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The Living Building Challenge is a holistic sustainable building program created by the International Living Future Institute.
As part of their construction material focus, the Institute released a “Red List” covering building materials and “building material ingredients” that should be avoided.
The Red List provides a great basis for material choice in the design of a healthy home. The institute has also developed a “Declare” certification for products – basically an “ingredients list” for building materials.
Of particular note in the wood sector is the use of arsenic and creosote as a wood preservative. Arsenic, in the form of CCA wood preservatives are particularly common in New Zealand for exterior wood applications, like decking.