Is this valley tile work acceptable on an older tiled roof?

[paoloz]

Hi everyone,
I would appreciate some opinions on recent roof work carried out on my 1930s tiled roof.
The main work involved EPDM rubber installation to a valley area that had been leaking. The roofer installed new lining/membrane work to the valley and lifted/relaid tiles around the area.
My concern is mainly about the tile work around the repaired valley. During the work, several tiles appear to have been broken and replaced with newer tiles, and some of the tiles near the valley do not seem to sit or align as neatly as before.

• 

I understand that some tile breakage can happen on older roofs during valley work, especially with older reclaimed tiles, so I am trying to understand whether:

• the tile positioning/alignment is mainly cosmetic,
• or whether there are any signs of poor installation that could create future problems.

At the moment I have not noticed any obvious leaks, although it has not rained since the work was completed. However, I am concerned about some uneven tile positioning near the valley cuts.

Thank you.

 

[datarebal]

it's not correct . rh side has a valley tile missing hence the pig on the left .
pretty diyish

 

[paoloz]

Hi,

After looking more carefully at the photos and inspecting the area from inside the loft, I realized that the line of tiles next to the valley has been brought significantly lower into the valley area compared to the original roof alignment (approximately 10–15 cm).

In the attached photo, I added a green alignment line to show where I believe the last line of tiles would normally sit on both sides of the valley.

I believe this is very likely the main reason why the additional replacement tiles became necessary. However, I still cannot really understand why the tile line needed to be brought down so much compared to the original layout.

 

[datarebal]

rh green line says a lot.
it's not correct and a mess