Tile roofs in LA: what to know before you buy or repair

Tile is the signature roof of Los Angeles. Drive through any older neighborhood and you will see clay and concrete tile that has been on the house for decades, holding the Spanish and Mediterranean character the region is known for. Tile earns that reputation: it lasts a very long time and shrugs off the sun. But there is one thing about tile roofs that surprises homeowners at the worst possible moment, and understanding it before you buy or repair saves both money and frustration.

The tile is not the whole roof

Here is the surprise: a tile roof is really two layers, and the tile is only the top one. The tile sheds most of the water and takes the sun, but the waterproof barrier that actually keeps water out of your house is the underlayment beneath it. That underlayment ages and wears out well before the tile does. So a fifty-year tile roof does not stay watertight for fifty years on its own, the felt underneath usually needs replacing partway through, which our page on roof underlayment explains in full.

This is why so many people are baffled when a tile roof leaks while the tile looks perfect. The tile is fine; the underlayment beneath has aged out. The fix is to lift the tile, replace the underlayment, and reset the same tile, which is a reroof rather than a full replacement, covered on our tile roof repair page.

Tile is heavy, and that matters

Tile is much heavier than shingle, so the roof structure has to be built to carry it. Most homes designed for tile are fine, but if you are thinking of switching from a lighter roof to tile, the framing needs checking first. Weight is also why layering new roofing over old is a bad idea on tile, and why a settled or sagging roof deserves a look, covered on our sagging roofline page.

What it costs, and why

Tile costs more upfront than shingle, both in the tile and the labor, since it is heavier and set piece by piece. But spread over its long life, the cost per year is low, which is part of the appeal for homeowners staying put. Clay costs more than concrete and holds its color longer. Our pages on tile roof cost and tile versus shingle break down the numbers and the trade-offs.

Tile roofs still need upkeep

Because tile lasts so long, people assume it is maintenance-free, but the parts around the tile still need attention: the underlayment, the flashing at the chimney and valleys, and any slipped or cracked tiles that leave the layer beneath exposed. A little upkeep is what lets the tile reach its full life, as our page on tile roof maintenance covers.

Before you buy or repair

Check	Why it matters
Age of the underlayment	It fails before the tile does
Framing and weight	Tile needs proper support
Flashing at penetrations	Where most tile leaks start
Slipped or cracked tiles	Expose the layer beneath

If you are buying a home with a tile roof, or your own tile roof is leaking, the key question is the age and condition of the underlayment, not the tile you can see. A written roof inspection answers it, and from there the path is usually a targeted repair or a reroof rather than tearing off good tile.