If you’re responsible for selecting PPE for your worksite, you’ve likely come across inherent and treated FR fabrics. Understanding the differences is important, especially since price and performance may vary significantly.
FR treated fabrics are the more economical of the two choices. They are based on cotton and get their flame retardant properties from the chemical treatment that is applied to the fabric. This chemical treatment is applied in such a way that it fully penetrates the fiber, and as such is bonded throughout the entire fabric. As a result, the fabric becomes flame retardant and keeps this property throughout the lifetime of the garment.
Inherent fabrics contain fibers that are naturally flame retardant such as modacrylics and aramids. These fibers provide excellent protection against flames and heat.
In summary, the choice between inherent and treated FR fabrics depends on safety requirements and budget. Treated fabrics offer cost-effective protection, particularly in rough environments or where molten metal exposure is a concern. Inherent fabrics, though more expensive, deliver long lasting performance, superior arc protection, lighter weight, and better colour retention. Understanding these differences helps safety managers balance protection, comfort durability, and cost when selecting PPE.
