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Parking Lot Seal Coat Payback Calculator
Seal coating extends asphalt life and curb appeal; cycle cost vs full reseal economics.
Annualized savings
-$776
Seal cost / cycle
$17,600
Resurface cost
$240,000
How the math works
Savings = (resurface / base life − resurface / coat life) − (seal / cycle).
($240k / 15 − $240k / 22) − ($17.6k / 3) = $16k − $10.9k − $5.87k = −$700 (close to break-even).
How to Use
- Enter sqft of asphalt.
- Enter seal coat cost per sqft.
- Enter cycle years.
- Enter full resurface cost per sqft.
- Enter life extension without coat / with coat.
- Read annualized cost savings.
Frequently Asked Questions
Why seal coat?
Seal coat protects asphalt from UV, water penetration, oil stains. Applied every 2-4 years. Typical cost: $0.15-0.35/sqft. Extends asphalt life from ~15 years to ~22 years (40-50% life extension). Appearance refresh: restores black color, improves curb appeal. Typically includes crack filling (+$0.05-0.15/sqft). Full asphalt replacement: $2-5/sqft (overlay) or $5-12/sqft (full reconstruction).
Best schedule?
New asphalt: wait 12-18 months to cure, then first seal. Seal coat every 2-4 years thereafter. Heavy-use lots (retail, shopping center): every 2 years. Light-use lots (residential, office): every 3-4 years. Crack filling in years between seal coats: $0.05-0.10/sqft. Full resurface (overlay): every 10-15 years if maintaining well; 7-10 years without seal coat.
Material options?
Coal tar sealant: traditional, best oil resistance, limited in some states (environmental concerns). Asphalt emulsion (AE): most common now, eco-friendly, similar durability. Polymer-modified AE: premium, better durability. Fast-dry sealant: 2-4 hour cure vs 24-hour traditional. Cost: tar $0.15-0.25/sqft, AE $0.18-0.30/sqft, polymer $0.22-0.35/sqft.
Operational considerations?
Application window: 50-90°F ambient temperature. Rain avoidance: 24 hours before + after. Curing time: 24-72 hours. Parking lot closed during application. Overnight application common. Resident notification 7-14 days ahead. Alternative parking arrangements required. Striping touched up same visit: $0.05-0.15/sqft for lines. ADA stalls repainted: $50-100 per stall.
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