Prevention measures to reduce deaths and injuries due to domestic fires have included the provision of self-closing fire doors within dwellings. Such an approach however, is reliant on a behavioural response on behalf of the occupier(s). This research examined occupier behaviour in relation to self-closing fire doors. Forty semi-structured interviews were conducted with individuals inhabiting a new home. In all of the properties with self-closing fire doors, the occupants reported interfering with the selfclosing mechanism of the doors. A quantitative survey was subsequently undertaken to obtain frequency data. In the majority of dwellings with fire doors occupiers reported propping these open in some way, or removing the self-closing mechanism from the door. The accounts suggest that, for fire doors to be an effective safety measure within dwellings, a greater emphasis needs to be placed on encouraging occupiers to adopt safe practices in relation to fire doors. Alternatively, other measures will need to be found to address the fire risk.