This roof edge assembly features a cross-laminated timber roof slab terminating at a parapet wall with a pressure-treated wood cant strip. Two-ply styrene-butadiene-styrene modified bituminous roofing membrane extends up and is clamped into the scupper opening. A seventy-five millimeter clamp-type overflow scupper drain penetrates the parapet at a five percent minimum slope. Self-adhering membrane is returned over the scupper penetration with a minimum seventy-five millimeter overlap.
T/O CLT ROOF SLAB VARIES T/O PARAPET VARIES 150 100 MIN. R1 SLOPE 5% MIN. SLOPE 5% MIN. RETURN SAM #1 OVER SCUPPER 75mm MIN. 75mm CLAMP-TITE OVERFLOW SCUPPER DRAIN 2-PLY SBS ROOFING CLAMPED INTO SCUPPER
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