When you look up at your roof, do some of the shingles seem to be wavy along the edges? Perhaps some of the edges seem to be lifted off the roof surface. Often, this does not indicate an issue with the shingles themselves, but rather with the nails that are supposed to hold the shingles in place.
When a roof is shingled, each layer of shingles is positioned over the nails in the layer of shingles beneath it. If one of these nails pops up, the shingle on top of it will buckle or rise, too, which creates a wavy look.
Popped-up roofing nails are not something you want to ignore. Keep reading for a closer look at this problem and its solutions.
Why Do Roofing Nails Pop?