Softwood continues to be the most popular external cladding for most buildings. Western Timber Research and Development Association (). Species all the species are durable and suitable for external use for a minimum 25 years. Imported western red cedar – very good for cladding, light, pliable. Page 1. Cladding Installation details including;. Head, Cill and Jamb. TRADA Drawings supplied by.
Click here to find out how to access this document. There are many different profiles, but TRADA recommends that boards should be mm maximum width, to limit the effects of any moisture movement across the board. The Amber document status indicator indicates that some caution is needed when using this document – it is either: Home Membership Wood Information Publications.
Depending on its location, wood cladding may require pre-treatment with a fire retardant, which tgada be compatible with any preservative treatments and coatings. How can I remove staining that has developed on timber cladding? When selecting species, consider the natural durability of the wood and the options for preservation and coating.
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There are Building Regulations in place which are intended to restrict the tradda of fire. Offers guidance to designers and specifiers to enable best practice principles to be applied to external timbrr cladding.
Measures that can be taken include careful building design including water-shedding details to direct rainfall away from the cladding and protecting absorbent surfaces around the cladding from the runoff during the initial weathering process.
In the summer of the idyllic shoreline of Lymington-Keyhaven Nature Reserve was home to a pair of lightweight timber cabins, known collectively as The Observatory. However, when mistakes are made in the design it is usually very visible.
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Tongued cladeing grooved boards should be further limited, preferably to mm max mmwith only kiln-dried wood used. There are a number of ways of removing stains, from washing to the application of chemical cleaners. There are options for discreet fixing, but this is an area where specific advice should be sought from an expert source. Softwood is the most common choice for cladding in the UK, with home-grown species increasingly selected.
Supersedes the edition. Quick Links ; Wood Species Database. As the boards weather, they can leach out extractives that can stain other boards, exteranl the surfaces of other materials below or adjacent to them.
Save time and money using our authoritative advice Avoid externsl mistakes by obtaining best practice guidance Impartial guidance, design details and case studies. How can I prevent my cladding from leaching out extractives? Eurocodes Span Tables Wood Species.
Horizontal boards cannot be easily bent around tight radial curves, particularly if they have a tongued and grooved profile. Stainless steel or non-ferrous fasteners are preferred to prevent long term corrosion and possible chemical reaction with some timber species. TRADA also recommends claddjng any individual part of the board, for example the tongue or top edge of a featheredge board, should tarda be less than 9mm in thickness.
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External timber cladding
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