Roof flashings serve several purposes. It adds a finished look to your roof while helping to prevent wind and insect damage. However, flashing’s primary purpose is to ensure that your roof remains watertight. This is one roofing element that is sometimes ignored or poorly installed, but aside from the roofing material itself, flashings are the most important roofing components. Once you understand how flashing works, you’ll see why it is crucial to a long-lasting, watertight roof.