It s that the roof sheathing is not thick enough for the nails.
How to hide roofing nails.
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If your roof is entirely flat it is recommended that you lay down two layers of roll roofing instead of one.
Use small pieces of plastic tubing over each nail point.
You can just paint over them and live with the result or fill in the areas with wood covering the tips.
When installing roofing nails always make sure the nail is flush to the shingle.
Depending on the size of nails you may need one or two different tubing sizes.
I don t mean to make too much of this as most of these nails will be stuck in the shingles and they will stay in the shingles on the way to the truck.
A few roofing nails are not going to cause much problem but if you are wary of this happening you can lay down a tarp around the areas that are likely to catch some of these nails.
If you find that you run out of roll before you make it across the entire length of the roof during one of the courses this is not a problem.
If you do glue the wood with construction adhesive.
1 4 od 7 64 id and 3 16 od 3 32 id because i had two different nail sizes in my attic.
To pull each nail you first need to raise the head a small amount.
The best way to do that is to pound the pointed jaws of a cat s paw under the head.
Roofing nails are made of galvanized steel to protect them from the elements.
Don t use nails or you will poke through the roof.