Hi, I will be replacing several asbestoes tiles that have broken / fallen. I will not be able to remove the previous nails nor get the new nail under the tile above it, is there a way? Should I do anything special with the exposed nail (silicon) to prevent water seepage under it? Some of these tiles will be continually exposed to weather and some sheltered. I am clueless about this so any suggestions short of some one else doing the work will be appreciated.
Thanks in advance, Bill