Sorry to butt in, I have the same problem…asbestos cement roof, most of which has become porous so I have rows of droplets under each channel 🙁 Only took 10 days in my new place before the problem showed itself.
What are these insulated panels you are looking at? Got a link? They sound perfect as long term I’d like to add a few courses of bricks to increase the height, so its a bonus if I can put a new roof on now, and then remove it temporarily when I do the brickwork…
Hoping to turn it into an overhanging roof so I can season/store firewood under the overhang!
Edit: Just read on a website that the HSE are likely to make removal of low risk asbestos roofing ‘notifiable work’ sometime during 2012, I guess that didn’t happen as I was under the impression you could still double wrap it and take it to a tip with the right facilities.