Installing roofing on a home is basically a pretty simple process. Which may explain why there are so many roofers. This may also explain why bad roof jobs are one of the most prevalent consumer complaints.
The roof shingles are the most obvious component of the roof, but what about that shiny metal flashing. Flashings are used to shed and repel water from around penetrations through the roof. Almost without exception every roof is going to have at minimum a plumbing vent and or a chimney.
The thing about flashings is they aren't supposed to be nailed. At the very least not have exposed nails going through the metal. Yet I find nails through flashings time and time again.
The top photo is a classic example of unnecessary nailing. That is a common plumbing vent with flashing. Notice the two nails at the bottom, I mean how could you not, right?
I find the logic of doing this hard to follow. The roofer is putting in hundreds of shingles one after another. He nails them just above the center so the next shingle will cover over the nail. Comes to the vent, slides on the flashing and puts two nails in the front where nothing can cover them over. Huh!
Does he not see the obviousness of the broken pattern? Yet I find this done all the time. Mind boggling.
The next photo is not quite as common, but I do see it fairly frequently. This roofer decided to reinforce the attachment of the chimney counter flashing to the chimney with some nails. Again what was this guy thinking? I mean no why that's not going to leak, yeah right!
It looks like some roofers just love them nails.
James Quarello
NRSB #8SS0022
JRV Home Inspection Services, LLC
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Of course if everyone did them like this guy did, lifting would not be a problem.
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