Metal Sales Magna-Loc Installation - Manual (Page 29)

© Metal Sales Manufacturing Corporation / Subject to change without notice 6/12
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MAGNA-LOC
1. Metal Roof Deck Panels* No. 24 MSG min coated steel. Max panel width 18 in.; min 12 in. Rib height 2 in.
Panels continuous over three or more clips (Item 2). The panel flat area may have optional striated or minor
ribs placed at various locations in the panel flat area beginning min of 2 in. from side ribs. The upper flange
of the panel rib may be horizontal, or optionally formed down to produce an angle of 0 to 90° between the
vertical segment and the top flange of the rib. Panel end lap 2 in. min. An end lap back-up plate (Item 2A) to
be used at panel end lap. A bead of sealant may be used at panel end lap and side ribs. Ribs to be seamed
with an electric or hand seaming tool to form a flange with a tight hem. Seaming process to include the upper
portion of the panel clips (Item 2) .
METAL SALES MFG CORP - “Magna-Loc 16”, “Magna-Loc 18”
2. Roof Deck Fasteners - (Panel Clips) Located at side of panels (Item 1) over substructure (Item 3, 3A, 3B or
3C with max spacing of 36 in. OC), or plywood decking (Item 7 with max spacing of 36 in. OC). Either of the
following:
Fixed Clip (Not Shown) - One piece assembly fabricated from No. 22 MSG min thick steel, 3-1/2 in. wide.
Floating Clip Two piece assembly with a base fabricated from No. 16 MSG min thick steel, 2 in. wide and
a tab fabricated from No. 22 MSG min thick steel, 4-1/4 in. wide.
2A. End Lap Back-Up Plate (Not Shown) - No. 16 MSG min thick coated steel channel, 3 in. wide with two 3/8 in.
deep legs. Max length 74 in. Located under the panel (Item 1) end lap (50 ksi min yield strength).
2B. End Lap Back-Up-Plate (Optional) (Not Shown) - No. 16 MSG min thick coated steel. Width 11, 13 or 19 in.,
length 7 in. Two 3/4 in. by 3/4 in. tabs and a 1 in. deep vertical leg located at up-slope edge of panel (50 ksi
min yield strength).
2C. Roof Deck Fasteners*(Cinch Plate)-(Optional)-(Not Shown) width 1-5/16 in. length 18 in. max. Fabricated
from No. 20 MSG min thick stainless steel. Located over end lap.
3. Substructure - (Gypsum Board) (Optional) - Min thick 1/2 in. To be placed on top of either the plywood
decking (Item 7) or rigid insulation (Item 5). Combined thickness of the gypsum board and rigid insulation not
to exceed 4 in. All joints to be taped with 2.5 in. wide joint tape.
3A. Substructure - (Plywood) (Optional) - (Not Shown) - Plywood decking, used in lieu of gypsum board (Item
3), to be no 1/2 in. thick, exposure 1 sheathing, 40/20, CD. Located over rigid insulation (Item 5). Combined
thickness of the plywood and rigid insulation (Item 5) not to exceed 4 in.
3B. Substructure - (OSB) (Optional) - (Not Shown) - OSB decking, used in lieu of gypsum board (Item 3), to be
nom 1/2 in. thick. Located over rigid insulation (Item 5). Combined thickness of the OSB and rigid insulation
not to exceed 4 in.
3C. Substructure - (Bearing Plate) (Optional) - (Not Shown) - Bearing plate to be used in lieu of gypsum board
(Item 3) to be
4 by 4 in. by No. 18 MSG min thick coated steel (33 ksi min yield strength). Used under each clip (Item 2) over
rigid insulation (Item 5) only when rigid insulation is located directly under panel (Item 1).
4. Vapor Barrier (Optional) - Single ply, used between the substructure (Items 3, 3A or 3B) or plywood decking
(Item 7) and panels (Item 1). To be min 30 lb roofing felt.
Construction No. 506B
October 16, 2001
Uplift - Class 90
Fire Not Investigated
UL 580 WIND UPLIFT INFORMATION (CONT.)
MAGNA-LOC
36" Max
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