What term describes the spacing between butt joints of adjacent shingles?

The term that describes the spacing between butt joints of adjacent shingles is "stagger." This refers to the intentional offsetting of the ends of shingles in adjacent rows to ensure that the joints do not line up directly, which helps to enhance the roof's overall durability and water-shedding capability. Staggering prevents water from following a straight path through the joints and reduces the likelihood of leaks, thus contributing to the longevity and effectiveness of the roofing material.

In roofing practice, maintaining a staggered layout is important for both aesthetic appeal and functional performance. This method helps to distribute the load across the roof more evenly and mitigates potential problems associated with water infiltration. It is a standard technique used in various roofing systems to improve resilience against weather elements.