

NEWS AND STORIES FROM TRADA From a technical perspective, the key aspects of the Springfield Meadows specification and approach are summarised below: Designed and built using Passivhaus principles with space heating requirement of less than 15kWh/m2/year. Airtightness performance < 1.0 m3/m2/h at 50Pa (q50) Thermal bridging y-value 0.4 W/m2K. NEWS AND STORIES FROM TRADA Fire stopping and cavity barriers remain vital; this is because flame height in cavities can extend 5–10 times that of those in open air, due to the ‘chimney effect’. See diagram 33, which stipulates where these are needed. In the case of timber cladding, TRADA’s advice is that a cavity is needed behind cladding to allow it to

breathe

NEWS AND STORIES FROM TRADA The approach is to ‘reduce the height threshold to 11 metres now, and commission research to allow further review of the height threshold’ as the option that best provides public protection. TRADA’s overarching comment on this at this point is that we need to be very careful in how we handle this debate. If we deviate from a

philosophical

TIMBER INFORMATION, PUBLICATIONS AND TECHNICAL GUIDANCE Timber won't rot if it's kept dry to a moisture content below 20%. When it's used outside, this may not be possible. There are two solutions to this problem, either you can use a naturally durable timber - such as oak or western red cedar - or you can use a non-durable softwood that's been treated with a WOOD SPECIES DATABASE: IDIGBO It is soft to medium hard, and weighs about 560 kg/m³ when dried. The weight is often variable, due to a prevalence of lightweight brittle-heart, particularly in large, over-mature logs. It may vary from 480 to 625 kg/m³ but for general assessment, the average dry weight is as given. Idigbo dries readily and well, with little

distortion and

TRADA | TIMBER RESEARCH AND DEVELOPMENT ASSOCIATIONEUROCODESSPAN TABLESWOOD SPECIESCASE STUDIESRESEARCHBOOKS ONLINE TRADA (The Timber Research and Development Association) is an international membership organisation dedicated to inspiring and informing best practice design, specification and use of wood in the built environment and related fields. We pride ourselves in providing independent, authoritative design and technical guidance through this

website

LEARN MORE ABOUT CLADDING Using our FAQs, simple guides and cladding detailing book below, let us help you get the design right first time. For design consultancy, inspections and training on cladding, call our technical helpline on +44 (0)1494 569601. All commercial services are provided by TRADA’s service provider, BM TRADA.

SPAN TABLES

Bookshop: Eurocode 5 span tables. Now in its 4th edition, the TRADA Span Tables publication is a must for any designer or builder.. Easy to look up tables allow the reader to choose the size of solid softwood timber members necessary to give adequate support to floors, ceilings and roofs in dwellings. NEWS AND STORIES FROM TRADA Call 01494 569603 or email Kathryn Macneil, our membership administrator, on membership@trada.co.uk. The structural timber engineering series. Tuesday 18 May ∙ 12:00–13:30. Understanding structural timber products, how they are made and for what purposes they are used with Hugh Mansfield-Williams, Technical Manager, BM

TRADA, and Andrew

NEWS AND STORIES FROM TRADA Photo: SBI test rig at Warringtonfire. TRADA, in conjunction with other timber associations, has produced the following statement in relation to the performance of wood cladding in a fire. The Confederation of Timber Industries (CTI) is an umbrella organisation, representing the UK's timber supply chain from forest to end of life

recycling.

NEWS AND STORIES FROM TRADA From a technical perspective, the key aspects of the Springfield Meadows specification and approach are summarised below: Designed and built using Passivhaus principles with space heating requirement of less than 15kWh/m2/year. Airtightness performance < 1.0 m3/m2/h at 50Pa (q50) Thermal bridging y-value 0.4 W/m2K. NEWS AND STORIES FROM TRADA Fire stopping and cavity barriers remain vital; this is because flame height in cavities can extend 5–10 times that of those in open air, due to the ‘chimney effect’. See diagram 33, which stipulates where these are needed. In the case of timber cladding, TRADA’s advice is that a cavity is needed behind cladding to allow it to

breathe

NEWS AND STORIES FROM TRADA The approach is to ‘reduce the height threshold to 11 metres now, and commission research to allow further review of the height threshold’ as the option that best provides public protection. TRADA’s overarching comment on this at this point is that we need to be very careful in how we handle this debate. If we deviate from a

philosophical

TIMBER INFORMATION, PUBLICATIONS AND TECHNICAL GUIDANCE Timber won't rot if it's kept dry to a moisture content below 20%. When it's used outside, this may not be possible. There are two solutions to this problem, either you can use a naturally durable timber - such as oak or western red cedar - or you can use a non-durable softwood that's been treated with a WOOD SPECIES DATABASE: IDIGBO It is soft to medium hard, and weighs about 560 kg/m³ when dried. The weight is often variable, due to a prevalence of lightweight brittle-heart, particularly in large, over-mature logs. It may vary from 480 to 625 kg/m³ but for general assessment, the average dry weight is as given. Idigbo dries readily and well, with little

distortion and

SIGN IN TO MY TRADA

Non-Corporate. Promote your offerings to the top UK audience of timber specifiers / buyers. Save time and money by getting authoritative advice quickly. Equip your staff to upsell and cross sell your product range. Become a Member. Save time and money using our authoritative advice. Be confident about taking on more challenging timber projects. NEWS AND STORIES FROM TRADA This Grade 1 listed medieval barn, originally built in 1403, was damaged by fire in 2003. At 210 feet long it is the longest barn in the UK. A third of the barn was re-built in locally sourced green oak. Large quantities of curved timber were selected for braces and tie TRADA | TIMBER RESEARCH AND DEVELOPMENT ASSOCIATION Information on the resistance of some timbers to insect and marine borer attack is given in BS EN 350-2 Guide to natural durability and treatability of selected wood species of importance in Europe. Guidance on the need for preservative treatment in particular situations is given in BS 8417:2003. Note that BS 5268-5 and BS 5589

are now obsolete.

NEWS AND STORIES FROM TRADA The new edition of External timber cladding will include: an outline of the benefits of timber compared to other cladding materials. discussion of each stage in the design and construction process. expanded guidance on fire safety and structural performance. new construction details for the main connections and junctions on a

timber-clad wall.

NEWS AND STORIES FROM TRADA Ongoing use of TRADA’s National Structural Timber Specification has thrown up some interesting results into timber’s usage, not least in the area of moisture in timber, leading to the latest revisions in TRADA’s Wood Information Sheet on the subject.. With more than 80% of in-service problems associated with wood being related to its moisture content, this revised WIS features an updated TIMBER INFORMATION, PUBLICATIONS AND TECHNICAL GUIDANCE Timber won't rot if it's kept dry to a moisture content below 20%. When it's used outside, this may not be possible. There are two solutions to this problem, either you can use a naturally durable timber - such as oak or western red cedar - or you can use a non-durable softwood that's been treated with a NEWS AND STORIES FROM TRADA TRADA’s Panel Guide has been revised. TRADA’s revised Panel Guide (Version 4.1) is a helpful interactive PDF which provides information on the properties, applications and end uses of all the main types of wood-based panel: It is aimed at construction professionals (including specifiers, designers, building engineers, and architects), panel TIMBER INFORMATION, PUBLICATIONS AND TECHNICAL GUIDANCE Timber has proved to be a particularly suitable material for a wide range of domestic and commercial fencing applications throughout the UK. Easily worked and readily available in a variety of types, shapes and sizes, it can last longer and perform better than many alternative materials - either in its TRADA | TIMBER RESEARCH AND DEVELOPMENT ASSOCIATION We are dedicated to inspiring and informing best practice timber design, timber specification and use of wood in the built environment

and related fields.

TRADA'S WOOD INFORMATION SHEETS This document contains a fully comprehensive list of all the most up to date Wood Information Sheets (WIS) published by TRADA. Available to members for free or non-members for £12.00, these Wood Information Sheets provide technical guidance related to almost every timber topic

under the sun.

TRADA | TIMBER RESEARCH AND DEVELOPMENT ASSOCIATIONEUROCODESSPAN TABLESWOOD SPECIESCASE STUDIESRESEARCHBOOKS ONLINE TRADA (The Timber Research and Development Association) is an international membership organisation dedicated to inspiring and informing best practice design, specification and use of wood in the built environment and related fields. We pride ourselves in providing independent, authoritative design and technical guidance through this

website

SIGN IN TO MY TRADA

Non-Corporate. Promote your offerings to the top UK audience of timber specifiers / buyers. Save time and money by getting authoritative advice quickly. Equip your staff to upsell and cross sell your product range. Become a Member. Save time and money using our authoritative advice. Be confident about taking on more challenging timber projects.

SPAN TABLES

Bookshop: Eurocode 5 span tables. Now in its 4th edition, the TRADA Span Tables publication is a must for any designer or builder.. Easy to look up tables allow the reader to choose the size of solid softwood timber members necessary to give adequate support to floors, ceilings and roofs in dwellings. TIMBER DESIGN TOOLS AND ONLINE TIMBER SOFTWARE FOR TimbersizerPro EC5 edition Select the most efficient timber cross-section for your design with this time-saving online software for engineers and architects. timberconnectionsPro EC5 edition Based on the Eurocodes 0, 1 and 5 and their UK National annexes, timberconnections is regularly reviewed and updated to keep abreast of any modifications and changes to the standards. LEARN MORE ABOUT CLADDING Using our FAQs, simple guides and cladding detailing book below, let us help you get the design right first time. For design consultancy, inspections and training on cladding, call our technical helpline on +44 (0)1494 569601. All commercial services are provided by TRADA’s service provider, BM TRADA. WOOD SPECIES DATABASE Wood Species Database. The species database will help you choose the most suitable wood species for your project. It contains the physical properties and illustrations of more than 150 commercial species, reproduced from the popular TRADA Red Books and Wood Information Sheets. Use Cladding Decking Flooring Furniture Heavy structural use

Joinery

NEWS AND STORIES FROM TRADA Photo: SBI test rig at Warringtonfire. TRADA, in conjunction with other timber associations, has produced the following statement in relation to the performance of wood cladding in a fire. The Confederation of Timber Industries (CTI) is an umbrella organisation, representing the UK's timber supply chain from forest to end of life

recycling.

LEARN MORE ABOUT TIMBER FRAME CONSTRUCTION Timber frame construction uses timber studs and rails, together with a structural sheathing board, to form a structural frame that transmits all vertical and horizontal loads to the foundations. Use our FAQ and simple guides to find out more about timber building methods, thermal performance, fire protection measures and sole plate requirements. WOOD SPECIES DATABASE: IDIGBO It is soft to medium hard, and weighs about 560 kg/m³ when dried. The weight is often variable, due to a prevalence of lightweight brittle-heart, particularly in large, over-mature logs. It may vary from 480 to 625 kg/m³ but for general assessment, the average dry weight is as given. Idigbo dries readily and well, with little

distortion and

WOOD SPECIES DATABASE It is a very resinous wood, with clearly marked annual rings. It has a straight grain, a fine, uniform texture and is rather heavy, weighing 590 kg/m³ when dried, it is likely that plantaion grown L.sibirica and that grown in more southerly Europe is of lower density. Its heartwood is listed as moderately durable, and its narrow sapwood

means

TRADA | TIMBER RESEARCH AND DEVELOPMENT ASSOCIATIONEUROCODESSPAN TABLESWOOD SPECIESCASE STUDIESRESEARCHBOOKS ONLINE TRADA (The Timber Research and Development Association) is an international membership organisation dedicated to inspiring and informing best practice design, specification and use of wood in the built environment and related fields. We pride ourselves in providing independent, authoritative design and technical guidance through this

website

SIGN IN TO MY TRADA

Non-Corporate. Promote your offerings to the top UK audience of timber specifiers / buyers. Save time and money by getting authoritative advice quickly. Equip your staff to upsell and cross sell your product range. Become a Member. Save time and money using our authoritative advice. Be confident about taking on more challenging timber projects.

SPAN TABLES

Bookshop: Eurocode 5 span tables. Now in its 4th edition, the TRADA Span Tables publication is a must for any designer or builder.. Easy to look up tables allow the reader to choose the size of solid softwood timber members necessary to give adequate support to floors, ceilings and roofs in dwellings. TIMBER DESIGN TOOLS AND ONLINE TIMBER SOFTWARE FOR TimbersizerPro EC5 edition Select the most efficient timber cross-section for your design with this time-saving online software for engineers and architects. timberconnectionsPro EC5 edition Based on the Eurocodes 0, 1 and 5 and their UK National annexes, timberconnections is regularly reviewed and updated to keep abreast of any modifications and changes to the standards. LEARN MORE ABOUT CLADDING Using our FAQs, simple guides and cladding detailing book below, let us help you get the design right first time. For design consultancy, inspections and training on cladding, call our technical helpline on +44 (0)1494 569601. All commercial services are provided by TRADA’s service provider, BM TRADA. WOOD SPECIES DATABASE Wood Species Database. The species database will help you choose the most suitable wood species for your project. It contains the physical properties and illustrations of more than 150 commercial species, reproduced from the popular TRADA Red Books and Wood Information Sheets. Use Cladding Decking Flooring Furniture Heavy structural use

Joinery

NEWS AND STORIES FROM TRADA Photo: SBI test rig at Warringtonfire. TRADA, in conjunction with other timber associations, has produced the following statement in relation to the performance of wood cladding in a fire. The Confederation of Timber Industries (CTI) is an umbrella organisation, representing the UK's timber supply chain from forest to end of life

recycling.

LEARN MORE ABOUT TIMBER FRAME CONSTRUCTION Timber frame construction uses timber studs and rails, together with a structural sheathing board, to form a structural frame that transmits all vertical and horizontal loads to the foundations. Use our FAQ and simple guides to find out more about timber building methods, thermal performance, fire protection measures and sole plate requirements. WOOD SPECIES DATABASE: IDIGBO It is soft to medium hard, and weighs about 560 kg/m³ when dried. The weight is often variable, due to a prevalence of lightweight brittle-heart, particularly in large, over-mature logs. It may vary from 480 to 625 kg/m³ but for general assessment, the average dry weight is as given. Idigbo dries readily and well, with little

distortion and

WOOD SPECIES DATABASE It is a very resinous wood, with clearly marked annual rings. It has a straight grain, a fine, uniform texture and is rather heavy, weighing 590 kg/m³ when dried, it is likely that plantaion grown L.sibirica and that grown in more southerly Europe is of lower density. Its heartwood is listed as moderately durable, and its narrow sapwood

means

TIMBER DESIGN TOOLS AND ONLINE TIMBER SOFTWARE FOR TimbersizerPro EC5 edition Select the most efficient timber cross-section for your design with this time-saving online software for engineers and architects. timberconnectionsPro EC5 edition Based on the Eurocodes 0, 1 and 5 and their UK National annexes, timberconnections is regularly reviewed and updated to keep abreast of any modifications and changes to the standards. WOOD SPECIES DATABASE Wood Species Database. The species database will help you choose the most suitable wood species for your project. It contains the physical properties and illustrations of more than 150 commercial species, reproduced from the popular TRADA Red Books and Wood Information Sheets. Use Cladding Decking Flooring Furniture Heavy structural use

Joinery

INSPIRATIONAL TIMBER CASE STUDIES Read case studies which feature inspirational timber buildings selected for their quality in design and construction. Each study demonstrates why timber was selected and how the design works, including comprehensive technical description, photographs during and after construction, and detail drawings. LEARN MORE ABOUT TIMBER FRAME CONSTRUCTION Timber frame construction uses timber studs and rails, together with a structural sheathing board, to form a structural frame that transmits all vertical and horizontal loads to the foundations. Use our FAQ and simple guides to find out more about timber building methods, thermal performance, fire protection measures and sole plate requirements. OFF-SITE AND INDUSTRIALISED TIMBER CONSTRUCTION Off-site and industrialised timber construction: Delivering quality and efficiency. Many prefer the versatility of timber frame for panelised, volumetric and hybrid built off-site systems. Other suitable methods include timber post and beam, ‘mass’ construction using cross-laminated timber, and structural insulated panel systems. TRADA | TIMBER RESEARCH AND DEVELOPMENT ASSOCIATION TRADA is delighted to introduce Riverside Sunderland: University Design Challenge, an exciting competition for both current built environment students and 2020 graduates from across the UK. In inter-disciplinary design teams of 4–8 members, you are invited to produce a masterplan for one area of the Riverside Sunderland development which will TRADA | TIMBER RESEARCH AND DEVELOPMENT ASSOCIATION We are dedicated to inspiring and informing best practice timber design, timber specification and use of wood in the built environment

and related fields.

NEWS AND STORIES FROM TRADA The durability of timber components is just as much about design and environment as it is about preservative treatment for wood. Timber in construction has undergone something of a renaissance, led by the desire to use more environmentally-friendly materials and to reduce construction costs. The development of modified wood and engineered PITCHED TIMBER ROOFS: A GEOMETRY LESSON Pitched timber roofs: a geometry lesson. Mark Milner focuses on the maths involved in setting out a traditional pitched timber roof, determining lengths and bevels, and the various cuts required. Article from Timber 2020 Industry Yearbook. UPGRADING TIMBER JOINERY FOR FIRE RESISTANCE Upgrading timber joinery doors for fire resistance. This Wood Information Sheet gives guidance on assessing the suitability of existing doors for upgrading to give a 20 or 30 minutes' fire resistance comparable with that of purpose-made fire doors. Upgrading

to 60

TRADA | TIMBER RESEARCH AND DEVELOPMENT ASSOCIATIONEUROCODESSPAN TABLESWOOD SPECIESCASE STUDIESRESEARCHBOOKS ONLINE Welcome to TRADA. TRADA (The Timber Research and Development Association) is an international membership organisation dedicated to inspiring and informing best practice design, specification and use of wood in the built environment and related fields.

SPAN TABLES

Bookshop: Eurocode 5 span tables. Now in its 4th edition, the TRADA Span Tables publication is a must for any designer or builder.. Easy to look up tables allow the reader to choose the size of solid softwood timber members necessary to give adequate support to floors, ceilings and roofs in dwellings. LEARN MORE ABOUT CLADDING Timber cladding is very much in vogue. Designed well, it can produce a beautiful, long-lasting, low maintenance rain screen. However, when mistakes are made in the design it is usually very visible. NEWS AND STORIES FROM TRADA The latest news and stories from TRADA including technical information, timber industry news, Construction Products Association (CPA) reports and our latest event updates NEWS AND STORIES FROM TRADA TRADA’s revised Panel Guide (Version 4.1) is a helpful interactive PDF which provides information on the properties, applications and end uses of all the main types of wood-based panel: NEWS AND STORIES FROM TRADA Professionals undertaking surveys of timber frame buildings should have an understanding of the overall design and typical detailing employed in this form of construction, according to a revised Wood Information Sheet ‘Surveys of timber framed houses’. TIMBER INFORMATION, PUBLICATIONS AND TECHNICAL GUIDANCE Timber won't rot if it's kept dry to a moisture content below 20%. When it's used outside, this may not be possible. There are two solutions to this problem, either you can use a naturally durable timber - such as oak or western red cedar - or you can use a non-durable softwood that's been treated with a WOOD SPECIES DATABASE Environmental. Not listed in CITES. Believed available from well-managed sources. Check certification status with suppliers. Distribution. In Canada it is found in Newfoundland and in eastern Canada from the Maritime Provinces to eastern Manitoba, but the commercial forests lie WOOD SPECIES DATABASE: IDIGBO Environmental. Listed in the IUCN Red List of Threatened Species as VU – Vulnerable: at risk of extinction. Distribution. Occurs in Equatorial Guinea, Sierra Leone, Liberia, Ivory Coast, Ghana, southern Nigeria, in parts of the PITCHED TIMBER ROOFS: A GEOMETRY LESSON Mark Milner focuses on the maths involved in setting out a traditional pitched timber roof, determining lengths and bevels, and the various

cuts required.

TRADA | TIMBER RESEARCH AND DEVELOPMENT ASSOCIATIONEUROCODESSPAN TABLESWOOD SPECIESCASE STUDIESRESEARCHBOOKS ONLINE Welcome to TRADA. TRADA (The Timber Research and Development Association) is an international membership organisation dedicated to inspiring and informing best practice design, specification and use of wood in the built environment and related fields.

SPAN TABLES

Bookshop: Eurocode 5 span tables. Now in its 4th edition, the TRADA Span Tables publication is a must for any designer or builder.. Easy to look up tables allow the reader to choose the size of solid softwood timber members necessary to give adequate support to floors, ceilings and roofs in dwellings. LEARN MORE ABOUT CLADDING Timber cladding is very much in vogue. Designed well, it can produce a beautiful, long-lasting, low maintenance rain screen. However, when mistakes are made in the design it is usually very visible. NEWS AND STORIES FROM TRADA The latest news and stories from TRADA including technical information, timber industry news, Construction Products Association (CPA) reports and our latest event updates NEWS AND STORIES FROM TRADA TRADA’s revised Panel Guide (Version 4.1) is a helpful interactive PDF which provides information on the properties, applications and end uses of all the main types of wood-based panel: NEWS AND STORIES FROM TRADA Professionals undertaking surveys of timber frame buildings should have an understanding of the overall design and typical detailing employed in this form of construction, according to a revised Wood Information Sheet ‘Surveys of timber framed houses’. TIMBER INFORMATION, PUBLICATIONS AND TECHNICAL GUIDANCE Timber won't rot if it's kept dry to a moisture content below 20%. When it's used outside, this may not be possible. There are two solutions to this problem, either you can use a naturally durable timber - such as oak or western red cedar - or you can use a non-durable softwood that's been treated with a WOOD SPECIES DATABASE Environmental. Not listed in CITES. Believed available from well-managed sources. Check certification status with suppliers. Distribution. In Canada it is found in Newfoundland and in eastern Canada from the Maritime Provinces to eastern Manitoba, but the commercial forests lie WOOD SPECIES DATABASE: IDIGBO Environmental. Listed in the IUCN Red List of Threatened Species as VU – Vulnerable: at risk of extinction. Distribution. Occurs in Equatorial Guinea, Sierra Leone, Liberia, Ivory Coast, Ghana, southern Nigeria, in parts of the PITCHED TIMBER ROOFS: A GEOMETRY LESSON Mark Milner focuses on the maths involved in setting out a traditional pitched timber roof, determining lengths and bevels, and the various

cuts required.

SIGN IN TO MY TRADA

Already a free user or member of TRADA? Sign in here. Interested in downloading a TRADA case study or sampling a range of our comprehensive wood information? Register here for instant free user

access.

TIMBER INFORMATION, PUBLICATIONS AND TECHNICAL GUIDANCE Timber won't rot if it's kept dry to a moisture content below 20%. When it's used outside, this may not be possible. There are two solutions to this problem, either you can use a naturally durable timber - such as oak or western red cedar - or you can use a non-durable softwood that's been treated with a NEWS AND STORIES FROM TRADA The structural timber engineering series. Tuesday 18 May ∙ 12:00–13:30 Understanding structural timber products, how they are made and for what purposes they are used with Hugh Mansfield-Williams, Technical Manager, BM TRADA, and Andrew King, Director, Constructional Timber.. Hugh and Andrew will look at the various manufacturing techniques employed to make structural timber OFF-SITE AND INDUSTRIALISED TIMBER CONSTRUCTION Many prefer the versatility of timber frame for panelised, volumetric and hybrid built off-site systems. Other suitable methods include timber post and beam, ‘mass’ construction using cross-laminated timber, and structural insulated panel systems. TIMBER INFORMATION, PUBLICATIONS AND TECHNICAL GUIDANCE Timber has proved to be a particularly suitable material for a wide range of domestic and commercial fencing applications throughout the UK. Easily worked and readily available in a variety of types, shapes and sizes, it can last longer and perform better than many alternative materials - either in its NEWS AND STORIES FROM TRADA Ongoing use of TRADA’s National Structural Timber Specification has thrown up some interesting results into timber’s usage, not least in the area of moisture in timber, leading to the latest revisions in TRADA’s Wood Information Sheet on the subject.. With more than 80% of in-service problems associated with wood being related to its moisture content, this revised WIS features an updated TRADA | TIMBER RESEARCH AND DEVELOPMENT ASSOCIATION Working Qualities. Refers to ease of working and is classed as good, medium or difficult. A difficult classification indicates that particular care should be taken in TRADA | TIMBER RESEARCH AND DEVELOPMENT ASSOCIATION We are dedicated to inspiring and informing best practice timber design, timber specification and use of wood in the built environment

and related fields.

TRADA BOOKS ONLINE

View the full text of selected books online including detailed drawings and tables. These are available online exclusively to TRADA members. Titles include Timber frame construction, Cross-laminated timber: design and performance, Structural timber elements: a pre-scheme design guide, Panel guide, Green oak in construction, UK Timber supply chain and External timber cladding. TRADA'S WOOD INFORMATION SHEETS This document contains a fully comprehensive list of all the most up to date Wood Information Sheets (WIS) published by TRADA. Available to members for free or non-members for £12.00, these Wood Information Sheets provide technical guidance related to almost every timber topic

under the sun.

TRADA | TIMBER RESEARCH AND DEVELOPMENT ASSOCIATIONEUROCODESSPAN TABLESWOOD SPECIESCASE STUDIESRESEARCHBOOKS ONLINE TRADA (The Timber Research and Development Association) is an international membership organisation dedicated to inspiring and informing best practice design, specification and use of wood in the built environment and related fields. We pride ourselves in providing independent, authoritative design and technical guidance through this

website

SIGN IN TO MY TRADA

Non-Corporate. Promote your offerings to the top UK audience of timber specifiers / buyers. Save time and money by getting authoritative advice quickly. Equip your staff to upsell and cross sell your product range. Become a Member. Save time and money using our authoritative advice. Be confident about taking on more challenging timber projects. EXPERT TIMBER ADVICE AND TIMBER DESIGN GUIDANCE We pride ourselves in providing independent, authoritative design guidance through this website, on-line software, printed publications, e-books, and our telephone helpline. We link specifiers and purchasers with timber industry members through our Find a Supplier directory. If you would like to join us, we would love to hear from you. LEARN MORE ABOUT CLADDING Using our FAQs, simple guides and cladding detailing book below, let us help you get the design right first time. For design consultancy, inspections and training on cladding, call our technical helpline on +44 (0)1494 569601. All commercial services are provided by TRADA’s service provider, BM TRADA.

SPAN TABLES

Bookshop: Eurocode 5 span tables. Now in its 4th edition, the TRADA Span Tables publication is a must for any designer or builder.. Easy to look up tables allow the reader to choose the size of solid softwood timber members necessary to give adequate support to floors, ceilings and roofs in dwellings. LEARN MORE ABOUT TIMBER WINDOWS AND DOORS Windows and doors provide so many critical attributes to a building, many of which we take for granted: aesthetics, weather protection, fire resistance, sound reduction, security and more besides. Read our guide to correctly specify the right timber product including finishes for timber external doors, CE marking requirements, moisture movement in external timber doorsets, designing for long LEARN MORE ABOUT TIMBER FRAME CONSTRUCTION Timber frame construction uses timber studs and rails, together with a structural sheathing board, to form a structural frame that transmits all vertical and horizontal loads to the foundations. Use our FAQ and simple guides to find out more about timber building methods, thermal performance, fire protection measures and sole plate requirements. NEWS AND STORIES FROM TRADA The approach is to ‘reduce the height threshold to 11 metres now, and commission research to allow further review of the height threshold’ as the option that best provides public protection. TRADA’s overarching comment on this at this point is that we need to be very careful in how we handle this debate. If we deviate from a

philosophical

NEWS AND STORIES FROM TRADA TRADA’s Panel Guide has been revised. TRADA’s revised Panel Guide (Version 4.1) is a helpful interactive PDF which provides information on the properties, applications and end uses of all the main types of wood-based panel: It is aimed at construction professionals (including specifiers, designers, building engineers, and architects), panel WOOD SPECIES DATABASE It is a very resinous wood, with clearly marked annual rings. It has a straight grain, a fine, uniform texture and is rather heavy, weighing 590 kg/m³ when dried, it is likely that plantaion grown L.sibirica and that grown in more southerly Europe is of lower density. Its heartwood is listed as moderately durable, and its narrow sapwood

means

TRADA | TIMBER RESEARCH AND DEVELOPMENT ASSOCIATIONEUROCODESSPAN TABLESWOOD SPECIESCASE STUDIESRESEARCHBOOKS ONLINE TRADA (The Timber Research and Development Association) is an international membership organisation dedicated to inspiring and informing best practice design, specification and use of wood in the built environment and related fields. We pride ourselves in providing independent, authoritative design and technical guidance through this

website

SIGN IN TO MY TRADA

Non-Corporate. Promote your offerings to the top UK audience of timber specifiers / buyers. Save time and money by getting authoritative advice quickly. Equip your staff to upsell and cross sell your product range. Become a Member. Save time and money using our authoritative advice. Be confident about taking on more challenging timber projects. EXPERT TIMBER ADVICE AND TIMBER DESIGN GUIDANCE We pride ourselves in providing independent, authoritative design guidance through this website, on-line software, printed publications, e-books, and our telephone helpline. We link specifiers and purchasers with timber industry members through our Find a Supplier directory. If you would like to join us, we would love to hear from you. LEARN MORE ABOUT CLADDING Using our FAQs, simple guides and cladding detailing book below, let us help you get the design right first time. For design consultancy, inspections and training on cladding, call our technical helpline on +44 (0)1494 569601. All commercial services are provided by TRADA’s service provider, BM TRADA.

SPAN TABLES

Bookshop: Eurocode 5 span tables. Now in its 4th edition, the TRADA Span Tables publication is a must for any designer or builder.. Easy to look up tables allow the reader to choose the size of solid softwood timber members necessary to give adequate support to floors, ceilings and roofs in dwellings. LEARN MORE ABOUT TIMBER WINDOWS AND DOORS Windows and doors provide so many critical attributes to a building, many of which we take for granted: aesthetics, weather protection, fire resistance, sound reduction, security and more besides. Read our guide to correctly specify the right timber product including finishes for timber external doors, CE marking requirements, moisture movement in external timber doorsets, designing for long LEARN MORE ABOUT TIMBER FRAME CONSTRUCTION Timber frame construction uses timber studs and rails, together with a structural sheathing board, to form a structural frame that transmits all vertical and horizontal loads to the foundations. Use our FAQ and simple guides to find out more about timber building methods, thermal performance, fire protection measures and sole plate requirements. NEWS AND STORIES FROM TRADA The approach is to ‘reduce the height threshold to 11 metres now, and commission research to allow further review of the height threshold’ as the option that best provides public protection. TRADA’s overarching comment on this at this point is that we need to be very careful in how we handle this debate. If we deviate from a

philosophical

NEWS AND STORIES FROM TRADA TRADA’s Panel Guide has been revised. TRADA’s revised Panel Guide (Version 4.1) is a helpful interactive PDF which provides information on the properties, applications and end uses of all the main types of wood-based panel: It is aimed at construction professionals (including specifiers, designers, building engineers, and architects), panel WOOD SPECIES DATABASE It is a very resinous wood, with clearly marked annual rings. It has a straight grain, a fine, uniform texture and is rather heavy, weighing 590 kg/m³ when dried, it is likely that plantaion grown L.sibirica and that grown in more southerly Europe is of lower density. Its heartwood is listed as moderately durable, and its narrow sapwood

means

LEARN MORE ABOUT TIMBER WINDOWS AND DOORS Windows and doors provide so many critical attributes to a building, many of which we take for granted: aesthetics, weather protection, fire resistance, sound reduction, security and more besides. Read our guide to correctly specify the right timber product including finishes for timber external doors, CE marking requirements, moisture movement in external timber doorsets, designing for long WOOD SPECIES DATABASE Wood Species Database. The species database will help you choose the most suitable wood species for your project. It contains the physical properties and illustrations of more than 150 commercial species, reproduced from the popular TRADA Red Books and Wood Information Sheets. Use Cladding Decking Flooring Furniture Heavy structural use

Joinery

INSPIRATIONAL TIMBER CASE STUDIES Read case studies which feature inspirational timber buildings selected for their quality in design and construction. Each study demonstrates why timber was selected and how the design works, including comprehensive technical description, photographs during and after construction, and detail drawings. LEARN MORE ABOUT WOOD PRESERVATIVES Find out more about wood preservative treatments including our wood species guide, mechanical properties of timber, water-borne and solvent treatments, best ways to cut end grain, disposal of treated timber, specifying preservative treatment for wood products NEWS AND STORIES FROM TRADA The approach is to ‘reduce the height threshold to 11 metres now, and commission research to allow further review of the height threshold’ as the option that best provides public protection. TRADA’s overarching comment on this at this point is that we need to be very careful in how we handle this debate. If we deviate from a

philosophical

NEWS AND STORIES FROM TRADA Fire stopping and cavity barriers remain vital; this is because flame height in cavities can extend 5–10 times that of those in open air, due to the ‘chimney effect’. See diagram 33, which stipulates where these are needed. In the case of timber cladding, TRADA’s advice is that a cavity is needed behind cladding to allow it to

breathe

OFF-SITE AND INDUSTRIALISED TIMBER CONSTRUCTION Off-site and industrialised timber construction: Delivering quality and efficiency. Many prefer the versatility of timber frame for panelised, volumetric and hybrid built off-site systems. Other suitable methods include timber post and beam, ‘mass’ construction using cross-laminated timber, and structural insulated panel systems. TRADA | TIMBER RESEARCH AND DEVELOPMENT ASSOCIATION We are dedicated to inspiring and informing best practice timber design, timber specification and use of wood in the built environment

and related fields.

NEWS AND STORIES FROM TRADA TRADA’s first publication on the subject was published in 1944. The basic form of construction has not changed radically, although increasing sophistication in performance and the introduction of new materials have brought detail changes over the years. Flooring is most commonly chipboard, but softwood boards and plywood may be found. TIMBERSIZERPRO EC5 EDITION TimbersizerPro EC5 edition Select the most efficient timber cross-section for your design with this time-saving online software for engineers and architects. timberconnectionsPro EC5 edition Based on the Eurocodes 0, 1 and 5 and their UK National annexes, timberconnections is regularly reviewed and updated to keep abreast of any modifications and changes to the standards. TRADA | TIMBER RESEARCH AND DEVELOPMENT ASSOCIATIONEUROCODESSPAN TABLESWOOD SPECIESCASE STUDIESRESEARCHBOOKS ONLINE Welcome to TRADA. TRADA (The Timber Research and Development Association) is an international membership organisation dedicated to inspiring and informing best practice design, specification and use of wood in the built environment and related fields.

SIGN IN TO MY TRADA

Already a free user or member of TRADA? Sign in here. Interested in downloading a TRADA case study or sampling a range of our comprehensive wood information? Register here for instant free user

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LEARN MORE ABOUT TIMBER WINDOWS AND DOORS Windows and doors provide so many critical attributes to a building, many of which we take for granted: aesthetics, weather protection, fire resistance, sound reduction, security and more besides. Read our guide to correctly specify the right timber product including finishes for timber external doors, CE marking requirements, moisture movement in external timber doorsets, designing for long

SPAN TABLES

Bookshop: Eurocode 5 span tables. Now in its 4th edition, the TRADA Span Tables publication is a must for any designer or builder.. Easy to look up tables allow the reader to choose the size of solid softwood timber members necessary to give adequate support to floors, ceilings and roofs in dwellings. EXPERT TIMBER ADVICE AND TIMBER DESIGN GUIDANCE We provide independent, authoritative timber design guidance to specifiers,engineers, contractors and the timber industry We link timber specifiers and timber purchasers with timber industry members through our Find a Supplier directory. LEARN MORE ABOUT CLADDING Timber cladding is very much in vogue. Designed well, it can produce a beautiful, long-lasting, low maintenance rain screen. However, when mistakes are made in the design it is usually very visible. NEWS AND STORIES FROM TRADA The latest news and stories from TRADA including technical information, timber industry news, Construction Products Association (CPA) reports and our latest event updates NEWS AND STORIES FROM TRADA TRADA’s revised Panel Guide (Version 4.1) is a helpful interactive PDF which provides information on the properties, applications and end uses of all the main types of wood-based panel: TIMBERSIZERPRO EC5 EDITION TimbersizerPro EC5 edition Select the most efficient timber cross-section for your design with this time-saving online software for engineers and architects. timberconnectionsPro EC5 edition Based on the Eurocodes 0, 1 and 5 and their UK National annexes, timberconnections is regularly reviewed and updated to keep abreast of any modifications and changes to the standards. LEARN MORE ABOUT TIMBER FRAME CONSTRUCTION Timber frame construction uses timber studs and rails, together with a structural sheathing board, to form a structural frame that transmits all vertical and horizontal loads to the foundations. Use our FAQ and simple guides to find out more about timber building methods, thermal performance, fire protection measures and sole plate requirements. TRADA | TIMBER RESEARCH AND DEVELOPMENT ASSOCIATIONEUROCODESSPAN TABLESWOOD SPECIESCASE STUDIESRESEARCHBOOKS ONLINE Welcome to TRADA. TRADA (The Timber Research and Development Association) is an international membership organisation dedicated to inspiring and informing best practice design, specification and use of wood in the built environment and related fields.

SIGN IN TO MY TRADA

Already a free user or member of TRADA? Sign in here. Interested in downloading a TRADA case study or sampling a range of our comprehensive wood information? Register here for instant free user

access.

LEARN MORE ABOUT TIMBER WINDOWS AND DOORS Windows and doors provide so many critical attributes to a building, many of which we take for granted: aesthetics, weather protection, fire resistance, sound reduction, security and more besides. Read our guide to correctly specify the right timber product including finishes for timber external doors, CE marking requirements, moisture movement in external timber doorsets, designing for long

SPAN TABLES

Bookshop: Eurocode 5 span tables. Now in its 4th edition, the TRADA Span Tables publication is a must for any designer or builder.. Easy to look up tables allow the reader to choose the size of solid softwood timber members necessary to give adequate support to floors, ceilings and roofs in dwellings. EXPERT TIMBER ADVICE AND TIMBER DESIGN GUIDANCE We provide independent, authoritative timber design guidance to specifiers,engineers, contractors and the timber industry We link timber specifiers and timber purchasers with timber industry members through our Find a Supplier directory. LEARN MORE ABOUT CLADDING Timber cladding is very much in vogue. Designed well, it can produce a beautiful, long-lasting, low maintenance rain screen. However, when mistakes are made in the design it is usually very visible. NEWS AND STORIES FROM TRADA The latest news and stories from TRADA including technical information, timber industry news, Construction Products Association (CPA) reports and our latest event updates NEWS AND STORIES FROM TRADA TRADA’s revised Panel Guide (Version 4.1) is a helpful interactive PDF which provides information on the properties, applications and end uses of all the main types of wood-based panel: TIMBERSIZERPRO EC5 EDITION TimbersizerPro EC5 edition Select the most efficient timber cross-section for your design with this time-saving online software for engineers and architects. timberconnectionsPro EC5 edition Based on the Eurocodes 0, 1 and 5 and their UK National annexes, timberconnections is regularly reviewed and updated to keep abreast of any modifications and changes to the standards. LEARN MORE ABOUT TIMBER FRAME CONSTRUCTION Timber frame construction uses timber studs and rails, together with a structural sheathing board, to form a structural frame that transmits all vertical and horizontal loads to the foundations. Use our FAQ and simple guides to find out more about timber building methods, thermal performance, fire protection measures and sole plate requirements. NEWS AND STORIES FROM TRADA The latest news and stories from TRADA including technical information, timber industry news, Construction Products Association (CPA) reports and our latest event updates LEARN MORE ABOUT CLADDING Timber cladding is very much in vogue. Designed well, it can produce a beautiful, long-lasting, low maintenance rain screen. However, when mistakes are made in the design it is usually very visible. LEARN MORE ABOUT WOOD PRESERVATIVES Find out more about wood preservative treatments including our wood species guide, mechanical properties of timber, water-borne and solvent treatments, best ways to cut end grain, disposal of treated timber, specifying preservative treatment for wood products NEWS AND STORIES FROM TRADA The latest news and stories from TRADA including technical information, timber industry news, Construction Products Association (CPA) reports and our latest event updates INSPIRATIONAL TIMBER CASE STUDIES Read case studies which feature inspirational timber buildings selected for their quality in design and construction. Each study demonstrates why timber was selected and how the design works, including comprehensive technical description, photographs during and after construction, and detail drawings. NEWS AND STORIES FROM TRADA In a move which is not entirely unpredicted, the government launched a consultation on 20 January 2020, in which it proposes an 11 metre – rather than 18 metre – threshold in relation to non-combustible external wall materials. OTHER TIMBER TECHNICAL GUIDANCE Other Technical Guidance. We try to publish all our guidance within a series. However, occasionally it is necessary to publish something that does not – and these are all located in this section. NEWS AND STORIES FROM TRADA Professionals undertaking surveys of timber frame buildings should have an understanding of the overall design and typical detailing employed in this form of construction, according to a revised Wood Information Sheet ‘Surveys of timber framed houses’. TIMBER INFORMATION, PUBLICATIONS AND TECHNICAL GUIDANCE Timber won't rot if it's kept dry to a moisture content below 20%. When it's used outside, this may not be possible. There are two solutions to this problem, either you can use a naturally durable timber - such as oak or western red cedar - or you can use a non-durable softwood that's been treated with a TRADA'S WOOD INFORMATION SHEETS TRADA's Wood Information Sheets (WIS) are the definitive guide to good timber design and provides an introduction to many timber topics including timber frame construction, Cross-Laminated Timber (CLT) and sustainable timber sourcing. YOU'RE JUST ONE STEP AWAY... Mr Mrs Ms Miss Dr Lady Lord Professor Sir Please confirm that you agree to abide by our Terms & Conditions for using this website Please confirm that you agree to us using your personal data in accordance with our Privacy Policy -------------------------

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COVID-19

TRADA’s staff is predominantly working remotely following official guidance from the Government, but many of its services are still

running.

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TTJ TIMBER INNOVATION AWARD 2020: CALL FOR ENTRIES TRADA is officially calling for entries on behalf of the prestigious TTJ Awards hosted by the Timber Trade Journal.

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ELEANOR PALMER LAB

The Eleanor Palmer Science Lab is a small but carefully crafted timber building, one which uses simple timber construction techniques to create an inventive space dedicated to teaching science to young

children.

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“THE GREAT STORY OF THE LITTLE PEOPLE” “The Great Story of the Little People” is a sculptural series and folklore fairytale story told by Danish recycle artist Thomas Dambo.

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WOOD AWARDS 2020 CALL FOR ENTRIES The Wood Awards: Excellence in British Architecture and Product Design has now launched its 2020 call for entries.

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TIMBER 2020 INDUSTRY YEARBOOK Our Timber 2020 Industry Yearbook is now available to view online, with key timber topics, technical features and prizewinning case

studies.

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HEALTHY BUILDINGS

We have compiled an extensive list of TRADA resources which elaborate on the role of healthy buildings in supporting the physical, psychological and social well-being of people.

Find Out More

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COVID-19

TRADA’s staff is predominantly working remotely following official guidance from the Government, but many of its services are still

running.

Find Out More

TTJ TIMBER INNOVATION AWARD 2020: CALL FOR ENTRIES TRADA is officially calling for entries on behalf of the prestigious TTJ Awards hosted by the Timber Trade Journal.

Find Out More

ELEANOR PALMER LAB

The Eleanor Palmer Science Lab is a small but carefully crafted timber building, one which uses simple timber construction techniques to create an inventive space dedicated to teaching science to young

children.

Find Out More

“THE GREAT STORY OF THE LITTLE PEOPLE” “The Great Story of the Little People” is a sculptural series and folklore fairytale story told by Danish recycle artist Thomas Dambo.

Find Out More

WOOD AWARDS 2020 CALL FOR ENTRIES The Wood Awards: Excellence in British Architecture and Product Design has now launched its 2020 call for entries.

Find Out More

TIMBER 2020 INDUSTRY YEARBOOK Our Timber 2020 Industry Yearbook is now available to view online, with key timber topics, technical features and prizewinning case

studies.

Find Out More

HEALTHY BUILDINGS

We have compiled an extensive list of TRADA resources which elaborate on the role of healthy buildings in supporting the physical, psychological and social well-being of people.

Find Out More

WELCOME TO TRADA

TRADA (The Timber Research and Development Association) is an international membership organisation dedicated to inspiring and informing best practice design, specification and use of wood in the built environment and related fields. We pride ourselves in providing independent, authoritative design and technical guidance through this website, on-line software, printed publications, e-books, and our telephone helpline. We link specifiers and purchasers with timber industry members through our Find a supplier directory. As a member  you can access all our online information and resources. By registering for free , you can view some of our published series and examples of others.  Please call us on 01494 569601 if you need any help.

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PROMOTE YOUR OFFERINGS TO THE TOP UK AUDIENCE OF TIMBER

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SAVE TIME AND MONEY BY GETTING AUTHORITATIVE ADVICE QUICKLY EQUIP YOUR STAFF TO UPSELL AND CROSS SELL YOUR PRODUCT RANGE

Become a Member

SAVE TIME AND MONEY USING OUR AUTHORITATIVE ADVICE BE CONFIDENT ABOUT TAKING ON MORE CHALLENGING TIMBER PROJECTS AVOID MAKING MISTAKES BY OBTAINING BEST PRACTICE GUIDANCE

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BE CONFIDENT ABOUT TAKING ON MORE CHALLENGING TIMBER PROJECTS GET ADVICE QUICKLY ONLINE AND THROUGH OUR HELPLINE AVOID MAKING MISTAKES BY OBTAINING BEST PRACTICE GUIDANCE

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DESIGN THE BUILDINGS OF THE FUTURE ACCESS OUR FREE ACADEMIC LEARNING RESOURCES IMPARTIAL GUIDANCE, DESIGN DETAILS AND CASE STUDIES

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SAVE TIME AND MONEY USING OUR AUTHORITATIVE ADVICE AVOID MAKING MISTAKES BY OBTAINING BEST PRACTICE GUIDANCE IMPARTIAL GUIDANCE, DESIGN DETAILS AND CASE STUDIES

Become a Member

PROMOTE YOUR OFFERINGS TO THE TOP UK AUDIENCE OF TIMBER

SPECIFIERS / BUYERS

SAVE TIME AND MONEY BY GETTING AUTHORITATIVE ADVICE QUICKLY EQUIP YOUR STAFF TO UPSELL AND CROSS SELL YOUR PRODUCT RANGE

Become a Member

SAVE TIME AND MONEY USING OUR AUTHORITATIVE ADVICE BE CONFIDENT ABOUT TAKING ON MORE CHALLENGING TIMBER PROJECTS AVOID MAKING MISTAKES BY OBTAINING BEST PRACTICE GUIDANCE

Become a Member

BE CONFIDENT ABOUT TAKING ON MORE CHALLENGING TIMBER PROJECTS GET ADVICE QUICKLY ONLINE AND THROUGH OUR HELPLINE AVOID MAKING MISTAKES BY OBTAINING BEST PRACTICE GUIDANCE

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