It's a scenario that everyone is likely to experience at least once: after heavy rain, you notice that water has mysteriously started dripping from the ceiling. Unless your plumbing has coincidentally failed during the storm, the culprit could only be a leak in your roof. For many people, the idea of climbing onto the roof to find and patch a leak falls squarely in the "professionals only" category of home maintenance. However, if you are one of the diehard DIYers who insists on tackling any project head-on, this simple guide can help you fix your roof safely and effectively.