Loose dormer tiles, what to do?

[camerart]

Hi,
See photo of my dormer tiles. Some are loose.

A roofer is coming soon to do another 'quick' job, and he said he would push them back up, while he was up there. I assume that the nails have rotted away, and it needs completely re-doing.
This is a Edwardian house, and the tiles look original, but are they the best for the job these days?
Camerart

 

[noseall]

Hi,
See photo of my dormer tiles

I'm trying....

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• noseall
• 19 Jan 2015
• 1

 

[camerart]

I'm trying....

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• noseall
• 19 Jan 2015
• 1

Hi N,
Do you see anything now?
My neighbour told me that when he had his done they used adhesive to bond them together, does this sound a good idea?
C

 

[datarebal]

time to strip it. they will keep slipping and if your are lucky not hit anyone..

 

[camerart]

time to strip it. they will keep slipping and if your are lucky not hit anyone..

Hi D,
Yes, but I'm not sure how the edges fit. It appears that the timber covers them.
And It's easy to forget that they're up there when gardening.
C

 

[datarebal]

duty of care... you are aware its unsafe

 

[camerart]

duty of care... you are aware its unsafe

Hi D,
True, and it's on a long list. Next, regarding the roofer, is an hour in two weeks, and I've got to make the best use of him.
C