What is the name of the flashing used where a roof area intersects a vertical side wall, with individual pieces of metal flashing installed at the end of each shingle course?

What is the name of the flashing used where a roof area intersects a vertical side wall, with individual pieces of metal flashing installed at the end of each shingle course?

• A. Counter flashing
• B. Step flashing
• C. Head flashing
• D. Rake flashing

Answer: (B)

Step flashing is used where a roof meets a vertical sidewall. Each metal flashing piece is installed at the end of each shingle course, creating a stair-step that rises up the wall as you lay more shingles. This layout ensures water is directed down the roof surface and over the joint, preventing water from getting behind the siding or wall. The flashing pieces are positioned with one leg under the shingle above and the other leg against the wall, so the sequence of pieces forms a continuous, weatherproof path up the wall. This approach is specific to roof-wall intersections, while other flashings serve different locations: counter flashing covers the joint with base flashing around features like chimneys; head flashing runs along the top edge of a wall or around openings; rake flashing lines the edge of a sloped roof at the gable.

Step flashing is used where a roof meets a vertical sidewall. Each metal flashing piece is installed at the end of each shingle course, creating a stair-step that rises up the wall as you lay more shingles. This layout ensures water is directed down the roof surface and over the joint, preventing water from getting behind the siding or wall. The flashing pieces are positioned with one leg under the shingle above and the other leg against the wall, so the sequence of pieces forms a continuous, weatherproof path up the wall. This approach is specific to roof-wall intersections, while other flashings serve different locations: counter flashing covers the joint with base flashing around features like chimneys; head flashing runs along the top edge of a wall or around openings; rake flashing lines the edge of a sloped roof at the gable.