13 December 2017

Giving exposed timber a long and safe life

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Exposed timber structures give buildings warmth and beauty, but can be vulnerable to decay and damage if they are not properly specified. TRADA’s new Wood Information Sheet (WIS) Specifying externally exposed structural timber outlines the building regulations and measures required to ensure the safe and prolonged life of externally exposed timber structures. 


Whether it’s picturesque post and beams used in period properties, engineered wood in modern developments or solid sections of wood in footbridges and access walkways, maintaining and repairing exposed timber structures should always be a top priority. 


Damp is the biggest cause of problems in exposed timber and results from moisture which, over a prolonged period of time, leads to rot, fungal decay and insect infestation. To avoid dimensional change, distortion and disintegration, it is essential that moisture content is controlled. Failure to do so can wreak havoc on externally exposed structural timbers, not only causing damage aesthetically but structurally, with the result that they are no longer adequate to bear the loads placed upon them. 


From specifying preservative treatment and protecting against corrosion, movement and distortion caused by water damage to preservative treatments, drainage, separation and ventilation solutions and guidance on the desired service life of timber, TRADA’s new WIS Specifying externally exposed structural timber helps members stay one step ahead by knowing what to look out for. 


Members can download a free copy of the WIS Specifying externally exposed structural timber. If you are not a member, WIS sheets are available to purchase online in PDF and hardcopy at the TRADA Bookshop.