Roof tiles lifting

[Steve]

We recently had our roof replaced, with next door too (its a semi).

The tiles are similar to Marley Mendip, mentioned in another thread, where each tile has two "valleys" in it. I'll try to get a photo.

In a couple of places the tiles dont appear to be bedded properly. One is at the bottom of a valley - the bottom tile appears to have lifted slightly from the tile next to it.

The other is right on the border between us and next door. Same symptom.

The tiles previously were flat concrete tiles.

Is this anything to worry about? The rest of the roof looks fantastic. It was done by a reputable local roofer.

 

[datarebal]

Sounds like the first cut tile in the valley may be cocked up by the valley system used..it's fairly common to see this , but not nice...
the other may be the party wall between the two roofs causeing a hump where the timbers have settled over time.

The pictures should tell...

 

[SurreyRoofingEstimator]

Unfortunately with larger interlocking tiles any `cockers' tend to stand out. As datarebal says it could be the valley, a snot of concrete in the lap of the tile or just a slight deflection in the batten, the profile of the tile will actually help to disguise it a bit, looks a lot worse with a flat tile such as a Stonewold