In order to secure the plywood sheathing to the house structure, it is important for the nails to penetrate through the plywood sheathing.
Roofing nails should go through plywood sheathing when installing roofing material, as the nails need to penetrate both the roofing material and the sheathing to create a secure attachment to the roof deck. The nails are typically driven through the overlapping sections of the roofing material, such as the tabs of asphalt shingles or the ridges of metal panels, and into the plywood sheathing beneath.
When installing roofing material, it’s important to use the appropriate length of nail to ensure that it penetrates both the roofing material and the sheathing. The length of nail required will depend on the thickness of the roofing material and the sheathing. In general, the nail should be long enough to penetrate at least 3/4 inch (19 mm) into the sheathing.
Additionally, it’s important to use the appropriate type of nail for the specific roofing material being installed. For example, smooth shank nails are typically used for asphalt shingles, while threaded shank nails are used for metal roofing or other roofing materials that require a stronger grip.
Overall, it’s important to follow manufacturer’s instructions and industry best practices when installing roofing material to ensure a secure and long-lasting attachment to the roof deck.
