George wrote:
If rainwater is being held back due to the join causing a ridge,is it
acceptable for rainwater to stay there to the extent whats left behind is
touching the end of the tiles?

My belief is the whole purpose of a gutter is to catch rainwater and
disperse it via the nearest downspout ie no water should be left behind
providing the gutter is clear of debris or moss.

She's getting her relative on the case but I would like to know whats
acceptable and what isn't? roofers are saying its acceptable.

Cheers



Surely the ridge alone wouldn't cause that level of water. Maybe the
roofer left his flask up there