The short version
In short: Most leaks on a tile roof come from worn-out underlayment, not broken tile. If the tile is still sound, a lift and relay removes it, replaces the underlayment and flashing, and puts the same tile back. If many tiles are cracked or the profile can’t be matched, new tile makes more sense. In Calabasas and most nearby cities, either job needs a reroof permit and inspections.
Tile isn’t the waterproofing
Tile sheds most of the rain. The underlayment beneath it is what keeps water out of the house.
Underlayment wears out first
Heat and age dry out older felt underlayment long before sound tile fails.
Lift and relay keeps your tile
The tile comes off, everything underneath is renewed, and your tile goes back on.
It’s a permitted reroof
In Calabasas and most nearby cities, a lift and relay needs a reroof permit and inspections.
Why tile roofs leak when the tile looks fine
Some water always gets past tile: through the laps between pieces, under the edges in wind-driven rain, and around chimneys, skylights, and valleys. The underlayment is designed to catch that water and carry it down to the eaves.
Older felt underlayment dries out, cracks, and tears at nail holes, especially along valleys, eaves, and roof-to-wall joints. Once it fails, water reaches the roof deck and shows up as a ceiling stain, even though every tile looks intact from the street. We see this often on tile roofs from the 1970s and 1980s in Calabasas, West Hills, Oak Park, and Westlake Village.
Signs the underlayment is failing
- Ceiling stains or drips under a roof with no visibly broken tile
- Leaks that appear only in heavy or wind-driven rain
- Brittle, cracked, or torn felt visible at the eaves, ridge, or under a broken tile
- Soft or stained sheathing and fascia along the roof edge
- Slipped tiles and leaks that keep returning after spot repairs
A roof inspection confirms it: we lift a few tiles in the problem areas and photograph what’s underneath.
What a lift and relay includes
- Inspection and photos.We check the tile’s condition and whether matching replacement tile is still available for the pieces that break.
- Permit.We pull the reroof permit and schedule the required inspections, including the roof deck or nailing inspection.
- Remove and stack the tile.Sound tile is lifted and stacked on the roof or on the ground. Broken pieces are set aside.
- Check the deck.We inspect the sheathing and replace damaged sections, with photos of everything we replace.
- New underlayment and flashing.New underlayment is installed as part of a listed Class A assembly, along with new valley metal, flashing at walls and penetrations, and eave closures.
- Relay the tile.Your tile goes back on, fastened to current requirements, with broken pieces replaced by the closest available match.
- Final inspection.The city inspector signs off, and you get photos of the work hidden under the tile.
When new tile makes more sense
- Many tiles are cracked, spalled, or brittle enough to break when handled
- The tile profile is discontinued and replacements can’t be matched
- You want a different color or profile (in Calabasas, a color change can require a Zoning Clearance, and many HOAs require approval)
- You’re switching to a different roofing material altogether
If the new tile weighs more than 7 pounds per square foot, or more than your existing roof, the City of Calabasas may require structural calculations from a licensed engineer or architect. We flag that during the estimate. See our roof replacement service for full reroofs, and our repair or replace guide for other roof types.
Local rules to know
Calabasas: a lift and relay is a reroof. It needs a permit before work begins, a Class A roof assembly, and a roof deck or nailing inspection plus a final. Our Calabasas roof permit guide covers the details.
City of Los Angeles neighborhoods such as Woodland Hills and Encino: permits come from LADBS. The city’s cool-roof rule applies to many residential reroofs, but LADBS does not require cool-roof compliance for a tile lift and relay. We confirm what applies to your home.
HOA communities: because your existing tile goes back on, a lift and relay keeps the approved color and profile, which usually makes HOA approval simpler.
Leaking right now?
Call (818) 351-2918. We can tarp or make a temporary repair first. See roof repair and emergency roof repair.
Frequently asked questions
How long does a lift and relay take?
Most homes take several days to two weeks, depending on roof size, weather, and inspection scheduling. Your proposal includes a schedule for your project.
Will some of my tiles break?
A few usually do, especially on older clay tile. We replace broken pieces with the closest available match and can move salvaged tile from less visible areas to the front of the house.
Can you replace the underlayment only where it leaks?
Sometimes. If the damage is limited to one area and the rest of the underlayment is sound, a section repair can work. If the underlayment is aged across the whole roof, a full lift and relay lasts much longer.
Sources
City of Calabasas Building & Safety, “Roof Repair, Replacement & Covering” handout (revised January 2026); Los Angeles Department of Building and Safety, express permit bulletin. Requirements change, so we confirm current rules on every project. This guide is general information, not engineering advice.