Architectural · A-ECRBT

Roof Crown and Curtain Wall Overhang Section

Materials

Steel Aluminum Metal (misc.)

Elements

Walls Curtain Walls Roofs Parapets Waterproofing / Flashing Insulation Millwork / Casework Connections / Plates

Connections

HSS Connection

About this detail

This roof crown and curtain wall overhang assembly details the transition between a standing seam metal roof and a vertical curtain wall system. The standing seam metal roof sits over a substrate, vapor retarder on cover board, and rigid insulation, supported by metal framing with thermal break shims. At the edge, a painted aluminum coping caps the parapet, backed by a structural steel bent plate and continuous flashing support provided by the curtain wall manufacturer. Below the roof overhang, an aluminum plate outrigger and painted metal flashing connect to an exterior steel bracket and hollow structural section (HSS) support. Water-resistive barriers and vapor retarders maintain the building envelope continuity across the junction.

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