Spray Foam Insulation cost: Chicago vs Rock Island (2026)
In 2026, spray foam insulation is about 20% more expensive in Chicago than in Rock Island. Most homeowners pay around $4,500 in Chicago versus $3,750 in Rock Island — a gap of roughly $750.
Chicago IL
Typically around $4,500
Rock Island IL
Lower costTypically around $3,750
Chicago vs Rock Island: full breakdown
| Factor | Chicago | Rock Island |
|---|---|---|
| Typical 2026 cost | $4,500 | $3,750 |
| Estimated range | $1,800–$7,150 | $1,500–$6,000 |
| Labor index (vs US) | ×1.12 | ×0.94 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.06 | ×1.06 |
| Local permit | None | None |
| Labor share | $2,500 | $2,050 |
| Materials/equipment | $2,000 | $1,700 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national spray foam insulation range for local labor, climate and permits.
Chicago vs Rock Island
Is spray foam insulation cheaper in Chicago or Rock Island?
In 2026, spray foam insulation is cheaper in Rock Island at about $3,750, versus $4,500 in Chicago — a difference of about $750 (20%).
Why does spray foam insulation cost more in Chicago than Rock Island?
The main driver is local labor rates: Chicago's labor index is 1.12 versus 0.94 in Rock Island. Climate zone (cold vs cold) also shift the total.
How much is spray foam insulation in Chicago, IL?
In Chicago, spray foam insulation typically runs $1,800–$7,150 in 2026, with most homeowners paying around $4,500.
Updated June 2026 · By Costadia Editorial