Spray foam insulation costs $2.00 to $5.50 per square foot of surface area installed, depending on the project size, conditions, location, and whether it is open-cell or closed-cell foam.
| Square feet | Average installed cost |
|---|---|
| 100 | $200 – $550 |
| 200 | $400 – $1100 |
| 300 | $600 – $1,650 |
| 400 | $800 – $2,200 |
Spray Foam Insulation Cost in Florida
For spray foam insulation near me in Florida, costs range from $2.00 to $5.40 per square foot installed in 2025, depending on foam type, thickness, and project size. A typical 1,000-square-foot attic might cost $2,000-$5,400, reflecting rising material and labor expenses. Here’s the breakdown:
- Foam Type: Open-cell foam runs $0.72-$1.56 per board foot (R-3.5/inch); closed-cell is $1.56-$3.48 per board foot (R-6.5/inch).
- Area Size: A 500-square-foot garage might cost $1,000-$2,700; a 2,000-square-foot home could hit $4,000-$10,800.
- Thickness: 2-6 inches is standard, with thicker layers boosting R-value and cost.
- Labor: Florida’s foam insulation contractors Florida charge $0.50-$1.50 per square foot, about 30-50% of the total.
- Prep: Wall injection or attic sealing adds $1-$3 per square foot if needed.
Use our spray foam cost calculator below for a quick estimate, or contact us for a custom report!
Spray foam insulation in existing walls cost
Installing spray foam insulation in existing walls costs $3,700 to $9,500 on average, depending on the project size. Installers spray slow-rising “injection foam” through holes drilled in the drywall or siding to fill the existing stud cavities.
- Closed-cell injection foam adds strength to the walls.
- Open-cell injection foam is better for sound dampening.
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- Residential Insulation
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Attic spray foam insulation cost
Attic spray foam insulation costs $1,500 to $7,800+ on average for the floor, depending on the foam type and R-value. Attic insulation companies recommended open-cell foam in vented attics to fill floor nooks and crannies, but it may require a vapor barrier in cold climates.
| Location | Average cost installed |
|---|---|
| Attic floor | $1,500 – $7,800 |
| Attic rafters / roof deck | $1,900 – $10,000 |
Cost to spray foam insulate a garage
Spray foam insulation enhances a garage’s energy efficiency by reducing heat loss and moisture buildup. Insulating a garage door costs between $300 and $500, while fully insulating all walls ranges from $2,900 to $9,800, depending on the garage size and foam type. Closed-cell spray foam is best for unfinished garage walls, offering superior insulation and moisture resistance. Open-cell foam, which is softer and more cost-effective, is ideal for finished walls. Proper insulation helps maintain comfortable temperatures, lowers energy bills, and prevents drafts, making it a worthwhile investment for attached or detached garages.
Beyond Residential: Commercial Insulation Insights
Spray foam isn’t just for homes. Consider:
- Restaurants: A 5,000-square-foot Key West eatery might cost $10,000-$27,000 to insulate, keeping kitchens cool.
- Warehouses: A 20,000-square-foot Orlando facility runs $24,000-$62,400, protecting goods from heat.
- Hotels: A 100-room Daytona Beach hotel could hit $50,000-$135,000, ensuring guest comfort.
Our calculator scales to any project—try it out!
Insulation Cost Florida: Spray Foam vs. Alternatives
Not sure if spray foam is right? Here’s how insulation cost Florida stacks up in 2025:
- Fiberglass Batts: $1.80-$3.60 per square foot. Affordable but less effective at air sealing.
- Blown-In Cellulose: $0.96-$2.90 per square foot. Good for attics, weaker against moisture.
- Spray Foam: $2.00-$5.40 per square foot. Top-tier insulation and air sealing, worth it for Florida’s humidity.
Spray foam’s higher upfront cost pays off with energy savings—especially in Florida’s heat. Ask us to compare options for your project!
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Real-World Examples: Spray Foam Across Florida
Our spray foam cost calculator scales from homes to commercial builds. Here’s how it applies to real projects:
A 2,000 sq ft Coffee Shop Build-Out in Sarasota
Opening a coffee shop in Sarasota? Insulating 2,000 square feet with open-cell foam (3 inches, R-10.5) costs $2,400-$3,120 ($1.20-$1.56/sq ft installed). Add closed-cell foam for exterior walls (2 inches, R-13) at $3,120-$6,960, and you’ve got a cozy, efficient space. Sarasota’s mild construction costs and small-business boom make this a smart investment—pair it with an asphalt driveway for $8.50-$18 per square foot.
A 10,000 sq ft Retail Strip Mall in Miami
For a 10,000-square-foot strip mall in Miami, closed-cell foam (3 inches, R-19.5) across walls and roof runs $30,000-$54,000 ($3.00-$5.40/sq ft). Miami’s high land prices and storm codes demand moisture-resistant insulation like closed-cell foam. Add parking lot sealing by foam insulation contractors Florida at $2-$5 per square foot, and you’re set for retail success.
A 50,000 sq ft Distribution Center in Jacksonville
A 50,000-square-foot warehouse in Jacksonville with open-cell foam (5 inches, R-17.5) for the roof costs $60,000-$78,000 ($1.20-$1.56/sq ft). Closed-cell foam for walls (2 inches, R-13) adds $75,000-$174,000. Jacksonville’s logistics appeal and lower land costs keep this affordable, with spray foam ensuring temperature control for goods.
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Question Answer
Frequently Asked Question
Anyone can use it! It’s designed for contractors looking to win more projects with accurate bids, as well as homeowners who want to get a sense of what insulation might cost for their home. Whether you’re a professional or a DIY enthusiast, it’s a handy starting point.
It’s simple—just input details about your project, like the area you’re insulating (in square feet) and any specific requirements you have. The calculator will then give you an estimated cost based on industry averages for spray foam insulation. For a more detailed quote, you can reach out to their team with your plans.
The calculator takes into account both open-cell and closed-cell spray foam insulation. Open-cell is typically cheaper and great for filling small gaps, while closed-cell is denser, offering better insulation and moisture resistance. The cost varies depending on which type you choose.
Costs can range widely depending on your project. On average, open-cell spray foam might run between $0.54 and $0.90 per board foot, while closed-cell could be $1.20 to $1.92 per board foot. For a full surface area, you’re looking at $2.00 to $5.50 per square foot installed, depending on factors like location and complexity.
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