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Screwing panels will leave raw meta.l particles that can cause rust marks on panels and trim. Likewise, any particles left on the roof caused by the application of screws must be removed. Care should be taken to remove all loose particles from roof surfaces after application. To cut panels lengthwise: Note carefully where the panel is to be cut, and, using a straightedge, score deeply down the length of the panel with a sharp-pointed utility knife. Folding the panel along the score mark, and bending back again if necessary, should produce a clean break in the panel. Using sheet metal hand tools would be preferred, if you chosse not to purchase these specialized tools be sure that utility knife stays sharp. ORDERING ROOF PANELS AND SCREWS Care should be taken when ordering metal panels that correct length measurements are stated to avoid having to take corrective measures after purchase. Panel lengths should fa112 to 3 inches short of the ridge when a vented ridge is desired and should extend 2 to 3 inches past eave to allow a sufficient drip edge (except concerning gutters). The METAL SYSTEMS, INC. sales personnel are ready to assist customers with information specific to their particulax metal roofing needs. Specially-washered screws applied through the flat of the metal is the recommended method used to attach metal roofing panels. 1-inch screws can be used if penetration of only 3/4 inch is either necessary or desired; otherwise #lOxl-1/2 inch screws are recommended for metal to wood application. 2-1/2 inch screws are also available, and are often applied by installers who hold to through-the-rib fastening, and for ridge cap application. ORDERING AND APPLyING TRIM Common flashing for metal roofing is the ridge cap, which is applied at the peak of a roof where two opposing roof slopes join. Other flashing include transition flashing, end wall, side wall flashing, and valleys. Eave flashing include gable flashing and eave drip, which are commonly applied above fascia trim. For a roof pitch exceeding 5/12 (a 5 inch rise in 12 inches), the slope of the roof should be specified upon ordering ridge caps, end walls, and eave drip, Verify local code requirements. Both slopes should be specified when ordering transition flashing if a steeper roof slope meets a lesser slope. At the gable edge, the use of gable trim adds to the appearance of the structure and protects the fly-rafter, and a side wall flashing is used where the side of a panel butts up against an adjacent wall. In both instances, the installer/contractor should be careful to seal between the gable rake or side wall and panel with butyl