Nailer Spacing For Metal Roofing

Installing wood stripping under a tin roof.

Nailer spacing for metal roofing.

Boards require a minimum of two nails per truss while sheathing requires six nails due to face width and nail spacing. Fasten drip edge on eaves with galvanized nails and a hammer about 12 inches. Purlins are non pressure treated 1 x 4 x 12 lumber that is installed on to the roof in a specific layout pattern and screw pattern. Do all roofing projects require purlins.

This article describes the fastener screw or nail schedule for several types of exposed fastener metal roof systems citing manufacturers installation manuals and guidelines. Nail placement must be in the ribs for roofing ap plications to minimize the potential for roof leaks. A structure s roof truss spacing can vary from every 12 to 24 inches. Wider panels allow for greater spacing between rafters.

Continue adding panels until the roof is covered. However the screw placement diagrams commonly are based on the on center spacing center to center of the purlin rather than the gap between purlins to determine the length and spacing of the screws needed to prevent wind blowoff for various design wind speeds so pay close attention to that difference. The roofing is manufactured in panels that. Wood screws with combination metal and neoprene washers.

Put a mark on the ribs or next to the ribs. Tin roofing also known as metal roofing is considered more durable than composition or wood shingles. May be manufacturer. What i ve read about placement is on the flats for walls on the rib or flat for roof screws and on the flats for roof nails.

The purpose of the purlins is to provide a solid foundation for the metal roofing panels and trim to be screwed to. Spacing recommendations for exposed fastener metal roof systems. Perfect placement in the center of the purlin. The nail through the top of the rib so the washer is compressed securely against the metal.

A metal roof must also allow for some overlap on each side of the panels which will reduce the effective width of the panel. We do recommend it however. We include a discussion of the requirement for use of a greater number of metal roof fasteners in high wind zones and we give an example schedule of the. Align the other end s edge with the last screw nail you put in.

Metal roofing is also available in the form of shingles. Each of these factors plays a role in determining how many nails you ll need to use per board during roof sheathing application. You may need to cut panels to fit angles using a circular saw with a metal saw blade. Put the nail end on the 2x purlin girt.

Over driving the nail can split the washer and dimple the metal causing leaks.