In article ,
John wrote:
Not D-I-Y but anything I need to ensure when
getting a quote for this?

The chaps who did ours lifted the tiles and replaced
the bottom 18" or so of roofing felt as well. Part
of the quoted job.

They also spotted a felting/timber problem further up
and 'accidentally' left the scaffolding there for an
extra 5 days for the roofer to use.

--
Tony Williams.