How does PVC compare to polyethylene in outdoor sofa flammability?

When choosing outdoor furniture, flammability is a critical factor, especially for materials like PVC and polyethylene. PVC (polyvinyl chloride) is inherently flame-resistant due to its chlorine content, which slows combustion. It tends to self-extinguish when exposed to fire, making it a safer option for outdoor sofas. Polyethylene, on the other hand, is a hydrocarbon-based plastic that melts and burns more easily, requiring flame retardants for improved safety.

In direct comparison, PVC generally outperforms polyethylene in fire resistance, but both materials can be treated for enhanced flammability ratings. Always check manufacturer specifications for fire safety certifications like UL94 or ASTM standards to ensure compliance with local regulations. For outdoor use, consider environmental factors like UV exposure, which can degrade flame-retardant additives over time.