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From Science Daily

Researchers in the United States are calling for a change to the US building codes, following a study showing that the mandatory flame retardants routinely added to foam insulation are not only harmful to human health and the environment, but also make no difference to the prevention of fire in buildings where a fire-safe thermal barrier already exists. Such a change would bring the US building codes in line with regulations in Sweden and Norway.

The research team, which is drawn from US-based centres of excellence including the University of California and the Lawrence Berkeley National Laboratory, conducted a thorough review of fire safety literature since the mid-1970s and conclude that the addition of halogenated organic compounds to plastic insulation materials such as polystyrene, polyisocyanurate and polyurethane is costly, ineffective and environmentally damaging. Their conclusions are published in the latest issue of the journal Building Research and Information…