Clay tile roofing for Phoenix homes and historic blocks

Both materials handle Valley sun well, but they behave differently. Clay is fired, so it is denser, lighter per piece in many profiles, and permanently colored. It also chips and cracks more easily under a careless boot, and it typically costs well above concrete. Concrete tile is heavier, tougher underfoot and much cheaper, but its surface color can fade and its profile edges are thicker.

For most tract homes, concrete makes more financial sense. Clay earns its price on custom builds, historic houses and homes where the roof is a big part of the architecture. If you are weighing both, our concrete tile installation page explains that option in the same level of detail, so you can compare like for like. We are happy to bring a sample of each to the house so you can see them side by side in your own light.

Two-piece barrel roofs use a pan tile laid concave side up with a cover tile over each joint. They are set with mortar, wire ties or clips depending on the system and pitch, and the coverage changes with how much the tiles overlap. One-piece S tile combines pan and cover in a single piece and installs faster. It costs less and suits simpler roofs, though it lacks some of the deep shadow and irregular texture that make barrel roofs so recognizable on older Valley homes.

On barrel roofs, we stagger the cover tiles carefully, keep exposure even along every course, and use bird stops or mortar at the eave so the open ends do not become nests. Mortar is mixed and colored to blend with the tile and kept off the waterway so it does not block drainage. Ridges get the same attention, because a sloppy ridge is the first thing anyone notices on a clay roof.

Under all of it, we install a heavy two-ply underlayment or a high-temperature synthetic. Clay tile is a long-term roof, and the base needs to keep pace. We also check ventilation at the same time, since attic heat shortens the life of every layer above it. On homes with little or no soffit venting, we often add low-profile tile vents near the ridge so hot air has somewhere to go in August.

On an older clay roof, every tile we break may be hard to replace. Some handmade or regional tiles are no longer produced at all. When we relay a clay roof, we remove tiles by hand, cushion the stacks, and inventory breakage as we go. Replacement pieces come from reclaimed stock where possible, and we tuck new tiles into hidden areas. We keep a written count so you know exactly how many originals went back on.

Clay roofs also suffer from well-meant repairs: tiles set in thick black mastic, gaps filled with spray foam, or pans swapped for concrete pieces of a different curve. We undo those where we can. Each of those shortcuts traps water or blocks drainage over time. For isolated cracked pieces rather than a full job, our cracked tile swap service covers single-tile matching, and the same care applies to clay.