Starter Shingle Roll eliminates the need for cutting shingle tabs or inverting them to create a starter row, saving installation time. Application is a snap too. Simply apply a single course of Starter Shingle Roll along a clean, dry and smooth eave line or rake edge, after removing the release sheet. Apply the Starter Shingle Roll directly onto the WeatherLock? underlayment or a layer of felt. Once it is pressed into place, you抮e ready to begin shingling. (See installation instructions for details.)