Roofing in Arizona is a materials problem before it is a storm story. Low desert houses carry concrete tile, foam, and older flat built-up roofs that bake for months and then meet a short violent rain. High country houses carry shingles, valleys, and snow that sits, melts, and refreezes along the eaves. The rim towns see both sun and ice in the same year. Name the surface and the town before you describe the stain on the ceiling.
Tile fails in a particular way. The tiles can look tidy while the underlayment beneath them has dried, cracked, and quit. A monsoon wind drives rain uphill under the laps, and the leak shows up far from the wet spot you see outside. Foam roofs blister, pond, and open at penetrations. Flat roofs on older desert houses hold water against parapets. Shingle roofs in Flagstaff and the White Mountains lose granules, open at pipe boots, and dam ice. None of those are the same repair.
From the ground, look for stained eaves, loose tiles in the yard, soft spots at a valley, and staining around a cooler curb or a vent. Do not climb to prove a point. Say whether the leak appears only in monsoon wind, only after a rare winter rain, or every time the swamp cooler runs. Say whether the deck has ever been soft. A patch at a boot is a different scope from a tear-off, new underlayment, new flashing, and a haul-away.
Ask what the work includes at walls, chimneys, and skylights. Those joints cause the return leaks. Ask about ventilation on a shingle roof and about how a tile roof will be walked so the field is not cracked by the crew. Ask who pulls the permit where the town requires one, and what happens if the deck underneath is rotten once the covering comes off. Get the scope in writing before anyone strips a slope.
Match the roof to the climate it actually lives in. A foam system that survives in Yuma is the wrong assumption for a pine town that carries snow, and a mountain shingle detail is not a Phoenix tile job. Call the number on this page.