This last weekend we had a lot of wind and some of my shingles blew off. It just so happened that there were some shingles in the shed, I guess left overs from when the roof was done. Can I just go up and replace the shingles that blew off, or is there more to it? Also what do I need to put them on, ie size of nail, etc. I have an air nailer that can handle upto a 1 1/4" nail. The air nailer that I have. Will this work or will I need to hand nail them down. Thanks for the help.