Your windows are among the most vulnerable entry points in your home. After all, whether you're talking about vandals or high winds, glass is easier to break than solid wall.
Most people experience combustion on a daily basis, especially in the winter. Combustion, which is a process that combines fuel with oxygen to produce heat and light, is the way natural gas- and oil-fired furnaces heat your home. It’s the way most water heaters work, as well.
However, spontaneous combustion is when combustion occurs without an apparent ignition source. Seeming to have sprung up spontaneously, fires resulting from spontaneous combustion are often the result of long-term chemical reactions. For instance, phosphorus self-ignites at room temperature without any heat applied.