The T6 exemption allows you to chip, shred, cut or pulverise waste wood and plant matter to make it easier to store and transport, or to convert it for use.
The waste treated by these methods must be suitable for its intended use, which can include feedstock for producing products such as panel board, mulch, surfacing tracks (paths and bridleways) or fuel.
Types of activity you can carry out
- chipping untreated waste wood to use as fuel in a boiler to provide heat
- cutting waste wood into a suitable size to manufacture chipboard
- shredding waste plant matter before moving it to an authorised facility for composting
Types of activity you cannot carry out
- sort out waste wood or waste plant tissue from other types of waste as this exemption only allows wood and plant tissue waste
- treat waste where the main purpose is to dispose of it to landfill or incinerate it
- compost, burn or manufacture products from waste wood (see related exemptions)
- treat wood that is hazardous waste
You don’t need to register a T6 for forestry maintenance work where the virgin timber is cut, chipped or shredded and is left on the ground or transported off-site for use elsewhere.
Types of waste you can treat
The waste codes are listed in the List of Wastes (LoW) Regulations. You need to make sure your waste fits within the relevant waste code and description.
|Waste code||Type of waste|
|020103, 200201||Plant tissue waste|
|030101, 030301, 170201||Wood|
|150103||Wooden packaging only|
You cannot treat wood that has been sorted from mixed sources at a waste treatment facility.
Amount of waste you can treat
You can treat or store up to 500 tonnes of waste over any 7-day period.
You can store waste for up to three months after treatment.
Other things you need to know
you have registered one of the following exemptions, and intend to chip or shred the waste before it is treated at the same place, you do not need to register this exemption:
you are chipping treated or coated wood, you must not use this for construction, burning as fuel, mulch, animal bedding or as feedstock for composting. The only suitable use for treated or coated wood is the U9 exemption for manufacturing finished goods
the T6 exemption has been modified to allow processing of non hazardous ‘treated’ wood but only from the specific sources (listed above). You cannot process wood that has been sorted from mixed sources at a waste treatment facility
You can use chipped or shredded untreated waste wood under a number of exemptions:
Register a T6 exemption
You need to register this exemption with the Environment Agency if you meet the requirements:
If you want to treat more than the amount of waste allowed under this exemption, you must apply for an environmental permit.
Hazardous waste – see How to classify different types of waste.
Untreated wood – wood that has not been treated with oils, tar oil preservatives, waterborne preservatives, organic based preservatives, boron and organo-metallic based preservatives, boron and halogenated flame retardants and surface treatments.