During the 12 years I've been
repairing chimneys, I've
found that most chimney
problems can be traced to a
handful of causes. In this article, I'll
identify the problems I most often
encounter, and explain the techniques I
use to repair them.
Typically, the exterior of a chimney
will deteriorate first. A few minutes
spent inspecting a chimney will often
reveal telltale signs of problems.
I start at the top, and check to see that
the crown is sound and free of cracks.
Next, I examine the joints, looking for
any missing mortar, hairline cracks, or
soft, eroded mortar. I also check the
integrity of the mortar bonding by tapping
the bricks or blocks with a hammer.