the timber network
Wood quality norms

Wood quality norms

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The following pages are not the official rules for timber grading, but summaries that are provided for reference only.

Though they were produced to the best of our knowledge, we shall bear no liability for any omission, error or translation inaccuracy that they might contain.

To consult the official grading rules you should always contact the Associations, Councils or other institutions responsible for them. Whenever possible we provide links to the websites of these institutions.