What is the purpose of a starter strip in roofing?

The purpose of a starter strip in roofing is crucial for the overall performance and longevity of the roof system. It serves to create a solid and wind-resistant foundation for the first course of shingles. By filling in spaces under the first course, the starter strip ensures that there are no gaps that might allow water infiltration. It also helps to redirect water away from the underlying layers and prevents it from seeping into the roof structure.

Additionally, the presence of a starter strip can help with adherence by providing a better grip for the first row of shingles, which can be beneficial in areas subject to strong winds. As such, having a properly installed starter strip is essential for maintaining the integrity of the roof and ensuring it performs as intended under various weather conditions.