A wood burning stove and multi fuel stove must stand on a non combustable hearth,extending a minimum of 225mm in front and 150mm out from the side of the stove,if the hearth is on a combustable floor it must be at least 250mm thick,some stove manufacturers have models that have been designed and tested to have a hearth temperature not exceeding 100 degrees centigrade,in this case a 12mm hearth can be used,
Please note that if you are using an appliance that is designed to run with the doors open,then you must have at least 300mm in front of the stove.
We previously mentioned that the hearth must be at least 250mm thick,( unless the stove is approved for 12mm hearth )if you are installing the hearth on to a non combustable floor e.g concrete floor,then the overall thickness can be 250mm,for example if the non combustable floor is made up of 100mm of concrete,then you have hearth of 150mm to make up the 250mm required
HEARTHS FOR FREE STANDING STOVES
If you are planning to install a stove into a room with no chimney,then you must ensure that the hearth is a minimum of 840mm x 840mm,while this is a minimum if you have a large stove,then you must still follow the rules we stated at the start of the page e.g 225mm in front and 150mm each side of stove
When laying a hearth etc never install a hearth as one piece ! always create a hearth out of at least 2 sections,due to the heat produced by the stove,if you create a hearth out of a single piece it is possible that it can crack as there is no movement available