Large Clay Chimineas For Sale Chimineas made of clay need to be protected from the weather. If left exposed to cold and rain a chiminea made of clay can become softer or crack. Chimineas that will be frequently used should be filled 50mm with sand or Gardeco Lava Stones (see https://fireplacesandstove31975.blue-blogs.com/36573964/the-top-reasons-people-succeed-in-the-biggest-chiminea-industry