Direct Answer
The 25-30 rule:
- If damage exceeds 25% of total roof area: replace
- If roof is 18+ years old AND repair cost exceeds 30% of replacement cost: replace
- Otherwise: repair
The Decision Tree
Walk top-to-bottom:
Repair vs Replace MA Roof
- Roof age > 22 years (asphalt) OR > 30 years (3-tab): REPLACE. Past design life. Repairs throw good money after bad.
- Storm damage exceeds 25% of roof area: REPLACE. Insurance claim covers most or all. Filing repair claim on extensive damage triggers adjuster downgrade.
- Active leak in 15+ year asphalt roof AND multiple known weak points: REPLACE. Cost-effective vs piecemeal repair.
- Isolated damage (single shingle area, single chimney flashing, single skylight): REPAIR. Address the specific issue + monitor for next 5 years.
- Roof age 8-15 years AND damage isolated: REPAIR. Significant remaining lifespan justifies repair investment.
Frequently Asked Questions
How do I know my roof's age?
Check homeowner records, prior inspector reports, building permits filed at city. Visual estimation: granule loss, moss/algae growth, curling shingles indicate 15+ years. Pro Build's free inspection includes roof age assessment.
What's the average MA asphalt shingle lifespan?
Architectural shingles: 22-26 years (vs 30-year manufacturer warranty rated for milder climates). 3-tab shingles: 15-20 years. Designer/luxury shingles: 28-35 years.
References & Sources
- GAF Roofing — warranty + lifespan. https://www.gaf.com/
- Insurance Information Institute roof claims data. https://www.iii.org/
