I ve tried several methods to try and get the nails out the grinder seems to be the best to avoid damage to the tin.
Removing roof nails from yard.
A small pry bar and a claw for pulling nails should be enough for small repairs.
Run a broom magnet over the yard to pick up.
Space the jacks no more than 4 ft.
Nail roof jacks to the rafters with at least three 16d nails through the roof sheathing and then nail on a 2x10 to prevent you and the shingles from sliding off the roof.
Corrugated roofing panels overlap each other making the nails located along the eaves or ridge line the easiest to find.
Tools to remove roof shingles and nails.
Find the nail heads on the roof.
Circle or mark the nails with a professional crayon for easy location later.
Look along the edges of the corrugated panels.
You really only need a couple of tools to remove roof shingles and nails.
When replacing metal roofing removing the nails is a tedious and necessary procedure.
Metal roofing is often made from recyclable materials many of which have an estimated lifespan of 50 years or more.
Carefully remove nails and bend it upward off the shingles with a pry bar.
How to easily remove roof nails from a metal roof.