UL 723 (Test for Surface Burning Characteristics of Building Materials)

UL 723, also known as the Tests for Surface Burning Characteristics of Building Materials, is a standard that evaluates how easily materials ignite and how quickly fire spreads across their surfaces. It measures factors like flame spread and smoke development when a material is exposed to fire under controlled conditions. The results help determine the material’s fire safety classification, guiding building codes and fire prevention decisions to ensure structures are safer and flames are less likely to spread rapidly.