Architectural · A-PRASZ

TPO Reinforced Membrane Roof Curb Flashing Detail

Materials

Steel Metal (misc.)Membrane / Roofing

Elements

Roofs Decks Waterproofing / Flashing Site / Paving Connections / Plates Reinforcing

Connections

Welded Connection Deck Attachment

About this detail

A TPO reinforced membrane roof curb flashing assembly is applied over a manufacturer-approved substrate and roof deck. A continuous sheet of TPO membrane wraps around the curb, secured at the top by a fastener at 12 inches on center beneath a metal cap flashing. Fastening plates secure the membrane base at a maximum of 12 inches on center, joined with a minimum 1 1/2-inch hot air weld. Cut edges of the TPO membrane receive an approximately 1/8-inch bead of cut-edge sealant. Bonding adhesive is applied where required, with specific exceptions noted for flashing heights under 12 or 18 inches when using termination bars.

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