Replace those tiles with asphalt shingles: they last just as long as the felt/tar paper under layment does on a tile roof, and every time you get a decent hailstorm your insurance will buy you a new roof. We had ours replaced in Sept 2020 as the then 16 yr old tile roof was leaking in three rooms. More than half the homes in my neighborhood have switched to asphalt shingles because the tile roofs are now leaking like sieves.I'm "liking" your post, not because I'm happy you have to replace your roof, but because I'm in the same situation.
We bought our current house new in 1994, so we have an old roof. Here in SoCal, we are bracing for this so called "Super El-Nino" which (may) means heavy rains are a-comin'.
I just got our first estimate for our roof and it wasn't good. The inspector did a really thorough job - poked under all the corners of the roof, pulled tiles to look at the decking and felt papering, flashings, fans seals, ducting, etc. Took pictures to document it all to show us first hand.
Our roof is definitely showing severe signs of age and is compromised.
And we have solar panels, so that means disconnecting, removing, storing, re-installing, re-connecting after the new roof is in place.
The estimate was for $34K and that's keeping our existing tiles which are in good shape.
I've got two more estimates coming next week before making a decision.
I just hope we can get this done before the predicted heavy rains.


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