2025 Cost Breakdown by Type
Prices reflect installed costs from licensed NJ contractors in Middlesex, Monmouth, and Ocean County. Material costs and contractor availability affect final pricing.
| Service / Item | Low | Avg (NJ) | High |
|---|---|---|---|
| Epoxy coating (1-2 car garage) | $1,500 | $2,800 | $4,500 |
| Polyurea / polyaspartic (1-2 car) | $2,500 | $4,000 | $6,500 |
| Metallic epoxy (decorative) | $3,500 | $5,500 | $8,000 |
| Commercial floor (per sq ft) | $4/sq ft | $7/sq ft | $12/sq ft |
| Crack repair before coating | $300 | $600 | $1,200 |
What Affects the Cost in NJ?
These are the key factors that will determine your actual project cost in Central NJ.
Garage Size
A 1-car garage is ~240 sq ft; 2-car is ~480 sq ft; 3-car is ~720 sq ft. Larger floors get per-foot discounts on most jobs.
Coating System
Epoxy is popular but yellows with UV exposure (not ideal for NJ garages with sunlight). Polyurea cures in hours and is UV-stable. Polyaspartic is the top choice for durability.
Surface Prep
Shot blasting or diamond grinding is required for a lasting bond — never skip this. Surface prep is often 30–40% of total labor cost and determines how long the floor lasts.
Moisture Issues
NJ garages on slabs over soil can have moisture vapor emission that prevents proper adhesion. A moisture test is essential — some floors need a vapor barrier primer first.
Decorative Options
Color flake broadcast is standard ($0.50–$1/sq ft extra). Metallic finishes cost more but look stunning. Custom patterns and logos add $200–$800.
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