I don't have an answer for you, but I suggest you add a pic and list your location. I'm sure this information will help whoever is knowledgeable in this area.
If you mean you had identified the leak, repaired it, and same spot is leaking again two years later, then I would suspect the spot and the repair. Did you remove the tile, repair the roofing, then reinstall the tile? I did not know that you can tile over the membrane which usually goes over a wood structure. Any wood structure outside is not stable enough for tile. Maybe the grout or thinset is abrading the membrane.
1 can place tile over membrane but not directly,,, whoever did this neither knew a proper method NOR realized it would fail,,, certainly hope it weren't vous :no: hate to face my bride, nagzilla, & confess it were me whodunnit :furious:
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