The glass in my fireplace is full of soot – what could be wrong?

Soot will appear on the glass if the combustion temperature is too low or if the lighting period is too short. When lighting the stove a lot of air must be supplied to warm up the chimney. Open the riddling grate and the air controls. If necessary, open the door a bit to supply as much air as possible. When the kindling has turned to embers, dry wood is supplied. Plenty of air must still be supplied. The combustion is now controlled by the primary or secondary air controls. Moreover, the combustion temperature is increased by supplying more secondary air. Besides wet wood, poor draught conditions may cause sooty glass.