Caulking here prevents water from resting between the siding and the 2-by-12. The flashing will channel the water moving down the unobstructed grooves away from the top of the 2-by-12 down the wall.

eXact Color tintable caulk from Sashco Sealants is a high-performance caulk that Sashco says allows installers to customize the color to match a project’s specific needs. It’s reported to be ideal for ...