Coastal Windows & Exteriors is a GAF Master Elite contractor serving 730+ towns across Massachusetts, New Hampshire and Maine with 7,000+ installations completed since 2011. To know when your shingles need replacing, look to age and visible wear.
Warning Signs Your Shingles Are Failing
- Age leads the list: A roof more than 20 years old with recurring issues should be evaluated by a professional. Repairs on an aging system often cost more than a fresh start.
- Curling and buckling show up first: Shingles that curl, buckle, or go missing signal a roof near the end of its life. Each storm then exposes your deck to water.
- Granules collect in gutters: Loose granules mean your asphalt shingles are wearing thin. Once that loss speeds up, the waterproofing layer fades fast.
- Daylight sneaks into the attic: Light through the attic ceiling points to gaps in the roof structure. That warning calls for prompt attention.
- Twice-yearly checks catch trouble early: Inspect your roof in spring and fall to spot small problems first. Early attention adds years to any roof.
The Smart Way to Time Your Replacement
Top Recommendation: Schedule a professional inspection once your roof crosses the 20-year mark.
Best for Budget: Address minor shingle wear early before it grows into full deck damage.
Best for Peace of Mind: Plan a full roof replacement ahead of the next hard winter.
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 My Shingles Need Replacing? See the areas we serve and talk to your local roofing contractor.
Last Updated: August 2026
Sources:
- A roof more than 20 years old with recurring issues should be evaluated for replacement. Coastal Windows & Exteriors GAF Residential Roofing FAQs, GAF guidance on roof lifespan and replacement thresholds. (2025)
- Homeowners should inspect their roof at least twice a year, in spring and fall. Coastal Windows & Exteriors GAF Residential Roofing FAQs, GAF guidance on inspection frequency and maintenance. (2025)
