3. Installation - fireproofing the wall. You can install a stove right up close to a brick wall, though it is always wise to leave a gap of 50mm - 75mm to allow the warm air at the back of the stove to circulate into the room. XXIf the wall contains timber or other flammable materials it will need to be fire-proofed. The illustration at right shows a typical arrangement. All flammable material is stripped out and a course of bricks or concrete blocks is laid up. The bricks must have a minimum thickness of 100mm and should extend a minimum of 300mm above the appliance. Thermalite block is particularly well suited to this job since it is light, has a high insulation value and is soft enough to be cut and shaped with a hand saw. The finished wall can be faced with any suitable material such as quarry-tiles. In the case of a suspended timber floor, the wall would be incorporated into the structural hearth built up from below so that its weight would be fully supported from below.