A. Covered Causes Of Loss When Basic is shown in the Declarations, Covered Causes of Loss means the following: 1. Fire. 2. Lightning. 3. Explosion, including the explosion of gases or fuel within the furnace of any fired vessel or within the flues or passages through which the gases of combustion pass. This cause of loss does not include loss or damage by: a. Rupture, bursting or operation of pressure relief devices; or b. Rupture or bursting due to expansion or swelling of the contents of any building or structure, caused by or resulting from water. 4. Windstorm or Hail, but not including: a. Frost or cold weather; b. Ice (other than hail), snow or sleet, whether driven by wind or not; or c. Loss or damage to the interior of any building or structure, or the property inside the building or structure, caused by rain, snow, sand or dust, whether driven by wind or not, unless the building or structure first sustains wind or hail damage to its roof or walls through which the rain, snow, ...