R-value (insulation) contain no trapped CFCs or HFCs (e.g., half-pound low density foams). On certain brands, twenty-year tests have shown no shrinkage or reduction in insulating value. This has led to controversy as how to rate the insulation of these products. Many manufacturers will rate the R-value at the time of manufacture; critics argue that a more fair assessment would be its settled value. The foam industry adopted the LTTR (Long-Term Thermal Resistance) method, which rates the R-value based on a 15-year weighted average. However, the LTTR effectively provides only an eight-year aged R-value, short in the scale of a building that
Royal Commission into the Building and Construction Industry the establishment of the Office of the Australian Building and Construction Commissioner (ABCC), an independent statutory authority responsible for monitoring and promoting workplace relations in the Australian building and construction industry. The ABCC was active between October 2005 and May 2012, when, following enactment of the , its functions were superseded by Fair Work Building and Construction, an agency of the Australian government. In May 1997 the Federal Government, with agreement from the States, prepared a National Building Industry Code of Practice. The government supplemented the Code with Implementation Guidelines. Fundamentally, the Code and the Guidelines were an attempt to