Most notably is the whether the fire will be gas or wood burning. Trex decking will soften as low as 176 degrees Fahrenheit.

Does Trex burn?

Fire-Resistance Rating Trex decking is classified as a Class C, or Class III, building material. As a result, Trex lumber will burn as wood does, even though it contains several other composite materials. … So if a fire occurs, your Trex lumber will burn just like the wood on any traditional wood deck.

Can you put a fire pit on composite decking?

Never, never, NEVER place a fire put directly on a wooden or composite deck. … are commonly used in composite decking, so the risk of warping and melting under high-heat conditions, like those produced by a fire pit, is something to be aware of as well.