There are no cross industry standard specifications for wood recycling. Timber recyclers generally will accept nearly all soft and hardwood materials including pallets. Plywood is also accepted.

Restrictions are imposed with regard to contaminants. Metals are divided into two categories: ferrous and non-ferrous. Ferrous contamination such as nails and screws is usually acceptable — these can be readily removed by magnetic extraction.

Non-ferrous materials are not so easily removed and recyclers often ask for these to be removed in advance. Such items would include aluminium window catches and other fittings.

Other materials that are excluded include: MDF (medium density fibreboard), paper and card, laminated material and railway sleepers. Some restrictions may also be imposed on chipboard.