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How Much Does Roof Repair Cost? (Real Math)
The math
Roof area × rate by job type = budget. Minor repairs run ~$4/sq ft, partial sections ~$8, full replacement ~$14. A 1,500 sq ft roof: minor $4,800–$7,200, partial $9,600–$14,400, full $16,800–$25,200. Run your size in our Roof Repair Estimator.
Repair or replace?
- Under 20% damaged + roof under 15 years: repair
- Curling, bald shingles, or two layers already: replace
- Active leak into decking: replace that section minimum
- Storm damage: call insurance before any contractor
Getting quotes right
Get 3 itemized quotes listing shingle brand, underlayment, flashing scope, and disposal. Never pay over 10% deposit. Check license and local references — storm chasers flood neighborhoods after hail with cheap bids and no warranty.
Cost reality
Architectural shingles last 20–30 years; 3-tab 12–15. Metal costs 2× upfront but outlives two shingle roofs. Gutter and fascia work often hides in quotes — ask explicitly.
Limits
Online estimates cannot see decking rot or flashing failures — treat them as planning ranges only. Steep, cut-up roofs cost 20–40% more in labor. See roofing guides.
Warning signs by urgency
Act this week: active drips, daylight through boards, sagging sections. Act this month: missing shingle patches, granule piles in gutters, flashing gaps. Watch yearly: moss, minor curling on south slopes. Water travels — stains on ceilings often start 10 ft uphill from the entry point.
Insurance angle
Sudden storm damage is usually covered; wear and neglect never are. Document with dated photos before temporary tarping, file within days, and get an adjuster inspection before signing any contractor contingency agreement. Public adjusters take 10% — worth it only on large disputed claims.
FAQ
- Overlay or tear-off? One overlay max, and never over two layers — tear-off reveals decking issues.
- Best season? Late spring through early fall; shingles seal poorly below 40°F.
- Warranty real? Manufacturer covers defects, contractor covers workmanship — get both in writing.
One last rule: photograph the roof from the ground every spring with a date stamp. Insurers and warranty claims move twice as fast with consecutive yearly photos, and you will spot new damage early instead of discovering it as a ceiling stain.
Budget buffer tip: hold 15% contingency in reserve and release it only for genuine surprises like rotted decking — never for shingle color upgrades. Contractors who demand the contingency upfront are spending your safety net before the first shingle lifts.
Keep all warranties, permits, and the final invoice in one folder — future buyers pay premiums for documented roof history.