When to Repair vs Replace Your Roof

Is your roof telling you it needs work? The big question: should you repair or replace? This guide helps you make the right financial decision.

The Quick Answer

Repair if: Your roof is under 15 years old with isolated, fixable issues.

Replace if: Your roof is past 20 years, has widespread problems, or repairs would exceed 30% of replacement cost.

Factors That Favor Repair

Roof Age

Younger roofs justify investment:

• Under 10 years: Almost always repair
• 10-15 years: Repair makes sense for isolated issues
• 15-20 years: Evaluate case by case
• Over 20 years: Replacement often better value

Localized Damage

Damage confined to one area suggests repair:

• Storm damage to one slope
• Single leaking penetration
• Isolated flashing failure
• Small section of missing shingles

Minor Wear

Normal aging signs are repairable:

• A few cracked or curling shingles
• Minor granule loss
• Small areas of moss or algae
• Isolated nail pops

Factors That Favor Replacement

Widespread Problems

When issues affect the entire roof:

• Shingles curling or buckling everywhere
• Extensive granule loss
• Multiple simultaneous leaks
• Daylight visible through roof boards

Underlayment Failure

On tile roofs, the underlayment is critical:

• Tiles may be fine but underlayment failed
• Re-roofing requires tile removal anyway
• Usually more cost-effective to replace everything

Structural Issues

When the deck is compromised:

• Soft spots when walking on roof
• Sagging visible from ground
• Extensive water damage to sheathing
• These require more than surface repairs

The 30% Rule

If repair costs exceed 30% of replacement cost, replacement usually makes more sense:

• You get a completely new system
• New warranty coverage
• No recurring repairs
• Better energy efficiency

Cost Comparison Example

Typical Lake County scenario:

• Roof replacement: $15,000-$25,000
• 30% threshold: $4,500-$7,500
• If repairs approach that threshold, consider replacement

Insurance Considerations

Your insurance situation affects the decision:

• Storm damage may be covered for repair or replacement
• Insurers may require replacement of roofs over 15-20 years
• Document everything for claims
• See our insurance claim tips

Getting an Honest Assessment

Beware of contractors who always push replacement—or always push repair. A reputable contractor evaluates each roof individually.

We offer free inspections with honest recommendations. Sometimes we tell homeowners to wait and monitor. Sometimes we recommend acting now. Contact us for an unbiased assessment.