You may be starting a new insulation project or considering replacing the insulation you have as the cold winter months set in but have you thought about the fire resistance of the material you’re using? Before fitting insulation, it is important to consider how it might behave in a fire to ensure you are making the best choice and don’t end up with a material that catches fire easily or readily emits toxic smoke. With this in mind here are the most common insulation types together with information on how resistant they are to fire.
Mineral is regarded as one of the best materials when it comes to fire resistance. It is able to withstand heat more than 700 ºF above that of the average home fire.
Many people assume spray foam to be flammable but it actually contains fire retardants. The material also fills air gaps more effectively than other insulation types cutting off the air that is a major ingredient allowing fires to spread.
Foam board might be cheap and readily available but it certainly isn’t a good performer when it is subjected to heat from fires. Add to this the toxic fumes you get when it burns and you may need to reconsider installing it