PVC is inherently a self-extinguishing fire retardant material due to the abundance of chlorine in its formulation, with burning characteristics closer to that of paper, wood and straw. … These materials have a very high risk of igniting and will maintain the fire.

Does PVC melt in fire?

Polyvinyl Chloride has very poor heat stability. For this reason, additives that stabilize the material at higher temperatures are typically added to the material during production. Polyvinyl Chloride emits toxic fumes when melted or subject to a fire.

Does PVC Catch fire & How?

PVC is resistant to ignition. The temperature required to ignite rigid PVC is more than 150oC higher than that required to ignite wood. The ignition resistance of common flexible PVC formulations is lower, but with specialised formulations it may be significantly increased.