Drainage to deflect water away from the foundation wall is important to the long-term performance of this wall assembly with respect to water penetration.

Detailing of the wall to ensure continuity of the water-resistive barrier, air barrier, vapour barrier, and insulation at the below-grade to abovegrade wall transition is important to the overall performance.

The exterior of foundation walls can be difficult and expensive to access post-construction. It is prudent to design these assemblies conservatively with respect to water penetration and to use durable materials.