DerbyDad03 wrote in news:cb6aa2a5-6a40-46ab-9f5d-
:

I just got a call from a roofer who looked at my roof and prepared an
estimate. Some of you may recall that I had what I called “nail pops”
pushing through the tabs of my 20 YO asphalt shingles.

All of the following statements are "according to him"


- There is no such thing as a "nail pop".

Strike 1

- Ring shank roofing nails cannot back themselves out due to
contraction-expansion cycles or any other reason.

Strike 2 - Ring Shank roofing nail???

- In my entire career, I have never seen a roofing nail back itself
out

Strike 3. The rest is moot.

and I have done hundreds of roofs for all of the high-end builders
in the area. They wouldn't use me if I didn’t know my stuff.
- The reason your house has nail heads popping through the shingles is
because these were "high nails" - nails that were never properly set
by the contractor who installed the roof. The compressor didn't seat
the nails completely and the roofer was too lazy to grab a hammer and
pound them down.
- I will hammer all of your high nails down and add a second layer
over the original
- I will guarantee, in writing, that the original nails will not back
themselves out and damage the new roof.

So what's the deal? Can roofing nails back themselves out as I have
heard from many sources or does this guy know the "real story"?