Architectural · A-C2S4R

Roof Curb Flashing and Self-Adhering Tape Detail

Materials

Elements

Roofs Decks Waterproofing / Flashing Reinforcing

About this detail

The assembly is supported by a structural roof deck carrying five-eighths-inch Type X gypsum sheathing and a vapor retarder across the underside. A primer for polyurethane resins, specifically Sikalastic EP primer, coats the deck and curb surfaces to receive the waterproofing layers. A base reinforced flashing and Sikalastic LAM flashing with reinforcement extend up the vertical face, secured with mechanical fasteners. A three-quarter-inch by three-quarter-inch sealant cove is installed at the internal corner, accompanied by a three-inch self-adhering joint tape at the transition.

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