All timber products should be treated in their final shape and form.
Any surface exposed by drilling or cutting must be retreated with a suitable cut end preservative (Protim Solignum XJ™ Clear Timber Protective preservative, or similar is recommended).
Failure to re-treat may negate the value of the preservative and is a requirement of the guarantee.
Rip sawing, thicknessing and planing are not permitted unless the timber is subsequently re-treated to the original specification.