Mortar Failure at Hips and Ridges — Costs and Timelines
What moves the number on a tile roof in North Hollywood, and what a quote should already include.
Price is the first thing anybody wants and the last thing most contractors will commit to. The working figure for a tile roof in North Hollywood is $11.00 to $19.00 a square foot for a full underlayment replacement with the existing tile relaid, and the rest of this explains what moves it, because the same roof can differ by half again depending on things you can check yourself before anyone quotes.
What you are actually paying for
The tile itself is usually salvageable, so the cost is mostly labour: lifting and stacking, replacing underlayment and battens, then relaying. Breakage rate during lift-off matters, and so does whether matching replacements for the broken ones are still available.
Where quotes diverge
Deck repair should be priced per sheet in writing before work starts, because it is the one item nobody can size until the covering comes off. Bird stops, eave closures and the mortar at the ridge are what most quotes leave out. Leave them off and you have an open roof edge that invites nesting, debris and, in the fire zones, embers. It is also the line that most often separates two quotes that looked identical on page one.
How North Hollywood changes the figure
North Hollywood takes the full inland summer with very little relief after dark, and the ultraviolet load on a south-facing slope here is as hard as anywhere in the county. Asphalt ages from the top down under it: once the granules have gone the mat underneath turns brittle and starts to crack. Mostly single-storey post-war housing with later additions, which puts a transition detail in the middle of the roof where two eras of workmanship meet.
What we look at before quoting
- Underlayment age and condition, checked by lifting tile rather than guessing
- Broken, slipped and previously face-nailed tiles across the field
- Batten condition and fixing, particularly at the eave course
- Sherman Oaks metal, which usually corrodes before the underlayment fails
- Ridge and hip mortar or mechanical fixing, and any movement in it
- Bird stops and eave closures, present and intact
- Flashing at walls, chimneys and every penetration through the field
Common questions
Why is one quote thousands cheaper than another?
Almost always because it excludes something. Compare the deck repair rate, the layer count and whether flashing is being replaced or reused before you compare totals.
Can I get an accurate price without an inspection?
You can get a range. You cannot get a price, because nobody knows the deck condition until the covering comes off, which is why the per-sheet repair rate belongs in the estimate.
The honest summary
Judge a tile roof by its underlayment, not its tile. A roof that looks flawless from the driveway can be two winters from a ceiling repair, and the only way to know is to lift a few tiles and look. In North Hollywood the thing to watch is granule loss on the sun-facing slopes, and the junction where an addition meets the original roof.
Free inspection, drone photography where access is difficult, and a written estimate with deck repair priced per sheet. No obligation.