SC Glass And Glazing Practice Questions - South Carolina Glass And Glazing Contractor Examination Exam

What is the idea behind a pressure-equalized rainscreen curtain-wall cavity?

Seal the outdoor face so perfectly that no air or water can ever enter Let the mullion cavity reach outdoor pressure so rain is not driven through the outer joints, then drain and dry the cavity to the exterior Pressurize the occupied room above outdoor pressure using the HVAC system only Omit weeps so the cavity stays full of water as a thermal mass

Correct Answer:

Let the mullion cavity reach outdoor pressure so rain is not driven through the outer joints, then drain and dry the cavity to the exterior

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