Is there a difference between "flame resistant" and "flame retardant"?

Yes. Although the words “flame” and “fire” can be used interchangeably, the real point of difference in these two terms lies in the words “resistant” and “retardant.”


A material that is “flame resistant” is inherently resistant to igniting and will not melt or drip when exposed to extreme heat. While flame resistant materials can catch fire, they’re not likely to ignite just from being near fire and many flame resistant materials will choke a fire to the point of extinguishing it.


A material that is “flame retardant” is one that has been chemically treated to self-extinguish if it catches fire. It will expel gases to suppress a fire. Fire retardant chemicals are most commonly used on plastics and furniture to reduce the chance of a fire spreading.