Are exposed nails ok?


#1

Recently I replaced my roof and I have a narrow area that required laying shingles. In this area the contractors nailed down the shingles and covered the nail heads with a black colored substance. I am worried whether nails would eventually get rusted and that I may get a leak. Also in here the flashing is underneath the shingles, which would cause the rain water to go underneath the shingles, which is again isn’t very good.
Was there a better way my contractor could have done this job? If I call him back to fix it, what should I be asking him to do?

Picture can be viewed here: https://drive.google.com/file/d/0B0sqTWrQBwg4c0ViVi16Qm1JdlBUeWc4ck5hNy1xV0RlQzJz/view?usp=sharing


#2

Not my preferred method, but it may be normal in your area to cover flashings. Done properly, it is okay.


#3

It’s ok as long as they went under flashing with the shingles below that row. Looks like they put a dab of plastic cement, I would recommend putting a polyurethane caulk . I use NP1 it comes in different colors you can find it at roofing supply stores


#4

I’m going to say bad idea. Water gets under the shingle at the wall and unless they bedded the shingle in asphalt, it will run thru the nail hole. Might take a while, but it will rot.


#5

Yes there is a better way to do it but I’d wager that 75% of roofing companies in America would have done the exact same thing. I would’nt worry about it.