Is the lagging material fire retardant?
“Fire retardant” usually refers to material itself or clothing made from materials. (You typically spray on a chemical to make something “fire retardant”) and is not applicable to our products. We are required to test our products per ASTM E-84,Surface Burning Characteristics of Building Materials, which is the industry testing standard. This 25-foot tunnel test measures both flame spread and smoke developed and is the same as the NFPA 255, UBC 42-1 and UL 723. The flammability classification of a material is determined by comparing the test results with standards established by the National Fire Protection Association (NFPA 701). To merit a Class A rating, a product must have a smoke developed rating between 0 and 450 as well as having a flame spread rating of less than 25.
