How do I know when asphalt shingles need to be replaced?

Written By: Stephanie Vanderbilt, Owner

Reviewed By: Coastal Windows & Exteriors

Last updated: July 17, 2026

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How do I know when asphalt shingles need to be replaced?

Watch for curling, cracking, missing shingles, and a roof age beyond 20 years.

A roofing contractor can confirm the signs with a quick inspection. Catching them early keeps a small fix from becoming a major one.

What Homeowners Need to Know:

Age signal: Once shingles pass the 20-year mark or show recurring damage, plan for replacement with a professional.
Seasonal inspections: Check the roof in spring and fall, the cadence manufacturers recommend, to spot failing shingles early.
Ice dam clues: After ice dams, removal alone can run up to $4,000, and lingering moisture often hides shingle damage beneath.
Cost of delay: Emergency leak repair can cost up to twice as much as standard repair once shingles let water through.
Visual cues: Bald spots, granule loss, and lifted edges all mean the shingle surface is breaking down.

Request a free roofing estimate from Coastal Windows & Exteriors.

Browse our complete roofing FAQ guide from Coastal Windows & Exteriors.

Explore the Coastal Windows & Exteriors Roofing Exterior Remodeling Home Improvement Help Center.

Still have questions about how do I know when asphalt shingles need to be replaced? See the areas we serve and talk to your local roofing contractor.

Last Updated: July 2026

If a roof is more than 20 years old or has extensive or recurring damage, consult a roofing professional about replacing it. GAF Residential Roofing FAQs GAF’s guidance on roof age and shingle replacement. (2025)
Ice dam removal can cost up to $4,000. Angi Ice Dam Removal Cost Guide Cost ranges for ice dam removal and related roof repairs. (2025)
Emergency roof leak repair can cost up to twice as much as a standard roof repair. This Old House Emergency Roof Leak Repair Guidance on emergency leak repair costs versus standard repair. (2025)

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How do I know when asphalt shingles need to be replaced?

How do I know when asphalt shingles need to be replaced?

What Homeowners Need to Know:

Where We Work

Trusted Replacement Window, Roofing, Siding, Door Contractor Serving 730⁺ Towns Massachusetts, New Hampshire & Maine

Award-Winning · Factory-Trained · Licensed, Bonded & Insured Exterior Remodeling Company