07/31/2026
FAQ Friday, and this is the finale of our Nail Series. The question: "What happens if shingles are nailed too high? And what nails do you use?"
Every shingle has a nail line printed on it by the manufacturer. That line is not a suggestion. It is the exact spot where your nails also catch the top edge of the shingle below it.
High nailing means the nails go in above that line. When that happens, the fasteners miss the course underneath, so each shingle is basically held by half the nails it should have. The result is shingles that slip, blow off in wind, and a manufacturer warranty that is voided. It is one of the most common defects we find on a cheap, rushed install.
We nail on the line, every course. And we use proper corrosion-resistant roofing nails, not staples and not the cheapest brights that rust out. As GAF Certified Plus contractors, we can also back qualifying roofs with the GAF Silver Pledge warranty.
If your roof was recently done and you are not sure it was nailed right, get a second opinion. We are happy to take an honest look.
That wraps the Nail Series. Missed a part? Comment NAILS and we will send you Parts 1 and 2.
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