Wrot timber
The term ‘wrot timber’ is derived from the word ‘wrought’, meaning something that has been fashioned in a specified way, and refers to timber that has had one or more of its surfaces planed smooth, for example, PAR timber, which has been ‘Planed All Round’.
It may also be referred to as; wrought timber, dressed timber, finished timber or planed timber.
This is as opposed to unwrot, or sawn timber, which has been sawn to size but has not been finished and is rough.
[edit] Related articles on Designing Buildings Wiki
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