Unitized curtain wall system for passive house standard

A unitized curtain wall system comprising:

• pre-assembled, pre-glazed aluminum framed curtain wall units having sides, a top, and a bottom, the curtain wall units framing glass units and being adapted to bear gravity loads and lateral loads and provide thermal separation between a building interior and a building exterior,
• the curtain wall units comprising vertical mullion components on the sides of the curtain wall units, and top and bottom horizontal rail components on the tops and bottoms of the curtain wall units, respectively, the vertical mullion components and the top and bottom horizontal rail components fastened together, the system comprising interconnected adjacent curtain wall units;
• the vertical mullion components of the curtain wall units secured to and suspended from one or more upper anchors installed on an upper floor slab;
• the bottom horizontal rail components engaged with top horizontal rail components of adjacent, lower curtain wall units;
• foam insulation disposed in one or more cavities between adjacent vertical mullion components and horizontal rail components, the foam insulation being compressible to permit flexing vertical movement of the curtain wall units and being shaped to reduce convective air movement in the one or more cavities;
• glazing gaskets disposed at one or more of the sides, the top, and the bottom of the curtain wall units to provide air and water tightness;
• and
• rain screen gaskets disposed at one or more of the sides, the top, and the bottom of the curtain wall units to provide pressure moderation, controlled environment between exteriors and rain-screen cavities, controlled water penetration, and controlled drainage.