Adding dripedge to existing roof

I had some staining on the eaves halfway to my tile roof which is 15 years old I received an estimate from two roofing companies. One said to install 2 x 2 dripedge flashing to three rake edges the other said nothing like that. Is it o.k to install dripedge to an existing roof? or will this create more problems?

sounds like either your sub roof under the tile has failed or
your edge metal has rusted.
if its the latter then you may be able to replace edge metal.
if your sub roof is shot then your wastin you money tryin to fix.