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How Much Does Spray Foam Insulation Cost in Naples, FL (2026 Guide)
Ideal Insulation
If you're a Naples homeowner watching your FPL bill climb past $300 every summer, you've probably looked into spray foam insulation. The first question is always: how much is this going to cost me?
Spray Foam Insulation Pricing in Naples, FL (2026)
| Type | Cost Per Sq Ft | Typical Attic (1,500 sq ft) | R-Value Per Inch |
|---|---|---|---|
| Open Cell Spray Foam | $1.00-$2.00 | $1,500-$3,000 | R-3.7 |
| Closed Cell Spray Foam | $2.00-$4.00 | $3,000-$6,000 | R-6.5 |
| Blown-In Fiberglass | $0.50-$1.25 | $750-$1,875 | R-2.5 |
| Fiberglass Batts | $0.30-$1.00 | $450-$1,500 | R-3.1 |
These are real contractor prices for Southwest Florida in 2026.
What Determines Your Final Price?
Square Footage and Thickness
Florida's energy code requires minimum R-values: Attic/roof deck R-30, exterior walls R-13, crawl spaces R-19. For attics, we typically apply 5-6 inches of open cell or 3-4 inches of closed cell to the underside of the roof deck.
Open Cell vs. Closed Cell
Open cell ($1-2/sq ft) expands to fill cavities, provides soundproofing, and creates an air seal. Go-to for attics and interior walls.
Closed cell ($2-4/sq ft) is denser, provides a moisture AND air barrier, adds structural rigidity. Recommended for crawl spaces, coastal homes, flood zones, and garages.
Accessibility
Open attics are straightforward. Cathedral ceilings or tight crawl spaces cost more. If we need to remove old insulation first, add $1-2/sq ft.
What Spray Foam Saves You
| Before | After | |
|---|---|---|
| Monthly FPL (summer) | $350-450 | $210-300 |
| Monthly FPL (winter) | $150-200 | $100-140 |
| Annual cost | $3,000-3,900 | $1,860-2,640 |
We guarantee minimum 30% electric bill reduction. Most see 30-40%.
Payback Calculation
- Attic spray foam (1,500 sq ft, open cell): $2,250
- FPL rebate: $220
- Net cost after rebate: $2,030
- Annual energy savings: $1,100
- Payback: under 2 years
FPL Rebate: $220 Instant Savings
As an FPL Preferred Contractor, we handle all paperwork. An instant $220 rebate on ceiling insulation through the FPL PIC program. Get Your Free Energy Audit →
Spray Foam vs. Cheaper Alternatives in Florida
- Humidity control — Fiberglass doesn't stop moisture. In 80-90% humidity, moisture soaks fiberglass and breeds mold. Spray foam seals it out.
- Air sealing — Air moves right through fiberglass. With 80°F+ temperature differentials in your attic, air infiltration destroys energy efficiency.
- Hurricane resilience — Closed cell increases roof deck wind resistance by up to 300%.
- Lifespan — Fiberglass degrades in 10-15 years. Spray foam lasts 20+.
Full comparison: Spray Foam vs Fiberglass vs Blown-In →
What to Watch Out For
- What type and brand of foam? Quality differences exist.
- What thickness? 2 inches is cheaper than 4 but may not meet code.
- Is removal included? Don't spray over degraded insulation.
- Licensed and insured? Check Florida DBPR.
- FPL rebate paperwork? If not, you're leaving $220 on the table.
Get Your Exact Price
Every home is different. Our free thermal leak scan maps exactly where your home loses energy and gives you a detailed quote with all options.
Schedule Your Free Energy Audit →
We can usually get to your Naples, Bonita Springs, or Fort Myers home within 24 hours.
