To meet the newer and more demanding regulations for solid fuel stove installation the fire backboard is of 25mm thick "Super Isol". This material is so fire resistant and has such low thermal conductivity that it can be touched comfortably on one side whilst a gas flame is played on the other. Behind it there is a 1.1/2" (37mm) airgap to the nearest "combustible material" which is fire retardent insulating foam.
The Super Isol which is quite soft will be ceramic tiled. It has been treated with PVA to aid tile adhesion.
It is protected at the edges (outside the hot zone) by wooden profile pieces