Spray foam insulation cost in Tampa, FL (as of October 2026)
Prices as of October 2026. Sources checked October 18, 2026.
Expect $0.60 to $1.60 per board foot for open-cell spray foam in Tampa and $1.30 to $3.10 for closed-cell, installed. Those are Angi's 2026 national ranges, updated September 9, 2026. Nobody we found publishes a Tampa-specific rate, so every local dollar figure here is our own arithmetic, written out in full.
Tampa adds an insurance question. Florida's 2026 wind mitigation form gives spray foam its own roof-deck attachment box, but only for products with a stated uplift resistance, and what that does to a premium is up to your insurer. On the rebate side, Tampa Electric pays $0.16 per square foot for each R-11 added, Duke Energy Florida pays up to $800 to reach R-38, and neither says whether foam qualifies, so ask the utility first.
What Tampa crews charge
| Measure | Open-cell | Closed-cell | Source |
|---|---|---|---|
| Installed, per board foot | $0.60 to $1.60 | $1.30 to $3.10 | Angi, Sep 9, 2026 |
| Installed, per square foot | $1.50 to $3.50 | $3.00 to $5.00 | HomeGuide, Dec 1, 2025 |
| Thermal resistance per inch | R-3.6 | R-6.8 to R-7.1 | Profoam product sheet |
| Minimum charge for small jobs | $1,000 to $2,000 or more | HomeGuide, Dec 1, 2025 | |
Sources: Angi, "How Much Does Spray Foam Insulation Cost? [2026 Data]" (updated Sep 9, 2026); HomeGuide, "How Much Does Spray Foam Insulation Cost? (2026)" (Dec 1, 2025); Profoam product price sheet.
Worked examples, written out
Every example uses a 1,700 square foot single-story ranch, a size we picked for illustration rather than a Tampa median. A board foot is one square foot of foam one inch thick, so we multiply area by depth, then by Angi's low and high rates, and round to the nearest $100. The thinner closed-cell depth goes with the low rate, the thicker with the high.
Attic floor brought to R-38
Florida's energy code compliance form lists R-38 for a climate zone 2 ceiling. Open-cell at R-3.6 per inch needs 38 ÷ 3.6, or about 10.6 inches. Spread over 1,700 square feet that is roughly 17,944 board feet, which prices out at $10,800 on the low end and $28,700 on the high end. Closed-cell needs 5.4 to 5.6 inches (38 ÷ 7.1 and 38 ÷ 6.8), about 9,099 to 9,500 board feet, for $11,800 to $29,500.
Closed-cell sprayed under the roof deck
A 4/12 roof over the same footprint has about 1,792 square feet of deck (1,700 × 1.054), not counting gable ends. Three inches of closed-cell, Profoam's typical roofline depth, is 5,376 board feet and lands near R-20.4 to R-21.3. Cost: $7,000 to $16,700. Six inches of open-cell in the same spot is 10,752 board feet, about R-21.6, for $6,500 to $17,200. Both fall short of R-38, so ask the installer which code path the permit would use for a roof-deck assembly. Only closed-cell foam was part of the uplift testing described below.
What a utility rebate returns on that attic
Tampa Electric counts each R-11 added. Adding R-22 over 1,700 square feet returns 2 × $0.16 × 1,700, or $544; adding R-33 returns $816. A Duke Energy Florida customer starting at R-2 or less and finishing at R-38 or more would see $0.31 × 1,700, or $527, under that utility's $800 cap. Both assume the utility accepts the job, which for foam is a question to ask first.
800 square feet of 2x4 frame wall
Filling a 3.5 inch cavity with open-cell uses 2,800 board feet (about R-12.6) and runs $1,700 to $4,500. Two inches of closed-cell, Profoam's typical wall depth, uses 1,600 board feet (about R-13.6 to R-14.2) for $2,100 to $5,000. Jobs this small often run into a crew's $1,000 to $2,000 minimum.
Sources: Angi, "How Much Does Spray Foam Insulation Cost? [2026 Data]" (updated Sep 9, 2026); Profoam product price sheet; HomeGuide, "How Much Does Spray Foam Insulation Cost? (2026)" (Dec 1, 2025); Florida Building Commission, Form R402-2023 (PDF); Tampa Electric, Ceiling Insulation; Duke Energy Florida, Attic Insulation Rebate.
Foam as a hurricane upgrade: what the testing and the state forms say
The lab evidence, with its limits. In 2007, University of Florida civil engineers tested 30 wood roof panels in a vacuum chamber. Each was a 4 by 8 foot sheet of ½ inch OSB on 2x4 southern yellow pine members 2 feet apart, with the screws removed just before testing so closed-cell spray foam alone held the sheathing. Across three foam layouts the mean failure pressure was 196 psf of static suction. Control panels from an earlier UF study, nailed at 6 inches on the edges and 12 inches in the field, failed at means of 75 and 78 psf, so the report puts the foam panels at about 2.6 times that capacity.
The report itself warns that the samples were small (about 10 per layout) and built under controlled laboratory conditions; that moisture in the spray equipment, and probably on the wood, sharply reduced bond strength; that fluctuating wind loads are likely to give different results; and that field-installed foam still needed testing. A spray foam manufacturer sponsored the work, and open-cell foam was not tested. It is one lab study, not a rating for any product on the market.
The insurance form. Florida's Uniform Mitigation Verification Inspection Form, OIR-B1-1802 (Rev. 04/26), must be used for all wind mitigation inspections as of April 1, 2026. Its roof-deck attachment question includes a box for "spray foam products with an uplift resistance of 110 PSF (FOS 1.5)," which "must be installed along rafter deck intersections, all panel joints, etc." Its sealed roof deck question also lists spray foam products installed the same way. At least one photo or document must prove each attribute, and a completed form is valid for up to five years if the structure doesn't materially change. Ratings vary by product, and each insurer applies its own discounts, so ask your insurer or a wind mitigation inspector whether a specific foam would qualify before you buy, and keep the paperwork.
The state grant. My Safe Florida Home, run by the Department of Financial Services, offers free wind mitigation inspections and grants for recommended upgrades. Its own description of roof-deck attachment is adding more or longer nails. For a sealed roof deck when you are not replacing the roof, it accepts foam adhesive on all seams and joints from the attic side. Matching grants reimburse two-thirds of the project cost up to $10,000, subject to legislative appropriation, and the program's site currently says grants and inspections are available.
Sources: University of Florida, "Improving the Wind Uplift Capacity of Wood Roof Panels Retrofitted with ccSPF Adhesives," Report 04-07, October 19, 2007 (PDF, principal investigator's site); Florida Office of Insurance Regulation, Form OIR-B1-1802 (Rev. 04/26) (PDF); Florida Department of Financial Services, Mitigation Notices, Inspections and Forms; My Safe Florida Home, Improvement 3.0: Roof Deck Attachment; My Safe Florida Home, Improvement 4.0: Secondary Water Resistance; My Safe Florida Home, maximum grant amount; My Safe Florida Home.
Tampa Electric, Duke and FPL: which attic rebate applies
Tampa Electric serves Hillsborough County and parts of Pasco, Pinellas and Polk. Duke Energy Florida's territory includes St. Petersburg and Clearwater, and Duke and Peace River Electric Cooperative also serve parts of Hillsborough. Across the bay to the south, FPL lists Manatee and Sarasota among the counties it serves. Check the name on your bill before you plan around any of these.
- Tampa Electric. The rebate is $0.16 per square foot per R-11 installed. A pre-approval attic inspection is required; if insulation is recommended, the energy analyst issues a rebate certificate good for one year and a list of approved contractors, and the contractor deducts the rebate from the invoice. Owner-installed insulation also qualifies if you apply within 90 days. The program standards approved by the Florida PSC in 2025 require electric whole-house air conditioning or heating and at least R-11 added. TECO's 2020 standards let a spray foam job stop at R-20 instead of R-30; the current standards do not mention spray foam, so ask Tampa Electric whether a foam job, especially one at the roof deck, qualifies. Rebate line: 813-275-3909.
- Duke Energy Florida. The attic rebate (effective May 7, 2025) pays $0.25 per square foot up to $600 from R-19 or less, $0.27 up to $700 from R-12 or less, or $0.31 up to $800 from R-2 or less, to reach at least R-38. You need a free Home Energy Check within the past 24 months, a Duke-approved contractor and whole-house cooling or electric heat. Manufactured homes and homes that already used the program are excluded. Duke's page does not say whether spray foam counts, so ask Duke.
- FPL. Its ceiling insulation rebate is $220 per installation when existing insulation is below R-8, through a participating contractor. FPL's standards (effective September 1, 2025) list spray foam among eligible types but exclude flat roofs and inaccessible attics.
Sources: Tampa Electric, Economic Contribution; Tampa Electric, Ceiling Insulation; Florida PSC, Tampa Electric DSM plan staff recommendation with program standards filed Dec 13, 2024 (PDF); Florida PSC, Order PSC-2025-0137-CO-EG (PDF); Florida PSC, Tampa Electric program standards, 2020 filing (PDF); Duke Energy Florida, 2024 Ten-Year Site Plan (PDF, Florida PSC); Duke Energy Florida, Attic Insulation Rebate; FPL, External Affairs Service Area Map, updated April 13, 2026 (PDF); FPL, Residential Ceiling Insulation Program Standards, effective September 1, 2025 (PDF).
Florida's code: R-38 and a new edition
Florida writes its own statewide code. Permits today fall under the 8th Edition (2023) Florida Building Code. The 9th Edition (2026), based on the 2024 International Building Code, takes effect December 31, 2026; ask the City of Tampa which edition applies to your application date.
Under the 8th Edition energy code, the compliance form lists R-38 for a climate zone 2 ceiling, and new homes must pass a blower door test at 7 ACH50. A retrofit is not forced to R-38, but that is the number a permitted attic job is measured against, which is why the first example uses it. For a roof-deck foam job, and for your parcel's design wind speed, ask the building official or your installer how the permit will be reviewed.
Sources: Florida Building Commission, Form R402-2023 (PDF); Florida Building Commission, Commission Milestones (9th Edition effective December 31, 2026) (PDF); Florida Building Commission, 9th Edition Advanced Course text (PDF).
Damp air in an attic
NOAA's Comparative Climatic Data show Tampa International at 86% relative humidity in the early morning and 58% in mid-afternoon across the year, rising to 89% on September mornings. Phoenix, for comparison, averages 46% and 23%. Foam under the roof deck brings the attic inside the house's air, so ask the installer how that space will be kept dry.
Sources: NOAA NCEI, Comparative Climatic Data, relative humidity (data through 2023).
Federal credit
The IRS says the 25C Energy Efficient Home Improvement Credit covers improvements made through December 31, 2025. Spray foam installed in 2026 gets no federal credit.
Sources: IRS, Energy Efficient Home Improvement Credit.
Before you sign
Compare bids on the same three numbers: area, inches and foam type. Multiply them by the rates above and question any quote far outside that range; the quote checker does the multiplication. Housing and permit notes are on the Tampa spray foam page, other Florida areas on our Florida page, and the state-by-state picture in our 2026 insulation rebate tracker.
Tampa spray foam questions, answered
Will spray foam lower my Tampa windstorm insurance?
It might, but that depends on the product and your insurer. Florida's 2026 wind mitigation form (OIR-B1-1802, Rev. 04/26) has a roof-deck attachment box for spray foam products with an uplift resistance of 110 psf (FOS 1.5), installed along rafter-deck intersections and all panel joints, and the inspector needs a photo or document proving it. Ratings vary by product, and insurers set their own credits, so ask your insurer or wind mitigation inspector before you buy.
Does Tampa Electric's rebate cover spray foam?
Ask Tampa Electric. Its current program standards pay $0.16 per square foot of qualifying insulation in R-11 steps after a pre-approval attic inspection, and they do not mention spray foam either way. The 2020 version had a spray foam clause; the current one does not.
Which Florida Building Code edition applies to a Tampa permit?
The 8th Edition (2023) applies now. The 9th Edition (2026) takes effect December 31, 2026, so ask the City of Tampa which edition your application date falls under.
How thick should spray foam be on a Tampa attic floor?
About 10.6 inches of open-cell or 5.4 to 5.6 inches of closed-cell reaches R-38, the climate zone 2 ceiling value on Florida's 2023 energy code compliance form.