The design team had set unrealistically high building envelope air barrier goals for an oceanfront tropical resort. This was done in an effort to avoid the extensive mold damage suffered by another tropical resort nearby due to wind-driven infiltration. During design phase commissioning peer review, Liberty recommended installation of a fluid-applied air barrier system. The design team decided to use a sheet-applied building wrap instead. Liberty recommended air tightness testing to confirm the efficacy of the building wrap with respect to the design team’s goals. Our air barrier testing found the building to be leakier than predicted and specified. Although these results alarmed the client, Liberty suggested the goals originally set were unrealistic for the specified air barrier assembly, and that a lower number would be acceptable with the proper as-designed HVAC system in place. We also recommended that the design team and general contractor provide better directions to workers on air barrier assembly installation.