A light curing structure and related methods are disclosed wherein a framework defining an interior space for containing an object having applied thereon a light-cured material is provided, and means associated with the framework for exposing the object to UV radiation from natural sunlight is used to cure the light-cured material. Preferred embodiments include a booth for applying and curing light-cured materials comprising a housing having a ceiling and walls that define an enclosed interior space for holding an object, means for applying a light-cured material to the object; means for preventing the exposure of the light-cured material to UV radiation during application of the light-cured material to the object, and means for exposing the light-cured material to UV radiation from natural sunlight after application of the light-cured material to the object. Apparatus and methods according to the invention are particularly suited for use with UV-cured paints in the automotive industry.