So they started this morning. Knew for certain they'd find 'extras'. Since the quote was so much less than others.
Can't do a felt overlay. Due to the pebbles which were on the old.
So remove the old.
One end of the flat roof goes under a slated part (up to the roof apex) Only three courses high. All the slates and ridge tiles have to come off - and being artificial, replaced with new.
New quote 3 times the first.
Pretty well expected.
They do seem to know what they're doing though. So will be happy if a decent job at the end.