A good contractor will inspect the roof sheathing after it is removed to determine if nail misses are likely to occur.
Hand nail vs gun nail roofing.
A hand nailed roof trump s a gun nailed roof any day.
Nails not places correctly will cause roof failures and this is very common with nail guns.
When you use a gun usually a third or under driven a third or over driven and a third or correct.
Hand nailing shingles is better than using a nail gun or a pneumatic nailer because it allows the roofers to feel the nail placement and ensure optimal installation.
But it s important for these roofers to always test their tools before using them.
Some roofers think that using a nail gun delivers the same level of precision as hand nailing.
Most times the roofs that have been put on with a nailer all nails stay in the wood when tearing off.
Hand nail installers are quick to feel a nail miss the wood sheathing while nail gun operators have to rely on sounds and intuition.
Hand nailed roofs most nails come out during tear off.
Taking into consideration the same size nail is used.
Hand nailing can be fast but the same man at the same skill level doing the same job will perform faster using a gun and compressor.
A hand nailed roof is hands down a better roof than using a nail gun.
Over or under pressurized nail guns can result in nails that are either driven too hard or not driven deeply enough.
However most manufactures claim that either method is a viable option.
I have roofing crews that can hand nail just as fast as a gun.
There just are not many shinglers that have the skill level to keep up with a man with a gun.
Click here to view my recommended gear page to see which roofing hammer and tools i believe are the best.