Around one billion people across the globe live in shack settlements. Many of these settlements are at constant risk of lethal fires, due to the use of flammable construction materials and contents, open flame lighting, heating and cooking methods, the close proximity of the shacks, and the lack of effective fire services, amongst other factors. Our project focuses on this problem in South Africa (specifically the Cape Town area) where shack fires are an everyday occurrence leading to death and injuries, displacement, and damage to property, possessions, businesses, and communities. Improving fire safety is extremely difficult in a context where building regulations are largely irrelevant, where residents typically lack available or affordable electricity - forcing them to use candles, stoves or open fires for lighting, heating and cooking - and where socio-legal arrangements discourage the use of more permanent and less flammable construction materials, such as brick. Potential solutions to the problem of informal settlement fires (both in South Africa and elsewhere internationally) must not only be technically sound, but also need to take account of these broader social factors that shape the ways that residents build, maintain, and interact with their built environment. Our research is unique in its inter-disciplinary scope in that we seek to develop a systematic understanding of both the socio-political and technical factors involved in making informal settlements vulnerable to fire. By compiling existing data, undertaking multi-site surveys, carrying out comparative analysis, and conducting modelling experiments this project will develop grounded, effective solutions. Our research will assess the effectiveness and practical feasibility of 'technical fixes' like fire retardant paint, smoke alarms, and heat detectors, as well as developing guidelines that communities can use to re-structure their shack settlements to provide effective fire breaks. Being informed by technical best practice and the socio-political realities of life in shack settlements, our findings will enable residents to take action on fire safety and outline where the myriad of actors interested in such issues can most usefully contribute their time, insight, and resources.