if it slow down no problem,idealy get someone to foot ladders,get length of lead, fix where exposed lathe is showing from missing slate,push slate back into place, and the bend lead clip over end of slate to hold in place,if you need any more free help advise or even free quote please feel free to contact me,copy and past into browser, thanxs josh
http://www.fixroof.co.uk
josh, April 2008