Final answer:
Exterior house wrap should be installed before framing and after the foundation is poured.
Step-by-step explanation:
Exterior house wrap should be installed before framing and after the foundation is poured. Before framing, house wrap should be applied to the exterior walls to provide a protective barrier against moisture, air infiltration, and potential water damage. This helps to keep the interior of the house dry and energy-efficient. After the foundation is poured, the house wrap is typically installed to cover the exposed foundation walls, providing an additional layer of protection against water penetration.