How Do You Know When It’s Time to Replace Your Asphalt Shingle Roof?
Your roof is one of the most important parts of your home, protecting it from heat, storms, and wind damage. But over time, asphalt shingles wear out, especially in Arizona’s harsh climate.
If you live in Sedona, Prescott, Cottonwood, or Camp Verde, knowing when to repair minor damage versus replace your entire roof can save you thousands in preventable repairs.
This guide covers the most common signs that your asphalt shingle roof needs attention and how to determine if repairs or a full replacement are the best option.
Top Signs Your Asphalt Shingle Roof Needs Attention
1. Your Roof is Over 15-25 Years Old
- Asphalt shingles typically last 15-30 years, but Arizona’s intense heat and UV exposure can shorten that lifespan.
- If your roof is over 15 years old, it’s time for a professional inspection to check for aging signs.
- South-facing roofs wear out faster due to direct sun exposure.
For more on shingle lifespan, visit: How Long Do Asphalt Shingles Last in Arizona?
2. Cracked, Curling, or Buckling Shingles
What Happens?
- Extreme heat and thermal expansion cause shingles to curl, crack, or buckle over time.
- Curled or buckled shingles create gaps where wind and water can seep in.
- Cracked shingles are more vulnerable to monsoon winds and hail damage.
Repair or Replace?
✅ If only a few shingles are affected, repairs can extend your roof’s life.
❌ If a large portion of your roof has curling or cracking shingles, a replacement is needed.
For replacement costs, visit: How Much Does an Asphalt Shingle Roof Cost?
3. Granule Loss & Bald Spots on Shingles
What Happens?
- Asphalt shingles are covered with protective granules that shield them from UV rays and heat damage.
- Over time, granules wear off, exposing asphalt to direct sunlight and moisture.
- Granule loss leads to bald spots, faster deterioration, and leaks.
How to Check for Granule Loss:
✅ Look in your gutters for excess granules (they look like sand).
✅ Check your shingles for discoloration or bald patches.
Repair or Replace?
✅ Minor granule loss can be repaired with protective roof coatings.
❌ Widespread bald spots mean it’s time for a roof replacement.
For shingle durability, visit: Best Asphalt Shingles for Arizona Homes
4. Missing or Loose Shingles After Storms
What Happens?
- Arizona’s monsoon winds can lift and tear shingles off, exposing the underlayment.
- Loose or missing shingles increase the risk of leaks and structural damage.
- If shingles aren’t properly nailed down, they can blow off easily in high winds.
Repair or Replace?
✅ If only a few shingles are missing, replacing them can restore roof protection.
❌ If multiple areas have missing shingles, your roof may be nearing the end of its lifespan.
For wind-resistant shingles, visit: Asphalt Shingles vs. Metal Roofing: Which is More Durable?
5. Frequent Roof Leaks & Water Damage
What Happens?
- Small leaks can quickly turn into major water damage.
- Leaks often occur near chimneys, vents, and skylights.
- Water stains on ceilings and walls indicate roof damage.
Repair or Replace?
✅ A small, isolated leak can be repaired with new flashing and sealants.
❌ Multiple leaks or widespread water damage likely require a full roof replacement.
For signs of roof damage, visit: Common Asphalt Shingle Problems in Arizona & How to Prevent Them
6. Moss, Algae, or Mold Growth
What Happens?
- Moisture buildup can lead to moss, algae, and mold growing on shingles.
- Algae stains make shingles look dirty and accelerate breakdown.
- Moss can trap water, leading to roof rot and shingle deterioration.
Repair or Replace?
✅ Cleaning algae or moss early can prevent long-term damage.
❌ If mold or rot has spread beneath shingles, a full roof replacement may be necessary.
For roof cleaning tips, visit: How to Maintain an Asphalt Shingle Roof
Repair vs. Replace: How to Make the Right Choice
| Roof Condition | Best Option |
| Minor curling or cracking on a few shingles | Repair |
| Small leaks in isolated areas | Repair |
| 10-15 missing shingles after a storm | Repair |
| Widespread curling, cracking, or granule loss | Replace |
| Multiple leaks and water stains inside the home | Replace |
| Roof is 20+ years old and showing significant wear | Replace |
Cost Considerations for Repairs vs. Replacement
- Minor repairs (fixing a few shingles, patching leaks): $200 – $1,000
- Larger repairs (fixing multiple damaged areas, replacing flashing): $1,000 – $3,500
- Full asphalt shingle roof replacement: $7,000 – $20,000
For full cost details, visit: How Much Does an Asphalt Shingle Roof Cost?
How to Prevent Costly Roof Repairs
✔ Get a roof inspection every 1-2 years to catch early signs of damage.
✔ Keep gutters clean to prevent water backup and leaks.
✔ Replace missing shingles immediately after storms.
✔ Trim tree branches to prevent debris from damaging shingles.
✔ Consider upgrading to architectural or luxury shingles for better durability.
For shingle upgrade options, visit: Best Asphalt Shingles for Arizona Homes
Final Thoughts: When to Call a Roofing Professional
If your roof is showing multiple signs of wear, it’s best to get a professional inspection to determine whether repairs or a full replacement is the best solution.
✔ If your roof is under 15 years old, minor repairs can help extend its life.
❌ If your roof is over 20 years old and has widespread damage, replacement is the best long-term investment.
Next Steps: Get a Professional Roof Inspection in Arizona
Not sure whether you need a roof repair or replacement? Schedule a roof inspection with a trusted Arizona roofing contractor today.
For further reading, explore:
- How Long Do Asphalt Shingles Last in Arizona?
- How to Maintain an Asphalt Shingle Roof?
- How Much Does an Asphalt Shingle Roof Cost?
For additional industry insights, check out:
- National Roofing Contractors Association – Shingle Performance Guide
- Energy.gov – Cool Roofing Technologies