What are the flame spread ratings for polypropylene outdoor seating?
Polypropylene outdoor seating is widely used due to its durability and resistance to weathering, but its flammability is a critical safety consideration. The flame spread rating for polypropylene typically depends on its formulation and any added flame-retardant treatments. According to fire safety standards like ASTM E84 (Standard Test Method for Surface Burning Characteristics of Building Materials), untreated polypropylene usually has a high flame spread index, making it more susceptible to rapid burning. However, flame-retardant-treated polypropylene can achieve lower ratings, improving its suitability for public spaces. Always verify compliance with local fire codes and industry standards when selecting outdoor seating materials.
