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27 Changes to the tests and requirements for fire and cladding

The UK’s No 1 producer of engineered wood panels

Published in 2021 by:

Chiltern House, Stocking Lane Hughenden Valley, High Wycombe Buckinghamshire HP14 4ND

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While every effort is made to ensure the accuracy of the articles included, the company cannot accept liability for loss or damage arising from the information supplied. The opinions expressed do not necessarily represent or reflect the views of TRADA or the publisher. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form, by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior permission of the copyright owners. © 2021 Warringtonfire Testing and Certification Ltd The publisher gratefully acknowledges the support of the firms whose advertisements appear in this publication. While every care has been taken in compiling this publication, the publisher cannot accept responsibility for any inaccuracies, or for the products or services advertised.

All photographs and illustrations are © Warringtonfire Testing and Certification Limited unless otherwise credited.

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We are committed to sustainable forest management and this publication is printed by Buxton Press who are certified to ISO14001:2015 Standards (Environmental Management System). Buxton prints only with 100% vegetable based inks and uses alcohol free printing solutions, eliminating volatile organic compounds as well as ozone damaging emissions.

ISBN: 978-1-909594-86-9

Cover image:

Stroud Christian Community Chapel. Photo: Fernando Manoso

07 Foreword: An unprecedented year Nick Milestone 09 TRADA membership for the timber industry 10 Review of the year: 2020 – a year for online events Rupert Scott 12 University Engagement Programme: Challenges, the curriculum and

climate literacy – a bright future for timber and engagement

Tabitha Binding 16 Wood Awards winner: The Rye Apartments

21 Wood Awards winners: Best of the rest

Spotlight on sustainability

22 Why wood costs less: the path to net zero Sarah Virgo 28 Wood fibre thermal performance and sequestered carbon Adrian Judd

34 Changing the narrative: Biodiversity, Forestry and Wood report Eleanor Harris

37 Architects Declare: one year on Kat Scott

41 Structural timber: delivering quality and sustainability assurances Andrew Carpenter 46 Ten things to know about engineering timber frames Steve Corbett 57 Stacking up off-site timber construction financials Dr Mila Duncheva 63 Mass Timber Office Forum Oliver Hartley-Booth 71 Office refurbishments Kelly Harrison 79 Expanding into the airspace: why engineered timber is a good fit Lee Murphy 85 Moisture management Nick Clifford & Lewis Taylor 93 Service life performance of wood in construction Ed Suttie 104 Alternative UK timber species Steven Adams & Dan Ridley-Ellis 118 Brimstone cladding test site Tom Barnes 127 Changes to the tests and requirements for fire and cladding Mostafa Jafarian 134 Stepping up decking standards Janet Sycamore 141 How do you specify preservative-treated wood? Gordon Ewbank 146 The role of the passive fire protection installer and maintainer Ross Newman 155 Fire Door Safety Week: why fire door safety can’t be left to chance Helen Hewitt 162 Design steps to stair safety Kevin Underwood 170 Get the most from TRADA membership 173 How to use this directory 174 Alphabetical list of TRADA members 204 Buyers’ guide index 216 List of advertisers

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