UL fire ratings connote tested and certified products that meet performance and safety objectives per building codes. Architects and building contractors rely upon UL fire ratings to demonstrate compliance with building codes that stipulate the requirement of materials that must possess certain properties of fire propagation resistance.
Consumers, contractors and builders subsequently look to Underwriters Laboratories fire ratings when purchasing and using building materials. UL fire ratings for exterior walls and interior surfaces indicate which materials in a variety of categories are fire-resistant to a degree that agrees with National Fire Protection Association codes and standards as well as local building and fire codes.
Central to the matter of UL fire ratings, building codes and fire codes is the safety of a building's inhabitants and inhabitants of nearby edifices.
UL fire ratings for walls also help to indicate what architectural features and materials to use in conjunction with fire-rated walls, such as doors. Ratings enable builders to install doors and windows with compatible UL fire ratings. Manufacturers disclose such ratings in product descriptions, and products bear a UL-rated or UL-certified sticker that indicates all relevant information to the builder, contractor or consumer.
The NFPA devises many of the codes and standards that local building code divisions uphold. UL is a global independent safety science company that tests building materials for both commercial and residential purposes. Since UL fire ratings adhere to NFPA standards and local building codes, the UL fire rating potentially indicates to building inspectors that materials within the building and exterior walls comply with local building and fire codes.