Composite Boards Most wood species are rated Class C for fire resistance, but you can build safer with a Class A–rated composite decking like AmeraDeck, made from PVC and wood fiber. Not all composite decking is created equal, though—be sure to check fire ratings before you buy. $2.15 per lineal foot.Click to see full answer. Regarding this, is Trex decking fire rated? 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.Also, what wood is most fire resistant? It was hypothesized that the painted redwood treated with the fire retardant spray would be the most fire resistant. Redwood was the best overall wood type, and the non-painted wood pieces treated with fire retardant spray was the best overall solution. Thereof, is composite decking non combustible? But there aren’t currently any wood, plastic, or wood-plastic composite deck boards that have a noncombustible rating. We tested several different types of commercially available plastic and wood-plastic composite deckboards, as well as solid redwood decking.What is class A fire rating?Class A fire retardants have a flame spread rating of between zero and 25. These materials are effective against severe fire exposure. Class B fire retardants have a flame spread rating of between 26 and 75. These materials are effective against moderate fire exposure.
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