In a hot, humid climate, where should the air/vapor barrier be located in wall assembly?

In a hot, humid climate, placing the air/vapor barrier on the outer part of the wall assembly is crucial for effective moisture management. This positioning helps to prevent warm, humid air from coming into contact with cooler surfaces inside the wall, which could lead to condensation. By placing the barrier on the exterior side, it effectively stops moisture from the outside environment from penetrating into the wall assembly and reaching the interior space, where it might lead to issues like mold growth or structural damage.

This approach aligns with the principles of keeping moisture out of the living spaces, accounting for the specific challenges posed by a hot and humid climate. It ensures that the barrier can function as a protective layer, allowing for the management of humidity and promoting overall structure durability. Proper placement of the barrier in this context is essential for maintaining indoor air quality and long-term building integrity.