El Cid, Flamingo Park, and Northwood still show genuine brick and block chimneys from the decades when a fireplace was the heat source. Soft mortar, a clay-tile flue, and a short stack above a low roof behave differently from a tall chase on a later western house. Masonry repair on those older streets is about the joint that actually opened, not a coat that hides the next crack.
Homes along Flagler Drive and closer to the Lake Worth Lagoon take wind off the water that inland roofs do not feel the same way. A cap that sits well in a vertical shower can lift at a corner when rain arrives sideways. That is why a stain after one afternoon cell is not automatically the same job as water after a named tropical system. Stay on the ground and note what moved, what rusted, and when the stain first showed.
Farther west, many houses never had a masonry stack. The fireplace is a listed unit inside a chase. The weather lid, the cap, and the siding transitions are the envelope. Ask for the chase to be named in the visit notes if that is what you have. A downtown brick conversation does not transfer to that roof.