MSC - Erection Manual

MSC M echanically S eamed C onstruction

®

ERECTION SEQUENCE

STEP 16

TRI-BEAD TAPE MASTIC

1/4"-14 X 7/8" WT

ROOF CAP

RIDGE-FLASHING Install the ridge flashing starting and ending 4” outside the steel line. Fasten the ridge flashing to the outside closures with 1/4"-14 x 7/8" WT fasteners. Temporarily leave 4' unfastened on each end to allow for the rake trim to be installed later. Fasteners spacing for 18" and 24" panel shown. 24" Wide Panel: Install a fastener 1 1/2” either side of panel seam and 5 1/4" center to center between seams. Five fasteners are required at each panel. 18" Wide Panel: Install a fastener 1 1/2” either side of panel seam and 5" center to center between seams. Four fasteners are required at each panel.

* * Roof Cap to be flush with the outside face of the gable trim. Refer to Section and Detail pages in the Erection Drawings.

ROOF CAP

1 ½"

1 ½"

1 ½"

1 ½"

5 ¼"

24" Panels = 4 SPACES AT 5 ¼" 18" Panels = 3 SPACES AT 5"

DO NOT FASTEN THROUGH THE LOCK OF THE STANDING SEAM.

Apply a bead of Sikalastomer-511, as shown, and install (14)1/4"-14 x 7/8" WT fasteners at roof cap laps. Use a 2" lap dimension.

1/4"-14 X 7/8" WT

OUTSIDE CLOSURE

1/4"-14 X 7/8" WT

1"

TRI-BEAD TAPE MASTIC

ROOF CAP

Refer to erection drawing General Details for expansion joint installation instructions if required.

1"

1 1/2"

SIKA 511

2"

MSC-40

Version 7.2

SUBJECT TO CHANGE WITHOUT NOTICE