For those who live in the northern climates and who have to deal with excessive snow fall and ice dams.  For the most part, most home are built to withstand the snow element.  However, for older homes or homes that experience heavy snowfall it is important to be aware of the steps you can take to prevent damage.

Gutters can get damaged from excessive snow and ice.  One major clue is the long icicles that dangle dangerously from them.  This is also a major clue that and ice dam is forming.  Ice and snow in the gutters can cause severe damage and even injury if the gutter should fall from the weight.  The easiest way to prevent this from happening is to ensure that your gutters are cleared out before the snow falls.  However once it has already happened, having the snow removed from you roof will prevent any further damage or injury.

It is very dangerous to try and remove the snow yourself with no experience.  In addition it is highly likely that you will do more damage, and the ice will be under the shingles, and you run the risk of ripping them up in the process.  It is always best to call in the professionals for this job.

Source:  http://www.ehow.com/way_5860274_rooftop-snow-removal.html