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Had a roof replaced,there was exposed nails with a sealant over them on the last row of shingles that butts up to a wall of vinyl siding. I do not think this is the proper way of installation. Advice on the proper way.
The last row gets nailed (how else would you do it?) and the roofer can either tar the nail heads or place a flashing/ridge over it, depending on the location.
HOW DO YOU INSTALL THE FLASHING AND RIDGE? mhoff
At this point the best advice I can give you is: call your roofer and ask him to finish his job the way you want him to. If you need to add extra, that's OK.