| INSTALLATION GUIDE - For Dura Rib Metal Roofing Panels
Roof application
Begin installation at the gable end of the roof, opposite the prevailing wind. Measure the total width of the panel from the roof edge. At this point chalk a line from ridge to eave. Place the leading edge of the first panel along this line. It is essential that this panel be laid square to the eave and ridge so that the remaining panels will line up square on the roof frame. It is advisable to have a person at the eave and at the ridge to ensure that the proper panel coverage is being maintained across the roof. It is important that the panels be properly sidelapped.
In applications where endlapping is necessary the panel higher on the slope must lap over the panel that is lower on the slope. The roof pitch will determine what the proper endlap for the panels should be. All endlap applications require two horizontal (across the panel) rows of butyl sealant tape and proper fastening to provide an optimum water seal.
To provide a drip edge, an overhang of 2 -3 inches is recommended. Where gutters are used a 1/2" 1" overhand is necessary. At the eave, inside closures should be used on top of a row of butyl sealant tape. Another row of sealant tape is then placed on top of the closure before the panel is installed over it. This provides a tight seal and will assure optimum weather tightness.
At the gable(rake) edge the appropriate gable/rake flashing should be set on butyl sealant tape and fastened every 6" to 12" on center, up the slope of the roof.*
On the ridge, the outside closure strip should be set on butyl sealant tape and another row of sealant tape should be used over the top of the closure. The ridge flashing is the placed on top of the closures and sealant and fastened through the panel into the structure every 6" to 12" inches depending
on the application.*
* Flashing fastening may vary due to region and use. It is best to consult a registered architect or engineer as to the fastener spacing for your particular application. A maximum of 12" spacing is recommended to be maintained.
Roof Slope
Diversified Industries roofing panels must maintain a certain degree of pitch to ensure proper water drainage. The minimum roof slope for all panels shall be 3 inches rise per foot. Consult the manufacturer before using metal roofing below a 3-12 pitch. If the slope of the roof is below a 3-12 pitch, a butyl sealant must be applied at all sidelaps to help prevent water from siphoning over the ribs.
INSTALLATION GUIDE - For 5V-Crimp Metal Roofing Panels
Step 1. Make sure the deck is level and square. Batten strips are optional in new construction and reroofing over shingles. Roof decking integrity should be checked to insure adequate pull out in any reroofing application. Shingles can not be batten over if more than two layers of shingles are present. Apply batten strips according to fig. A. Battens are to be 1 x 3 yellow pipe according to ASCE 793 Standard. Diversified Industries recommends #30 felt to be applied as a condensation barrier. Attachment of felt shall be in compliance with building codes for area. An additional layer of #15 felt must be used as separation sheet if attachment of felt paper is to be done with tin tab.
Step 2. Install Eave Drips and Valley according to details. Trim should be fastened 12" on center or 8" on center depending on the zone location. Remember to use inside closure strips between Eave and Panel to eliminate water infiltration.
Step 3. Panel placement should be on the gable and opposite of the prevailing wind. Starter edge of the panel will be the lap edge. (Opposite of anti-siphon edge). After laying first panel check for squareness. Panel 2 should be lapped over anti-siphon groove of Panel 1. (see fig. B). A minimum of 1" overhang is required at eave. Alternative method of panel placement may begin in the center of the roof. This method involves centering the center point of the panel and working out to the gable or exterior edges. Often this method is used when the area covered is not divisible by 2" or traditional placement allows for a pipe flashing to occur in a side lap. Endlaps must be a minimum of 12" and two strips Butyl Sealant is recommended 8" on uphill side of lap to keep watertight.
Step 4. Fasten panel according to fig. C or D depending on the area of application. Note that ASCE-798 requires additional screws in the flat area of the pan at all Ridge, Eaves and Endlap areas. Diversified Industries recommends a 9# x 1 1/2 Wood Fastener. Field attachment should be 16" on center. Trim Fastening should be increased to 6" on center in high wind areas.
Step 5. Any field cutting must be done with metal nibblers, metal snips, or blades designed for metal cutting. No cutting should be done on roof, as it will cause iron shavings to be spread and adhere to roof panels. Proper cutting should be done exposed panel side down and field swept to remove iron debris.
Step 6. Install remaining accessories such as pipe boots, ridge caps, and gable flashing. Butyl sealant and caulking are necessary to maintain watertight seals. Also inspect screw fasteners to insure that they are installed properly (See fig. E)
Step 7. Field clean the roof surface with a broom to be sure any iron shavings are removed.
PITCH STRUCTURAL ALERT! 5V REQUIRES 3 /12 PITCH TO MAINTAIN WATER DRAINAGE. THIS PANEL MUST BE INSTALLED OVER SOLID DECKING AS IT IS NON STRUCTURAL. APPROVED DECK SUBSTRATES INCLUDE 5/8" PLYWOOD OR OSB BOARD. FIRE BARRIERS SUCH AS DENSDECK AND ROCKTEC MAY ALSO BE FOR CERTAIN PROJECTS.
ATTENTION INSTALLER!! WHEN USING FASTENERS TO PENETRATE STEEL SHEETS THE IRON PARTICLES TEND TO GO AIRBORNE AND SETTLE ON THE SHEET. IT IS NECESSARY TO REMOVE THESE PARTICLES TO PREVENT EMBEDMENT AND RUST MARKS. |