Fasten panels with a minimum of 8d Common (0.131-inch by 2-1/2-inch) nails spaced a maximum of 6 inches on center at supported panel ends and edges. At intermediate supports, fasten panels 12 inches on center. In high-wind areas, more fasteners may be required.
What kind of nails do you use for roof sheathing?
Builders generally use 8d common nails, which are approximately 2 ½ inches long and 131/1000 inch wide in diameter. The nails should be spaced no more than 6 inches apart and attached 3/8 inch from the sheathing panel ends and edges, according to the Engineered Wood Association.
Should I nail or screw roof sheathing?
The cheapest and easiest is to re-nail or, better yet, screw down the sheathing when you replace your roof covering. The other approach is applying an AFG-01 rated adhesive to enable the roof sheathing to withstand pressure to 250 pounds per square foot or greater.
Should roofing nails go through the sheathing?
It is crucial that roofing nails of the correct length were used to secure the shingles. The sharp tip of the roofing nail should pass through and extend approximately 3/8-inch past the underside of the roof sheathing.
Can you use screws for roof sheathing?
Screws can be used for even greater withdrawal strength, but should be sized by the building designer. Staples are not recommended for roof sheathing attachment in high-wind areas. … Oriented strand board (OSB) is one of the most popular materials for roof sheathing.
What is the nailing schedule for roof sheathing?
As such, the nailing schedule is typically the familiar 6 inches on center at supported panel edges, including gable-end walls and 12 inches on center over intermediate panel sup- ports. Note, however, that minimum 8d nails (0.131 x 2-1/2 inches) are recom- mended for all panels 5/8 inch thick or less.
What is the best material for roof sheathing?
OSB is now the most-used sheathing and subflooring material for new roofs and roof replacements. OSB is currently selling for less than plywood by approximately $3 per sheet, meaning a savings of several hundred dollars per conventional home.
Do roof sheathing nails need to be galvanized?
Roofing nails are not measured by “pennies” but rather by inches and are clearly labeled as roofing nails. Roofing nails tend to be galvanized, a process that makes stainless steel resistant to rust by coating it in a layer of zinc, which does not rust.
Why do roofers use nails instead of screws?
One of the main reasons why screws are better than nails at metal roof construction is the fact that they tend to hold for much longer. … Normally when you use the cheaper and easier to install nails, expansion and contraction will result in withdrawal of the nail from the roof and wood.
Should I use nails or screws for plywood?
To start with, most experts recommend screws over nails when working with plywood. Nevertheless, there are many projects built using nails with plywood. In most cases, the nails used are from a pneumatic finish nailer and are used in conjunction with wood glue.
Can I use 1 inch roofing nails?
Length of Roofing Nails
Roofers seek to use just the right length of nail so that the decking (or OSB) is completely punctured by the nail. … If you’re using typical architectural shingles and 3/8-inch-thick sheathing, you’ll need 1‐inch nails. If your building codes require thicker sheathing, you’ll need 1 ¼-inch nails.
Can a roofing nail be too long?
Yes, they can. If they are too long, they will protrude through the sheathing at the roof overhang and be visible. We call these “shiners.”
How long should my roofing nails be?
Proper Nail Application For Asphalt Shingles
Nails should have a minimum, nominal shank diameter of 11- or 12-gauge, and a minimum head diameter of three-eighths of an inch. The length of each nail must be a minimum of 1¼ inches long, and for roof-overs, Atlas recommends a nail length of at least 2 inches.
What is the minimum thickness of roof sheathing?
Roof Sheathing Code Requirements
The minimum requirement for roof sheathing is ⅜” thick. There is no upper limit on how thick your roof substrate is. Thickness allowed depends on how far apart rafters or trusses are spaced and the rating of your roof decking.
Do you have to stagger roof sheathing?
Staggering panels by at least two supports is recommended. During the installation of OSB, the rough surface side should be facing up. This rough side is a screened or skid-resistant coated side. The panels should be spaced 1/8-inch apart at the ends and edges.
How much overhang should a plywood roof have?
The overhang is multiple meaning that the sheeting you would overhang some 3/4-1″ followed by a drip edge then if using shingles another 1″. If using metal w/o drip another 3/4-1″ past the wood sheeting. You would want to keep your completed overhang close to 1-1/2″ if using gutter.