Cracks in the enamel

Before you start to cook always check that any oven trays not being used have been removed from the bottom of the oven. Place cookware on the wire shelves, never on the bottom of the oven as excessive heat will build up between the tray and the oven floor if trays come into direct contact with the oven floor. This may lead to the enamel peeling and cracking

Please don't line the oven with silver foil, this will focus heat and create hot spots which may cause the enamel lining of the oven cavity to crack or blister