Using a Chiminea Indoors Chimineas can add warmth and ambiance to your backyard. It can also be used for cooking and is more secure than an open fire pit. Clay Chimineas require a layer sand in the base to protect them from thermal cracks caused by sudden fluctuations in temperature. https://stoves-uk10864.angelinsblog.com/29371864/10-healthy-habits-to-use-big-chiminea