Install fasteners on center on both sides of valley through panel and closure 3 inches back from edge of cut metal.
Nailing pattern for galvalume metal roof.
In most cases 4 nails are adequate.
Position the nails appropriately according to the shingle installation instructions.
For this reason galvalume steel is used most commonly in rather simple metal roof styles such as standing seam because there isn t quite as much bending in the metal.
Align shingles properly to avoid nail exposure.
End lap w valley a minimum of 12 inches.
For duration series shingles owens corning recommends using either a 4 or 6 nail fastening pattern depending on the roof s slope and building code requirements.
Most of the time you ll need to contact a local building inspector directly to get a definite answer if it s not already written out for you on the blueprints or manufacturers specifications.
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Nail available for steel panels when screws are not desired.
Use 1 1 4 inch nails to cover the outline of the roof with strips of metal eave flashing also called edging.
Cut roof panels on angle as necessary.
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I like to give them a call about any new nailing schedules that i m uncertain about.
Temporarily secure valley in place with small nails or flat screws.
Use the lower edge of the roof as a guide and install nailers end to end across the roof with the lower edge two inches from the edge of the roof.
Because galvalume steel is more corrosion resistant than galvanized it is sometimes installed unpainted or with a low cost acrylic clear coat.
If there are gutters installed on the eaves the eave flashing should be installed to overhang the lip of the gutter by about 1 2 inch.
The correct way to fasten steel panels with nails is to drive the nail through the top of the rib so the washer is compressed securely against the metal.
This way i don t get chewed out by the building inspector when they show up to inspect that particular.
Place corner pieces where panels will meet bends at the edge of the roofing.
