Construction & Demolition
Construction and demolition waste comes from constructing new buildings, renovating existing buildings and demolishing old buildings…and generally consists of the following:
- Concrete, reinforced and un-reinforced
- Gib board
- Carpets and flooring materials
- Clay, rock and sand
- Wood fibre materials like hardboard, softboard, particle board, not containing asbestos
- Ceramic, clay and concrete pavers
- Pipes and tiles
- Uncontaminated soils
- Chip seal and cured asphalt
For more detailed guidance on what building materials can be recycled, see REBRI website
For who may take your recycled materials in Auckland, see the Council's search page and select the type of material.
Most C&D waste is cleanfill material. Cleanfill is defined as inert materials that will not cause any adverse environmental or health effects.
Cleanfill sites are often old or even active quarries, which use cleanfill to fill in the hollows created by excavation. Only certain types of cleanfill are allowed to be disposed of at these sites. There are, for example, multiple cleanfill sites in the Canterbury region.
Many of these materials can be re-used, recycled or composted (for example, clean gib board offcuts, as gypsum and cardboard are useful as soil conditioners.)
Savings in waste disposal costs can be made when materials are diverted from landfill.
Although it costs less to dump in cleanfills than landfills, dumping mixed C&D materials without resort to waste minimisation activity is a waste of potentially recoverable materials. Note that dumping anything toxic at a cleanfill site can lead to prosecution, especially if groundwater is affected.