You need to go crawl up in the attic. Look for moisture staining on the roof sheathing. That will tell you precisely were its leaking. With all the rain this summer, there more than likely will be wood decay fungi on it also(white fuzzy stuff)
30.06 now would be a good time to get in the attic and look around for leaks. luv2hunt is right on the money. add some water penetration and heat and darkness and organic fuzzy stuff will grow. it may give an idea how extensive the leak. look for disclored sheeting in the attic on the under side of the roof. sometimes the leak can be in a different location from the damage, it helps to think like water. water will follow the path of least resistance it may enter in one spot the travel and settle in another. crock has a good point as well. when a tile roof changes angles or direction some type of joint has to be made. this area usually has more exposure to the elements and is often where the failure occurs. nacho has experience with folks walking his tile roof and makes a good point too. limit the amount of traffic on the tiles they are fragile. first thing is to locate the leak. as for the repair i have very limited experience in repairing a tile roof. check all the flashing for cracking and seperation. if this can be done from the ground or off a ladder even better. nacho switched from tile to metal and he is happy. i went from asphalt shingle to metal and i am very happy. hope this helps and good luck.
hate to say it but I did the same thing with my house in Naples. got rid of the tile roof. replaced it with shingle. tile lasted a while but when they start to go, it is hell. My son in law is a commercial roofer-walmarts, sam's etc. he says whenever you have a roof joining a carport-porch-etc. eventually there will be a leak. he has played hell trying to find one one my house here in Ocala. metal carport roof joining shingle roof. another solution he uses is a white coating of some sort of sealer over the whole roof.
The white sealer you're talking about drgn4sr is probably the "rubber sealer" that's designed to be mopped onto trailer roofs. It is rather effective and a cheaper short-term (a couple years) alternative to a high-dollar roof replacement.
we use that white rubber coating on my great grandmothers house in jacksonville beach, right over the shingles, and reapply every year or so. May have to try some of that up there on grampas.
