The decision between tile roof repair and replacement depends on the condition of the underlying waterproofing underlayment. Because clay and concrete tiles can last 50+ years while underlayment lasts 20 to 25 years, homeowners rarely need to buy new tiles. Instead, a 'Tile Lift and Reset' preserves your existing tiles, replaces the degraded underlayment and rotten battens, and saves up to 40-50% compared to purchasing new tile.
Key Technical Takeaways
- Tile roofs leak because underlayment dries out and tears, not because tiles wear out.
- A Tile Lift and Reset salvages 90-95% of your existing clay or concrete tiles.
- Repair is appropriate for isolated cracked tiles, broken mortar hips, or localized valley leaf dams.
- Complete replacement with new tile is only necessary if existing tiles are discontinued, severely spalling, or brittle.
How a Tile Roof Actually Works: The Two-Part System
Many homeowners mistakenly believe their Spanish barrel or concrete flat shake tiles are the waterproof barrier of their home. In reality, tile roofs are "water shedding" assemblies. Rainwater passes between tile laps into the cavity underneath. The real waterproof seal is the underlayment underneath. The tiles serve to protect this underlayment from direct solar UV radiation, hail impact, and foot traffic.
What Is a Tile Lift and Reset?
A Tile Lift and Reset (also called a R&R - Remove and Reinstall) is the gold standard for restoring aging tile roofs in Southern California: 1) Technicians carefully remove existing tiles and stack them on the roof ridge or lawn, 2) All old, brittle felt paper is torn off and discarded, 3) Damaged plywood decking and rotten wood battens are replaced, 4) Two layers of high-temperature synthetic underlayment or self-adhering SBS modified bitumen are installed, 5) New 26-gauge pre-painted valley metal and flashings are installed, and 6) The original tiles are reinstalled with code-compliant mechanical fasteners and new mortar bird-stops.
When Is Simple Tile Repair the Right Choice?
If your tile roof is under 15 years old and you have a localized leak around a bathroom plumbing vent pipe or an isolated cracked tile caused by a tree branch, you do not need a lift and reset. A skilled C-39 craftsman can lift adjacent tiles, install a new lead or rubber pipe flashing boot, slide in a matching replacement tile, and re-anchor the assembly within hours.
- Never walk in the center of Spanish clay "C" tiles; walking on the middle collapses the arch and shatters the tile.
- Always step on the lower third of concrete tiles where the underlying wood batten provides structural support.
Repair vs. Replace Decision Matrix
- •Damage is limited to fewer than 10-15 cracked or displaced individual tiles.
- •Underlayment in the attic is still soft, pliable, and black (not brittle or powdery).
- •Leak occurred around a specific penetration (skylight or vent pipe).
- •The tile roof is 20-30+ years old and multiple leaks are appearing in different rooms.
- •Underlayment has turned brittle and crumbles to powder when touched in the attic.
- •Battens have rotted out from chronic moisture retention under tiles.
Frequently Asked Questions
How much money does a Tile Lift and Reset save compared to new tile?
Reusing your existing tiles saves between $8,000 and $16,000 in material purchase and disposal dumpster fees on an average 2,500 sq ft home.
What happens if a few tiles break during the lift and reset process?
Experienced roofers anticipate 3-5% breakage. APR Roofing maintains inventory of discontinued and vintage concrete and clay tiles to replace broken pieces seamlessly.
Need Professional Assistance With Your Roof?
Our 100% in-house trained crews provide certified leak diagnostics, storm inspections, and permanent repairs across Lancaster, Palmdale, Santa Clarita, and Gardena.