How much hearth do I need?
A minimum of 225mm from the front of the stove is required, if your stove is not designed to be run open. 300mm is minimum in front of an open fire or stove designed to be burning with the doors open. Either side 150mm is needed. If the doors on the stove come out further than this some installers would consider it good practice to increase the measurements to the depth of the door.