The roofline is Clinton Hill’s quiet spender
Displaced coping, open mortar joints and painted-over parapet brick all read as trivia from the sidewalk. They are how water gets into the top of a masonry wall — and once inside, it works downward through the house for years on the party-wall side where no one has a window to notice. Lou walks the roof where access allows and reports the wall tops like the structure they are.
Drainage is the other half. A row house sheds its whole roof through a leader or two, and a disconnected or short-changed leader is a foundation problem on a delay timer. It is the cheapest serious finding in the report — when someone looks.
Related: How Lou inspects a brownstone · What an inspection costs · Schedule an inspection.