9 warning signs your LA roof is failing.
DIY visual inspection checklist for LA homeowners. Catch problems before they become $10K+ repairs. Plus the repair-vs-replace decision framework with 2026 LA pricing.
The 9 warning signs.
1. Curled, buckled, or cupping shingles
Shingle edges that lift up or bend backward indicate underlayment failure or material degradation. Common in LA after 15+ years of UV exposure. Once 5+ shingles curl, full replacement is the cheapest long-term option.
2. Missing shingles after wind events
Santa Ana winds regularly tear loose shingles in LA. Two or three missing shingles can be repaired ($300-$700 each visit). Once you’re losing shingles after every wind event, the entire roof’s adhesion has failed.
3. Granules accumulating in gutters
Asphalt shingles shed protective granules as they age. A handful in the gutter after a rainstorm is normal during the first 5 years. Cup-fulls of granules indicate accelerated failure — usually means 5-10 years remaining lifespan.
4. Moss, algae, or lichen growth
Moss/algae growth holds moisture against the shingle surface, accelerating degradation. Common on north-facing slopes in shaded LA neighborhoods (Pasadena tree-lined streets, Beverly Hills hilly areas). Treat early or replace.
5. Sagging roof line
Visible sag in the roof structure indicates rafter failure, water damage to decking, or excessive snow/debris load (rare in LA but possible in foothill areas). Structural issue — get inspected immediately.
6. Visible daylight through roof in attic
Climb into the attic in daytime. Any visible pinpricks of light through the roof = active leaks or imminent leaks. Water staining on rafters confirms past leak activity.
7. Interior ceiling stains
Brown water-staining rings on interior ceilings, even when seemingly small, indicate that water has already passed through the roof, underlayment, decking, and insulation. The visible stain is the LAST sign — there’s usually significant hidden damage.
8. Roof age 22+ years (asphalt) or 50+ years (tile underlayment)
Asphalt shingle roofs lose performance starting at year 18-20. Past 22, repair costs accumulate quickly. Tile roofs themselves last 50-75+ years but the underlayment beneath needs lift-and-relay every 25-35 years.
9. Flashing rust, damage, or separation
Metal flashing around chimneys, vents, skylights, and roof valleys is the #1 source of roof leaks. Inspect for rust, separation from the roof surface, or cracked sealant. Flashing repair is cheap; ignoring it leads to expensive interior water damage.
The repair-vs-replace framework.
| If your roof is… | And the repair cost is… | Then… |
|---|---|---|
| 0-10 years old | Under $1,500 | REPAIR |
| 11-18 years old | Under $1,500 | REPAIR (buy more time) |
| 11-18 years old | $1,500-$4,000 | Get full replacement quote — compare math |
| 11-18 years old | $4,000+ | REPLACE |
| 18-22 years old | Any cost | Compare replacement quote — usually REPLACE wins |
| 22+ years old | Any cost | REPLACE — don’t waste on repair |
When to call a pro.
- →You see 3+ warning signs from the list above
- →Active leak (interior staining or visible water)
- →Roof is 18+ years old (proactive assessment for budgeting)
- →Considering solar installation (need to know roof life vs solar life)
- →Insurance is non-renewing — fire zone homes need fire-rated documentation
HUS provides free roof inspections including drone-based aerial assessment, infrared moisture mapping, and 3D model generation for accurate replacement quotes.
Get a real assessment.
Drone aerial inspection + ground-level visual + interior attic check. We tell you exactly what’s wrong and what your real options are.
