New roof tiles into dorma look like they're running out.

[Daza]

Hi. Question for the roofers. My house was built in the 60's and the roof hasn't been replaced up until now. Or I'm in the process of doing it. I've stripped the back, re- felt and baton, re-tiled and it looks decent in my opinion. At some point before I moved in, the front had a dorma built. It wouldn't pass regs today, but it is solid. Proper old timbers, real wood. Not the rubbish the use today. I've stripped it back, and again re-felt and baton and I've nearly finished tiling. Did the same as the back of the house, measured down from the ridge, got my first baton right and worked up from there. But looking at it now. It looks like the tiles are running at an angle into the dorma and it's really bothering me. I've attached some images. Any advice welcome as my OCD is playing up.

[Redbeard]

When you say 'running out' I take it you mean running downhill to the dormer cheek. Am I right? I can see that )possibly) on the 1st pic (RHS) but not sure if I can see it on LHS, or whether I am just convincing myself I can! I am generally fairly pernickety, and I would not, I think, have picked up on that. How often will you stand and look at it? If it will annoy you forever, change it. If you can programme your eyes and brain to 'ignore', live with it.

 

Ah, I have just read again and seen:

On 19/05/2025 at 21:30, Daza said:

Any advice welcome as my OCD is playing up.

 

Hmm, maybe my advice above won't help then. I *suppose* you could basically eye it up, decide on what would look right to you, decide the adjustment required for the eaves course, alter the battens accordingly and go from  there. I cannot think of a more 'scientific' way. If that helps a little, good. If it doesn't, sorry.

[markc]

I reckon this is just an optical illusion as everything appears to be running parallel.

[Temp]

All I can see is something wrong with the very top row of tiles on the lefthand side.

 

[KA-CT]

I would suggest it's as a result of the party wall and gable both sitting slightly higher than the rafters. Gives the illusion that the tiles are running downhill into the dormer. They're probably not. 

[jack]

Either the battens/tiles are at a slight angle, or the roof itself dips towards the dormer.

 

Difficult to say from this angle, but the fact that it levels out again towards the bottom suggests it's the roof sloping/bending rather than the battens not being straight. Depending on how the dormer is supported, perhaps its weight has caused the roof to sag a little towards the middle? That would explain the symmetric nature of the slope either side of the dormer.

 

Whatever's causing the apparent angle, I suspect the scaffolding rails visually emphasise it. I reckon it'll be a lot less obvious once the scaffolding is down.