“If the tiles look fine, the roof is fine.”
Tile is the visible covering, but underlayment, flashings, fasteners, and transitions also manage water. An intact surface does not establish the condition of the assembly underneath.
“Clay and concrete tile are interchangeable.”
They differ in composition and available profiles. Product dimensions, weight, fastening requirements, and compatibility matter when selecting a new system or finding a replacement tile.
“A tile roof needs no maintenance.”
Broken or displaced tiles, debris, and flashing issues still need attention. Do not walk on the roof to investigate; foot traffic can damage tiles and create a fall hazard.
What to ask instead
Ask for a system-specific assessment: covering, underlayment, fastening, flashing, and structural suitability. Written product and installation terms are more useful than a general lifespan promise.
Make it specific to your home.
This is general planning information, not a diagnosis, quotation, insurance determination, or promise of product performance. A property-specific assessment and written scope are the next steps.