Which term describes the vertical spacing between the exposed edges of consecutive shingles in the same course?

Which term describes the vertical spacing between the exposed edges of consecutive shingles in the same course?

• A. Exposure
• B. Sidelap
• C. Toplap
• D. Headlap

Answer: (A)

Exposure describes the vertical portion of each shingle that remains visible after installation. When shingles are laid in a course, the top edge of the next shingle covers part of the one below, leaving a visible strip on each shingle. This visible strip, measured vertically from one shingle’s exposed edge to the next shingle’s exposed edge in the same course, is the exposure. It determines how much of the shingle you see, influences wind resistance and water shedding, and varies by shingle type and climate. Sidelap refers to horizontal overlap between shingles in the same course, while toplap and headlap describe overlaps between courses (how much a shingle overlaps the one above or below).

Exposure describes the vertical portion of each shingle that remains visible after installation. When shingles are laid in a course, the top edge of the next shingle covers part of the one below, leaving a visible strip on each shingle. This visible strip, measured vertically from one shingle’s exposed edge to the next shingle’s exposed edge in the same course, is the exposure. It determines how much of the shingle you see, influences wind resistance and water shedding, and varies by shingle type and climate. Sidelap refers to horizontal overlap between shingles in the same course, while toplap and headlap describe overlaps between courses (how much a shingle overlaps the one above or below).