There are numerous types of roofs with tiles that typically need repairs.  The three main types of tile roofs consist of concrete tiles, clay tiles, and sand-cast tiles.  Jack (Mr. Roofer AZ) recommends an annual roof inspection.  Tiles can crack from expansion and contraction, from monsoon storms with high winds, and from foot traffic.  It's important to get these cracked or damaged tiles removed and replaced to protect the integrity of your roof and to protect your roofing underlayment from the sun and water intrusion.  If we can help you with any roofing inspections and or roofing repairs, give Jack a call at (480) 262-5522.