Acceptable dormer flat roof (England, UK)?

[Helpwithtradesworks]

Hi - recently had dormer flat roof re-done in felt and noticed the following which I presume the roofer should come back to rectify?

Slate not sitting flush where these had to be taken up during the works (some were replaced with the darker ones).

Felt edges exposed.

Anything else?

Appreciate any additional insights!

 

[catlad]

Looks like a decent tradesman to me.

 

[ChrisJP]

Yup - looks like a pretty neat and tidy job to me.
Presumably the slates that were replaced were because the old ones broke as they were removed. If the new ones are actual slate, they'll probably mellow as they age and eventually match the older ones. If they are composition "imitation" slates, this probably won't happen but they'll have been a lot cheaper - which I presume the roofer discussed with you and their use was assumed in the roofer's quote?

 

[^woody^]

The edge is wrong. The felt on the kerb edge and the drained edge should be on top of the deck felt. That joint should not be there on the edge, it is vulnerable.

The corners are poor, and the indentation shows lack of care.