In article , BigWallop
writes

Ha Ha Ha Ha Sorry David, but that sounds a really daft idea to me. There
ain't a hope in hell you'll lift a double garage roof with tiles on, even a
few inches off its supports, without it falling to bits. Do you realise the
weight it will be ? Approximately six meters by five meters of slate tiles
alone is about two tonnes. Unless you brace all the bits together and lift
the whole thing with a properly slung crane, then you're asking for real
troubles.

Try it, and come back and tell us how you got on. :-))

I could try a compromise and strip the tiles off and jack the rest but
then its questionable whether its worth it when a complete strip down
wouldn't be much more work.

--
David