Tile roofing is one of the defining architectural features of San Diego. Clay and concrete tile roofs appear throughout Mission Hills, Bankers Hill, Clairemont, Chula Vista, and nearly every neighborhood with homes built before 1980. For homeowners considering tile — whether a first installation or a full re-roof — this guide covers what the installation process involves, what it costs, and what to expect.
Why Tile Works in San Diego
San Diego's Mediterranean climate is nearly ideal for tile roofing:
UV stability. Clay and concrete are inert materials. Unlike asphalt, they don't degrade from UV radiation. A tile that's 30 years old still has the same UV resistance it did when installed.
Fire resistance. Both clay and concrete tile are naturally Class A fire rated — the highest classification. In San Diego's fire-prone hillside and canyon communities, this is a meaningful advantage.
Thermal mass. Tile roofs absorb heat during the day and release it gradually, moderating attic temperature fluctuations. This reduces HVAC loads in San Diego's climate.
Longevity. Concrete tile lasts 30-50 years. Clay tile lasts 50-100+ years. The tile itself rarely fails — the limiting factor is the underlayment beneath it.
Aesthetics. Tile is architecturally appropriate for Spanish Colonial, Mediterranean, Mission, and Tuscan styles — the dominant architecture across large sections of San Diego County.
Clay vs. Concrete Tile
Clay tile:
- Longer lifespan (50-100+ years for the tile)
- Better color stability (doesn't absorb moisture, colors don't fade as quickly)
- Higher installed cost
- Lighter weight than concrete
- Traditional aesthetic
Concrete tile:
- Lower cost than clay (roughly 20-30% less per square)
- Absorbs more moisture over time — periodic sealing extends life
- Heavier than clay, but still within most structural limits
- Available in profiles that closely replicate clay tile appearance
- 30-50 year lifespan for the tile
For most San Diego homeowners, concrete tile provides excellent performance at a lower cost. Clay is appropriate for premium projects, historic neighborhoods, or when matching existing clay tile.
The Underlayment Factor
This is the most important technical point about tile roofing: the tile itself rarely fails — the underlayment beneath it does.
Underlayment is the secondary waterproofing layer between the tile and the deck. On most San Diego tile roofs installed in the 1980s-2000s, the underlayment is 15-30 lb felt — and it has a lifespan of 20-30 years.
A tile roof that's 25-30 years old and leaking usually has intact, functional tile and failed underlayment. The correct repair is a full underlayment replacement — tear off the tile, replace the underlayment, and reinstall the tile.
Modern high-quality synthetic underlayments (like GAF Tiger Paw or CertainTeed DiamondDeck) have projected lifespans of 30-50 years, significantly outlasting felt.
The Installation Process
Full tile re-roof (replacement):
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Remove existing tile. Tile is carefully removed and sorted — reusable tile can often be reinstalled, saving material cost.
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Remove old underlayment. All old felt or synthetic underlayment is stripped from the deck.
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Inspect and repair the deck. Any rotted, soft, or damaged decking is replaced.
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Install new underlayment. Modern tile installations typically use a self-adhering base layer (like Underlayment SA) plus a field underlayment. In San Diego's climate, high-quality synthetic underlayment is strongly preferred over felt for longevity.
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Install battens (if applicable). Many tile installations use horizontal wood battens that the tile hangs on. Some modern installations use direct-to-deck systems.
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Install tile. Starting at the eave, tile is installed in overlapping courses working up the slope. Ridge and hip tile is set in mortar or with approved mechanical fasteners.
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Set ridge and hip tile. Traditionally set in mortar; increasingly done with foam or mechanical systems. Mortar is durable but can crack over time and is the most common maintenance item on older tile roofs.
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Final inspection and cleanup.
New tile installation on a prepared deck: Similar process, beginning at Step 4.
Cost of Tile Roof Installation in San Diego (2025-2026)
| Scope | Estimated Cost |
|---|---|
| Concrete tile re-roof, 1,500 sq ft | $14,000–$22,000 |
| Concrete tile re-roof, 2,000 sq ft | $18,000–$28,000 |
| Clay tile re-roof, 2,000 sq ft | $25,000–$40,000 |
| Underlayment replacement only (tile reinstalled), 2,000 sq ft | $12,000–$22,000 |
| Ridge tile re-bed (mortar repair), 50 LF | $800–$1,800 |
Costs vary based on roof complexity, pitch, story count, and whether existing tile is being reinstalled or replaced.
Structural Considerations
Tile is significantly heavier than asphalt shingles. Before installing tile on a home originally built for shingles, a structural assessment is needed to verify the framing can support the additional load. This is particularly relevant for homes in East County developments built in the 1970s-1980s that originally had shingle roofs.
Most San Diego homes built for tile have adequate structural capacity. Converting from shingles to tile may require additional framing — a structural engineer's input is advisable.
Service Areas
We install and repair tile roofs throughout San Diego County, including San Diego, Chula Vista, El Cajon, La Mesa, Santee, Lakeside, Spring Valley, Lemon Grove, National City, and more.
Get a Tile Roof Estimate
Call (619) 330-8185 or visit our contact page for a free estimate. We'll assess your current tile and underlayment condition and give you an honest recommendation. GAF Master Elite certified, C-39 licensed, serving San Diego County since 1999.
