Oklahoma Roofing Endorsement Practice Exam

The installation of soldered one-piece step flashing at the end of each shingle course on a steep-slope asphalt shingle roof is crucial for effective water management. This type of flashing is designed to direct water away from the roof and into the gutters, preventing water intrusion at intersections such as walls and chimneys where shingles meet other structures.

Soldered one-piece step flashing creates a continuous barrier that effectively channels water down the roof and away from potential leak points, ensuring that water flows in the intended direction, thus protecting the underlying materials of the roof and the structure beneath it.

Other options may serve different purposes but do not fulfill the specific role of providing a direct water diversion path like step flashing does. For instance, gutters are important for collecting water runoff but are not installed at the end of shingle courses. Ridge caps cover the peak of the roof to prevent leaks at the highest point, while tar paper is used as an underlayment to provide a secondary water barrier beneath shingles but does not actively redirect water at the surface level.