Good tile roof repair starts with a simple fact: on a clay or concrete tile roof, the tiles shed most of the water, but the underlayment beneath them is what keeps the house dry. A cracked tile is worth replacing, but a leak usually means the layer underneath has torn, aged or been exposed. Fix both, carefully, without breaking more tiles.
Leak under a tile roof? Call Cannon Roofing at (940) 627-1045 — open 24/7 — or arrange a free inspection through our contact page.
How a tile roof really keeps water out
Tile is tough. Clay and concrete tiles can outlast several asphalt roofs. But tiles aren't sealed to one another, and some wind-driven rain always gets beneath them; the system is designed for that. That water runs down across the underlayment and out at the eaves.
So when a tile roof leaks, the question isn't just "which tile is broken?" It's "why did water get through the layer underneath?" Our comparison of tile vs. shingle roofs in Texas covers how the two systems differ.
Why tile roofs leak
Aging underlayment
Underlayment wears out long before most tiles do. Older felt, baking under sun-heated tile through Texas summers, dries out and becomes brittle, cracking at laps and around fasteners. Once it fails, water that was always getting under the tiles reaches the deck.
Cracked, slipped or missing tiles
Hail, falling limbs and foot traffic crack tiles; failed fasteners let them slide down. Each gap exposes underlayment to direct sun and rain, speeding its breakdown.
Flashing and penetrations
Valleys, walls, chimneys and vent pipes need metal flashing and properly formed pans. Mortar or sealant packed where metal should be is a common source of leaks on older tile roofs.
Debris and blocked water channels
Curved and flat tiles both have channels that carry water down to the eaves. Leaves, nests and broken tile fragments can block those channels and the valleys, so water backs up under the laps and sits on the underlayment instead of draining off. Trees overhanging a tile roof make this far more likely, and it's one reason valleys on tile roofs deserve a look after every leafy fall.
Tile roof repair for cracked tiles: doing it without more breakage
Tile can crack under a careless footstep. A repair that breaks three tiles to replace one isn't a repair.
Walking the roof
Experienced crews step on the lower, overlapped part of each tile where it's supported, or use foam pads and walk boards to spread weight. Our article on how walking on a roof causes damage explains why foot traffic matters so much.
Removing the broken tile
The tiles above are gently lifted and wedged, the broken tile's fasteners are cut or pulled, and the pieces are removed without disturbing the laps around it.
Checking what's underneath
With the tile out, the underlayment and deck beneath are inspected for tears, rot or old patches. If it's sound, the replacement goes in. If not, that's the real repair.
Setting the replacement
The new tile is fastened in the way the tile manufacturer calls for, whether nails, clips or adhesive, so it won't slide or lift in wind.
Matching older tiles
Concrete and clay tiles come in many profiles and colors, and some lines are discontinued. Salvaged tiles, or tiles borrowed from a hidden area of the roof, are often the best match. Whoever does the work should show you the options before any swap.
When underlayment replacement is due
If leaks are appearing in more than one place, if underlayment crumbles when a tile is lifted, or if the roof has reached the typical age where the original underlayment gives out, spot repairs start chasing a system-wide problem. The usual answer is a lift-and-relay: tiles are removed and stacked, new underlayment and flashing go down, and the tiles are reinstalled with broken ones replaced.
Signs it's time
- Several leaks in different areas within a year or two.
- Brittle, torn or missing underlayment visible at the eaves.
- Stains or soft decking in the attic in multiple spots.
- Repeated repairs at the same valleys or walls.
Getting a tile roof inspected
It also helps to know what to expect on the day. A careful tile inspection usually starts in the attic, looking for stains, damp decking and daylight, then moves to the roof surface with walk pads. The inspector notes cracked, slipped and missing tiles, checks flashing at every wall, valley and penetration, and may lift a few tiles in suspect areas to see the underlayment directly. An honest inspection tells you whether you need a few tiles swapped, a flashing repair, or a broader underlayment plan. Cannon Roofing has worked on North Texas roofs since 1994, and our roof repair team is factory trained, with every employee carrying the Technician Seal of Safety — background checked, drug tested and insured. Tell us about your tile roof and we'll give you a straight answer on what it needs and how we can help, with photos and plain language.
Frequently asked questions
Can a single cracked tile cause a leak?
Not always right away, since the underlayment below is the real barrier. But it exposes that layer to sun and rain, so it should be replaced before it becomes a leak.
Can hail damage a tile roof?
Yes. Large hail can crack or chip clay and concrete tiles, and cracks aren't always visible from the ground. Have the roof checked after a significant storm.
Do tile roofs need new underlayment eventually?
Yes. Tiles often outlast the underlayment beneath them, so at some point a lift-and-relay is needed even if most tiles are still good.
Have cracked tiles or a leak under your tile roof? Call Cannon Roofing at (940) 627-1045 — any time, day or night. Tell us what you're seeing, and we'll talk through your roof, arrange an inspection and explain the repair that actually stops the water. You can also reach us through our contact page.