Using a Chiminea Indoors Chimineas can add warmth and ambiance to your backyard. It can also be used for cooking and is safer than the fire pit. Chimineas made of clay require an sand layer at the base to avoid cracks in the thermal structure due to sudden temperature changes. https://stoves-uk02234.bcbloggers.com/29381079/17-signs-to-know-if-you-work-with-chiminea-fire-pit