Flashing a Chimney
Installing the flashing along with the bricks makes for a more secure and much better-looking job.
Synopsis: A North Carolina builder shows how copper flashing can be integrated with a masonry chimney as it is built, an approach that yields a neat, weathertight seal.
In the early 1970s, my father and a friend went into the roofing business. The friend supplied the capital, and my father, who had six sons, supplied the labor. Being the most particular of the six boys, I was given the task of flashing chimneys. My work was good enough to justify my father’s confidence, but invariably, the finished product was a hodgepodge of incongruent shapes and oozing tar—nothing to be proud of.
In the intervening quarter-century, I’ve built as many chimneys as I’ve flashed. As I’ve grown from a schoolboy roofer to a seasoned builder and mason, experience has taught me that the best way, visually and structurally, to flash a chimney is to do so at the same…