Question: Does ASTM E84 measure of heat transmission through a tested surface?
Answer: No it does not. ASTM E84 is looking at the surface burning behavior of a building material when it is exposed to flames. For example, what is the flame spread and smoke density when flames hit a ceiling. Flame spread and smoke developed index are reported. However, there is not necessarily a relationship between these two measurements. The resulting values are stated in inch-pound units,which is to be regarded as standard. This standard is used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions. The test does not assess the fire-hazard or fire-risk assessment of the materials, products, or assemblies under actual fire conditions..