In various embodiments, this invention includes a wall assembly having an interior generally vertical wall having a wall face, an exterior generally vertical wall confronting and being spaced from the wall face, and a generally horizontal ledge extending perpendicularly to the interior and exterior walls. A cant member is installed above grade on the wall assembly and has a upper portion, a lower portion and a cant portion intermediate the wall and lower portions. The upper portion is juxtaposed in face-to-face relation to the wall face and the lower portion is juxtaposed in face-to-face relation to the ledge with the cant portion extending between the wall and lower portions such that a flashing is supported by the cant and moisture on the wall face of the interior wall is diverted by the cant member along the cant portion toward the exterior wall and away from the wall assembly. The invention also extends to a cant member as described in various embodiments herein as well as a method of constructing a wall assembly.