The limitations of photopolymerization techniques for epoxy-based composites, such as the low penetration of light rays or the inefficiency of the process in the presence of opaque additives, have led to the need to develop new polymerization techniques. Radical induced cationic frontal polymerization (RICFP)1 combines photopolymerization with thermal radical polymerization, achieving to overcome the aforementioned limitations. Frontal polymerization is a unique type of polymerization where the polymerization process moves from a localized initiation point and propagates in a front, typically in the form of a moving reaction zone. This can be contrasted with typical bulk polymerizations, where the process occurs throughout the material uniformly. In this work, different formulations have been developed to evaluate the viability of performing RICFP at room temperature of an epoxy resin and its composites. The formulations studied are based on a bisphenol A diglycidyl ether diglycidyl ether (BADGE) epoxy resin, in which the concentration of a diluent based on a cycloaliphatic epoxy resin, named CE, has been varied. The rheological properties of the formulations studied were determined to establish the relationship between the viscosity of the system and the viability of carrying out RICFP. Subsequently, the gel content, the glass transition temperature, the crosslinking density and the mechanical properties of the most promising formulations have been determined. Finally, composite formulations with different fibres have been evaluated.