Ask This Old House

Rusty Bulkhead, Granite Stairs (23x4)

:

Concrete, brick, and mortar are incredibly durable, but they’re no match for water. While on a house call, mason Mark McCullough realized the root of a homeowner's problems with their front steps was exactly that: water getting behind the stair tread, deteriorating the mortar and heaving the tread forward when it freezes. Luckily, Mark knew just what to do.