The top three concrete tile roofing repair areas are listed here.  1) Cracked tiles and mortar packs - your roof should be inspected yearly to make these typical maintenance repairs.  2) Dead Valley areas. These areas get a lot of water and you can find clogged metal channels and deteriorated underlayment.  3) Improperly installed roofing vents and skylights. These roofing areas along with chimneys tend to have a lot of water leaks for various improper installation issues.  Keeping your roof properly maintained and inspected is important, especially in our Phoenix, AZ heat.  High temperatures are hard on Phoenix area roofs.  Small repairs that are left unrepaired can lead to larger more costly repairs and even roof replacement.  If you need an experienced and reliable roofing inspector to take a look at your roof give Jack Mr. Roofer AZ with Phoenix Pro Roofing a call at (480) 262-5522.