Branched glycidyl azide polymer (B-GAP) is used in propellant composition as a binder. The thermal properties of B-GAP are therefore of interest. This paper mainly deals with a study of the thermal decomposition of B-GAP using thermal analysis, including DSC, TGA and ARC. The variable heating rate and isothermal techniques were used for obtaining kinetic results for B-GAP. (C) Minister of Natural Resources Canada, 1998.