Re: Nail disaster
It is unfortunate that you have to clean up this mess, it happens more frequently than you might think, even when the roofer uses care to select the proper nail.
Any nail over about 1/8" will need to be ground off with a grinder. You can use a belt sander, but odds are the sharp tips will eat the belts before you get much area done. A small handheld angle grinder will work great for this, you will need to be careful and grind slowly so as not to overheat the nails and burn the wood or melt the roofing they're holding down. Lest you thing this wouldn't happen, it only takes a second for the tip of that nail to glow red hot, it will burn anything touching it. So, you will basically "tap" the tip of the nail with the grinder a time or two and move to another nail, work across 3 or 4 nails at a time and you won't have over heating problems.
Once you get the tips knocked down, you can switch back to a belt sander or an orbital sander, again the belt sander will be fast, but it will also cause heat very quickly, so don't over stay your welcome on any one nail.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!