What are the differences in flame spread ratings between PVC and polypropylene outdoor ottomans?
When choosing outdoor ottomans, understanding flame spread ratings is crucial for safety. PVC (polyvinyl chloride) and polypropylene are common materials, but they differ significantly in fire resistance. PVC typically has a higher flame spread rating due to its chlorine content, which can slow combustion but releases toxic fumes when burned. Polypropylene, a thermoplastic polymer, tends to melt and drip under heat, potentially reducing flame spread but posing other risks. Both materials meet varying flammability standards, so checking certifications like UL or ASTM is essential. For outdoor use, polypropylene may offer better performance in high-heat environments, while PVC provides durability. Always prioritize fire-resistant designs for safer outdoor spaces.
