Possible issue with dormer roof

[pavilion21]

Hi
I was hoping someone can offer me some advice please.
We had a loft conversion completed in Oct 2018 by a well known and reputable specialist in our area and we were really happy with the quality until we lost all the ridge tiles during storm Eunice. These weren't mechanically fix but I understand this isn't a legal requirement.
However the roofer I employed to replace them highlighted a potential issue with the dormer roof. It appears that sections of tiles haven't been overlapped enough and the roof has been "stretched" to finish on a full tile. He struggled to replace a few damaged tiles on the dormer roof because the were so tight and said this wouldn't of be caused by the storm.
I hopefully have included a few photos to show what i mean.
Does anyone have any advice as to whether this is acceptable or do i have a case to contact the company to discuss it further.
Any help would be greatly appreciated.
Thanks

 

[datarebal]

Exposed headlap looks short. But maybe just an illusion . You need to measure the gauge used and roof pitch.
Ref tight tiles , that's weird . If the tiles are over gauge then they are easier to replace not harder
I guess your guy is using the correct replacement ?.. they possibly look like Mendips

 

[pavilion21]

Thanks for the reply, i've added an enlarged photo if that helps tell whether its an illusion or not. They're definitely the right tiles as I had spares. I think the side overlap was more of an issue when he was changing tiles, as they were locking together at the channels. This was his main concern.

 

[datarebal]

That's no good, post a close up of the damaged tile so I can see the head lap.(overlap)

The channels lock in ..that's why there are called interlocking tiles.
Swapping is a few seconds work. I don't know who you are using ...

 

[pavilion21]

Sorry, hope these are more helpful. The roofer is a local company with about 30yrs experience. Although we've never used them before, they came highly recommended.
Thanks

 

[datarebal]

We'll head lap does appear minimal. The tiles with partial exposed channels are poorly laid. Probably pulled to avoid a verge cut if there are verges.
Tiles are not Mendips as I thought .not much else to say really. Pictures have limitations ..