The perimeter junction of a cross-laminated timber roof slab meets an insulated parapet wall assembly. A vapor barrier membrane and an upturned SBS base sheet sealed with compatible mastic apply to the CLT roof slab leading edge. Thirteen-millimeter exterior grade plywood, polystyrene insulation number five B, and a transition vapor barrier membrane comprise the exterior parapet. A sixteen-millimeter DensDeck Prime substitutes where framing spacing exceeds six hundred ten millimeters. A pre-finished metal flashing featuring a custom sheet metal break shape ties into the assembly over an insect screen, secured by a continuous bead of caulking.
GL T/O CLT ROOF SLAB 8.400 19 102 51 203 MIN. 50 75 19 12 R1 SL. 92 92 152 86 45 375 100 100 VB MEMBRANE UPTURN EXTENT OF UPTURNED SBS BASE SHEET (SEAL LEADING EDGE W/ COMPATIBLE MASTIC) TRANSITION VB MEMBRANE TRANSITION VB MEMBRANE EXTENT OF DEGRANULATED CAP SHEET STRIPPING & TRANSITION V.B. INSECT SCREEN PRE-FINISHED METAL FLASHING CONTINUOUS BEAD OF CAULKING SHEET METAL BREAK SHAPE BY ROOFING CONTRACTOR CAP SHEET STRIPPING BASE SHEET STRIPPING 13mm EXT. GRADE PLYWOOD POLYSTYRENE INSULATION #5B 102 102 150 EXTENT OF TRANSITION VB (SBS) MEMBRANE VB MEMBRANE 16 mm EXT. GRADE PLYWOOD (MAX. 610 mm). IF GREATER THAN 610 mm, CONTRACTOR TO USE 16 mm DENSDECK PRIME 89 VARIES 102
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