What is step flashing vs. counter flashing on a Minnesota roof, and how can you spot a bad install from the ground?
Step flashing and counter flashing provide a two-part defense against leaks where a roof meets a wall or chimney. Step flashing consists of a series of small metal “steps” woven with each shingle course, while counter flashing serves as the top cover that blocks water from getting behind the base metal. From the ground, you…
