Spray foam insulation and air sealing are among the most effective ways to improve your home's energy efficiency, comfort, and indoor air quality in Miami. Whether you need attic insulation, crawl space sealing, wall foam retrofit, or complete insulation replacement, pricing depends on several factors including project size, foam type, accessibility, and your home's specific needs. We're committed to transparent pricing so you know exactly what to expect before work begins.
Pricing guide
These rates are indicative. Every job is unique: size, access, complexity. Request a free estimate for exact pricing tailored to your situation.
| Service | Price | Details |
|---|---|---|
| Attic Spray Foam Insulation | From $1.50/sq ft | Open-cell foam on the roof deck turns a Miami truss attic that runs 150°F into conditioned space. The AC air handler and ductwork overhead end up inside the envelope. Every estimate lists the R-value target; the thickness per pass; the board footage. |
| Closed Cell Spray Foam Insulation | From $1.20/board ft | Two-pound closed-cell foam delivers R-6.5 per inch with its own vapor retarder and real stiffening on the roof deck. It shrugs off flood water better than any other insulation. The right product for elevated floors; metal buildings and anywhere South Florida humidity pushes hardest. |
| Open Cell Spray Foam Insulation | From $0.55/board ft | Half-pound open-cell foam air-seals attics and interior walls at a friendlier price per board foot. Sound dampening between bedrooms and between townhome units comes with it. We spell out where it belongs, and where flood exposure or a raised floor calls for closed cell. |
| Wall & Injection Foam Insulation | From $2/sq ft | Injection foam fills closed walls through small drilled ports, no demolition. In Miami that means the hollow cores of concrete block walls and the furred cavities behind interior plaster; plus frame walls on older Coconut Grove homes. Ports are patched to match the stucco. |
| Crawl Space Spray Foam Insulation | From $2,500 | Most Miami homes sit on slab, but older frame homes and new elevated houses have open undersides. Closed-cell foam on the subfloor holds back humid air and survives flood water. Standing water and drainage get fixed first, we never spray over wet ground. |
| Rim Joist & Band Joist Spray Foam | From $650 | Cantilevered bonus rooms, elevated homes and second-floor additions leak cooled air at every framing gap. A closed-cell pass seals them for good; the small-ticket job with the fastest comfort payback. |
| Garage Spray Foam Insulation | From $1,200 | Garage ceilings under bonus rooms and walls shared with the house are foam-sealed against radiant heat. Permitted garage conversions and workshops are handled the same way. The difference between a storage oven and usable square footage. |
| Metal Building & Barndominium Spray Foam | From $1.75/sq ft | Closed-cell foam is the insulation that stops a South Florida metal building from dripping. Nursery and farm buildings; boat barns; shops and barndominiums sealed against condensation from Redland acreage to Medley and Hialeah warehouses. |
| Commercial & New Construction Spray Foam | Free commercial estimate | Warehouses; offices; churches and production builders served on schedule. Code-compliant assemblies come with documentation your Miami-Dade or Broward inspector will actually accept. Phased work keeps your operation running from Doral to the Medley industrial belt. |
| Insulation Removal | From $950 | Old blown-in and batts vacuumed out before any new foam goes in, never buried. Roof-rat contamination and storm-wet material come out with it. We also cut out failed spray foam; the job most installers will not touch. Vermiculite gets flagged for testing; never disturbed. |
| Insulation Replacement & Re-Insulation | From $2,800 | The full reset: old material removed; gaps air-sealed; new foam installed to current code R-values. The right call when insulation is flattened; rat-fouled; soaked by a hurricane roof leak, or when a new roof is going on anyway. |
| Air Sealing | From $650 | Top plates; can lights; chases and attic hatches pull humid outside air into a Miami house all year. We seal them before insulating, it cuts the sticky feel indoors and is the cheapest comfort fix in South Florida. |
What Affects the Price
- Project Size and Square Footage : Larger projects typically cost less per square foot due to economies of scale. A 500 sq ft attic will have a different per-unit cost than a 2,000 sq ft space.
- Foam Type (Closed Cell vs. Open Cell) : Closed cell foam is denser and more expensive (starting at $1.20/board ft) but offers superior R-value and moisture resistance. Open cell foam is more affordable (starting at $0.55/board ft) and works well for interior applications.
- Accessibility and Structural Complexity : Hard-to-reach attics, sealed roof decks, or areas with existing insulation removal needs require more labor and equipment, affecting the final cost.
- Additional Services and Cleanup : Insulation removal, air sealing, debris hauling, and post-installation cleanup are separate services that add to your total project cost but ensure a complete, professional result.
What's included
- Travel included across the Miami area
- Professional labor & equipment
- Old insulation vacuumed out, bagged & hauled away
- Job site cleanup
- Written estimate before work begins
To get an accurate estimate for your Miami home, have measurements ready (square footage, ceiling height, and affected areas), note any existing insulation or damage, and be prepared to discuss your energy goals and budget. Call Miami Spray Foam Insulation at (786) 503-8206 to schedule a free, no-obligation consultation. Our team will assess your property and provide a detailed quote that includes all labor, materials, and services.
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Indicative ranges only. Final pricing depends on the thickness and R-value specified, what has to come out first, access, and whether open or closed cell is the right product. Measured on site at the board foot. Minimum job charges apply on small jobs.
Pricing FAQ
Why do spray foam insulation prices vary so much between companies?
Quality, experience, and material grade make a real difference. Some companies use lower-density foam or cut corners on air sealing, which reduces upfront cost but compromises long-term performance. Miami Spray Foam Insulation uses premium materials and proven installation techniques to ensure your insulation performs as promised for decades.
Is there a minimum project cost, or can I get spray foam for a small area?
Yes. Small projects like rim joist sealing start at $650, and garage insulation begins at $1,200. We also handle targeted air sealing and wall foam retrofit. Contact us at (786) 503-8206 to discuss your specific needs and get a quote.
Do you offer financing or payment plans?
We work with homeowners on project budgeting and can discuss options during your free estimate. Call (786) 503-8206 to learn about available payment solutions and how to make your insulation upgrade affordable.
What's included in your starting prices?
Starting prices reflect material and basic installation labor. Your final quote will detail everything included, such as prep work, air sealing, cleanup, and any necessary insulation removal. We provide a complete breakdown so there are no surprises.
How do I know if closed cell or open cell foam is right for my project?
Closed cell foam ($1.20+/board ft) suits attics, crawl spaces, and areas needing moisture protection. Open cell foam ($0.55+/board ft) works well for interior walls and sealed roof decks. Our team evaluates your home's climate, moisture levels, and goals to recommend the best option and pricing.