Details Component: Material: Note: Council performance requirements are additional to those stated in the relevant national standard and specific to materials installed in Christchurch City Suppliers Component: Material: Certificate status: Green – quality assurance and auditing certificates are current Yellow – quality assurance or auditing certificates will expire within the next 6 months. The material’s approval will lapse at that date unless new certificates are received Red – material is not approved as quality assurance or auditing certificates have expired