Rockwarblers live in monogamous pairs in a permanent home-range. The nest site is usually in a sandstone (occasionally limestone or granite) cave, in total or near-darkness and is re-used each year. It will also nest in darkened buildings, under rafters, on verandahs or in house eaves. The nest is a suspended dome-shaped structure made from roots, moss, grass and bark bound together with spider webs, and has a round side entrance that is sometimes hooded. The inner nest chamber is lined with soft materials, including feathers, fur, grasses and plant down. Both parents feed the young, which stay with their parents for some time after fledging. Sometimes parasitised by Fan-tailed Cuckoo.