A well-constructed roof can last anywhere from 15 to 40 years, depending on the materials used; but, alas, all good things eventually come to an end. Sooner or later, just repairing the damage done by the elements won't be enough. When it's time to lay your old roof to rest, you will more than likely need to hire a contractor to do the work for you. This is both good and bad news for homeowners. The increase in home construction in the last few years has led to a bumper crop of roofing…