Using a Chiminea Indoors Chiminesas can add heat and ambiance to a backyard space. It can also be used for cooking and is more secure than an open fire pit. Clay chimineas require a layer of sand in the base to prevent thermal cracking due to sudden changes in temperature. https://fireplacescanada10864.mybuzzblog.com/9444560/big-chiminea-101-your-ultimate-guide-for-beginners