However where the roof deck is less than three fourths of an inch thick the nail should be long enough to penetrate fully and extend at least one eighth of an inch through the roof deck.
Roof shingle nail placement.
If you make a mistake and nail 6 per shingle instead of 4 you ll have wasted time money and effort.
For most shingles with sealant on the top surface place nails below the sealant strip but above the area that will be.
This chapter will demonstrate how to properly nail.
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Roofing experts know there are specific numbers of nails for each type of shingles.
Each shingle model has specific requirements for nails printed on each shingle wrapper.
Never place nails where they will be fully or partially visible after the roof is complete.
Critical aspects of nail placement include.
Gaf mastering the roof chapter 08 proper fastening is critical to the perfvormance of any roof system.
Use the correct roofing nail material size and grade as specified in the shingle installation instructions.
The length of each nail must be a minimum of 1 inches long and for roof overs atlas recommends a nail length of at least 2 inches.
Shingles with sealant on the back surface.
To avoid all this pay careful attention to the manufacturer specs.
Nails of the proper length should penetrate three fourths of an inch into the roof deck.