What moisture content should I ask for cladding boards to be supplied at?
For the UK a moisture content of 16% (with a +/-2% tolerance) should be specified. Alternatively, green or freshly cut timber may be used as long as the profile and fixings are suitable to allow for the initial shrinkage. There will always be a higher risk of warping, cupping and splitting with the use of green timber, and care should therefore be taken with the specification for timber quality and with the design detail.
For more detailed information about timber cladding, take a look at our book External Timber Cladding, a comprehensive guide to the design and specification of timber cladding.
We also provides a range of services for building designers and product manufacturers to assist with timber cladding queries, as well as training and cpd.
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