Ridge Tile Query

[Rautospoon]

Hi. I live in a 30 year old bungalow and the 2 lines of sloping ridge tiles to one of my "hips" could do with attention.
Simple question, re-do (properly !) with (as present) bedding on mortar or replace with modern dry ridge system ?
Which option is best / preferred / recommended ?
Many thanks.

 

[jj4091]

Never used dry ridges but I would imagine you have to have good felt under them.

 

[aveatry]

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