Repair or Replace? How to Know What Your Roof Actually Needs

When Repair Makes Sense

• Age under 15 years — plenty of life left
• Damage limited to one area — a fallen branch or isolated leak
• Less than 30% of surface affected — beyond this, replacement math wins
• Single leak point — flashing failure around chimney or vent boot

Most minor NJ repairs cost $300-$1,500. Moderate repairs run $1,500-$4,000.

When Replacement Is Right

• Age 20+ years (asphalt) — underlying materials likely degraded even if it looks okay
• Widespread granule loss — protective layer is gone
• Multiple leaks in different areas — systemic failure
• Shingles curling/buckling across the roof — UV and thermal damage
• Repair costs exceeding $4,000 — better value from full replacement with warranty
• Selling your home — new roof adds $15,000-$25,000 in value

The 15-Year / 30% Rule

If your roof is over 15 years old AND more than 30% needs work, replacement almost always makes better financial sense. Full warranty, better efficiency, no compounding repair costs.