CAN ULC-S639-2018 PDF Download

The CAN ULC-S639-2018 standard specifies the requirements for prefabricated steel liner assemblies used in masonry fireplaces. These assemblies include a flue damper, smoke chamber, and related accessories. They serve as an alternative construction method to traditional fire brick liners and metal dampers.

The intention of this standard is to ensure that the steel liners can be properly installed according to relevant building codes and the manufacturer's installation instructions. The standard does not apply to factory-built fireplaces, inserts, or space heaters.

By providing specific guidelines and requirements, the standard ensures that steel liner assemblies meet the necessary safety and performance standards for solid fuel-burning masonry fireplaces.