The May 2010 fire that destroyed this net-zero home in Hudson, Quebec, is thought to have started in a too-thick layer of freshly applied spray polyurethane foam
The May 2010 fire that destroyed this net-zero home in Hudson, Quebec, is thought to have started in a too-thick layer of freshly applied spray polyurethane foam

Three fires and a death. On July 1, 2011, Massachusetts state fire marshal Stephen D. Coan issued a memorandum to all state fire-department heads noting that "at least three fires, one being a fatal fire, are believed to have been started during the application of spray foam insulation, and currently remain under investigation." The memorandum went on to urge local fire officials to work with building departments to "make contractors in your communities aware of this potential fire hazard and encourage that they follow application instructions accurately." Finally, it requested that department heads inform the fire marshal's office of any future fires involving freshly applied spray foam.

Although the memorandum itself provided no further information on the fires in question, Timothee Rodrique, director of the state's division of fire safety, identified them as follows:

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