Metal Sales Vertical Seam Manual - Manual (Page 12)

Underwriters Laboratories Inc. ®
UL
®
LISTED
PVS-12
VERTICAL SEAM
© Metal Sales Manufacturing Corporation/ Subject to change without notice/ Effective Date 9/11
800.406.7387 (Corporate Office) • www.metalsales.us.com
1. Metal Roof Deck Panels* No. 24 MSG min coated steel. Max panel width 18 in., rib height 1-3/4 in. Panels
continuous over two or more spans. Endlap for panels to be overlapped 6 in. A bead of sealant may be used at panel
ends and side joints.
METAL SALES MANUFACTURING CORPORATION - “Vertical Seam”
2. Roof Deck Fasteners* - (Panel Clips) One piece assembly, 3-1/2 in. wide by 1-7/8 in high. Clip spacing to be 48
in. OC.
METAL SALES MANUFACTURING CORPORATION - “Vertical Seam Clip”
3. Fasteners - (Screws) Screws used to attach the panel clips to Substructure (Item 4) to be No. 10 by 1 in long
Pancake head wood screws with a No. 2 Phillips head or 10x1 in., 1/4 in. Hex Head Woodgrip. Two screws per clip.
Screws used to attach Substructure (Item 4) to wood trusses or joists (Item 6) to be No. 8 by 2 in. Bugle head
screws. As an optional fastener, 2-1/2 in. long 8d common deformed shank nails may be used. Fasteners used at
endlaps to be 14x1 in. Type AB or 10x1 in. woodgrip.
When light gauge structural steel joists are used, screws to be No. 12 by 1-5/8 in. long with a Phillips head.
Spacing of screws to be 6 in. OC at plywood or OSB ends and 12 in. OC at interior joists.
4. Substructure (Plywood or OSB) Plywood decking or oriented strand board (OSB) to be a nom 5/8 in. thick, expo-
sure sheathing span C-D, 40/20 plywood. (All butt joints to be sealed against leakage by using tape and/or caulking).
In lieu of plywood, 1 in. tongue and groove decking may be used.
5. Moisture Barrier - (Optional) Any suitable membrane to protect Substructure (Item 4).
6. Joists Joists, spaced at 2 ft, 0 in. OC max (when tongue and groove decking is used, joist spacing may be 30 in.
OC max), may be one of the following:
A. Nom 2 by 6 in. wood joists, No. 2 or better.
B. Nom 2 by 4 in wood when used on a top chord of a wood truss, No. 2 or better.
C. Light gauge structural steel framing with the member against the plywood to be a min No. 22 MSG coated steel.
Refer to General Information, Roof Deck Constructions, for Items Not Evaluated.
*Bearing the UL Classification Mark
Construction No. 436
February 27, 2001
Uplift - Class 90
Fire Not Investigated
Ul 580 w
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VERTICAL SEAM
4 3
5
2
1
6
24" Maximum