When flashing starts to pull away from a chimney wall or roof-to-siding transition, the first visible signs usually show up indoors before the roofline looks dramatic from the street.
Start indoors: check ceilings near vent stacks, skylights, and chimney walls, then take clear phone photos before the stain dries or spreads.
If the leak only shows up during wind-driven rain, use the Seattle response page to see what crews need before a same-week inspection window.
Localized stains near a chimney wall, vent, or siding transition usually point to flashing trouble first, while broader sagging, repeated leaks across several rooms, or widespread shingle loss usually signal a larger replacement conversation.
Homeowners tend to search for current-season repair advice, so year-based framing often stays in place even after crews update the body copy and service links.