Spray foam insulation in Dallas–Fort Worth: get up to 3 quotes from vetted local installers
Request free quotes from up to three vetted spray foam installers across Dallas–Fort Worth (Dallas, Tarrant, Collin, Denton, Rockwall, Ellis, Johnson, Kaufman and Parker counties). Below: why DFW now straddles two climate zones, how much insulation to ask for, Texas code, and the Oncor incentive.
- Climate zone: 2A and 3A (2021 IECC)
- Attic target: R-49 (ENERGY STAR, uninsulated attic)
- State code: 2015 IECC (via IRC Chapter 11)
- Utility rebates we verified: Oncor Home Energy Efficiency Program
- Federal 25C credit: ended for 2026 installs
Facts last checked October 16, 2026. Sources are linked in each section.
Where we match quotes from this page
Requests from ZIP codes in Dallas County, Tarrant County, Collin County, Denton County, Rockwall County, Ellis County, Johnson County, Kaufman County, Parker County go to our Dallas–Fort Worth partner installers (273 ZIP codes): 75001, 75002, 75006, 75007, 75009, 75010, 75013, 75019, 75022, 75023, 75024, 75025, 75028, 75032, 75033, 75034, 75035, 75036, 75038, 75039, 75040, 75041, 75042, 75043, 75044, 75048, 75050, 75051, 75052, 75054, 75056, 75057, 75060, 75061, 75062, 75063, 75065, 75067, 75068, 75069, 75070, 75071, 75072, 75074, 75075, 75077, 75078, 75080, 75081, 75082, 75087, 75088, 75089, 75093, 75094, 75098, 75101, 75104, 75114, 75115, 75116, 75119, 75125, 75126, 75132, 75134, 75137, 75141, 75142, 75143, 75146, 75147, 75149, 75150, 75152, 75154, 75156, 75157, 75158, 75159, 75160, 75161, 75164, 75165, 75166, 75167, 75169, 75172, 75173, 75180, 75181, 75182, 75189, 75201, 75202, 75203, 75204, 75205, 75206, 75207, 75208, 75209, 75210, 75211, 75212, 75214, 75215, 75216, 75217, 75218, 75219, 75220, 75223, 75224, 75225, 75226, 75227, 75228, 75229, 75230, 75231, 75232, 75233, 75234, 75235, 75236, 75237, 75238, 75240, 75241, 75243, 75244, 75246, 75247, 75248, 75249, 75251, 75252, 75253, 75254, 75261, 75270, 75287, 75390, 75407, 75409, 75424, 75442, 75452, 75454, 75474, 75491, 75495, 76001, 76002, 76005, 76006, 76008, 76009, 76010, 76011, 76012, 76013, 76014, 76015, 76016, 76017, 76018, 76020, 76021, 76022, 76023, 76028, 76031, 76033, 76034, 76035, 76036, 76039, 76040, 76041, 76044, 76049, 76050, 76051, 76052, 76053, 76054, 76058, 76059, 76060, 76061, 76063, 76064, 76065, 76066, 76067, 76070, 76071, 76078, 76082, 76084, 76085, 76086, 76087, 76088, 76092, 76093, 76102, 76103, 76104, 76105, 76106, 76107, 76108, 76109, 76110, 76111, 76112, 76114, 76115, 76116, 76117, 76118, 76119, 76120, 76123, 76126, 76127, 76129, 76131, 76132, 76133, 76134, 76135, 76137, 76140, 76148, 76155, 76164, 76177, 76179, 76180, 76182, 76201, 76203, 76205, 76207, 76208, 76209, 76210, 76226, 76227, 76234, 76244, 76247, 76248, 76249, 76258, 76259, 76262, 76266, 76272, 76439, 76462, 76486, 76487, 76490, 76623, 76626, 76641, 76651, 76670. Outside these? Send the form anyway and we'll tell you if we can't match you.
Climate zone 2A and 3A: what it means for spray foam
Dallas–Fort Worth spans several counties. Their 2021 IECC climate zones:
| County | 2021 IECC zone | 2015/2018 IECC zone |
|---|---|---|
| Dallas County | 2A | 3A |
| Tarrant County | 2A | 3A |
| Collin County | 3A | 3A |
| Denton County | 3A | 3A |
| Rockwall County | 3A | 3A |
| Ellis County | 2A | 3A |
| Johnson County | 2A | 3A |
| Kaufman County | 3A | 3A |
| Parker County | 3A | 3A |
Source: PNNL-33270, Guide to Determining Climate Zone by County (IECC 2021).
Open cell vs closed cell in Dallas–Fort Worth
Attic roofline: in climate zones 1–3 an unvented ("sealed") attic with open-cell foam sprayed under the roof deck is a common way to bring attic ductwork and air handlers inside the insulated envelope. The International Residential Code (Section R806.5) allows unvented attics with air-impermeable insulation such as spray foam; for a hybrid "flash-and-fill" assembly the foam layer at the deck must be at least R-5 in zone 2A.
Humidity: in a hot-humid climate, a sealed attic becomes part of the conditioned house. Ask how the installer and your HVAC contractor will handle attic humidity (for example a small supply-air connection or dehumidification).
Closed cell earns its higher price where you need a vapor retarder or water resistance: crawlspace walls, rim joists, below-grade walls.
How much insulation to ask for
| Where | ENERGY STAR recommendation for zone 2A |
|---|---|
| Attic, uninsulated | R-49 |
| Attic with 3–4" of existing insulation | add R-38 |
| Floor over unconditioned crawlspace/basement | R-13 |
To reach R-49 with foam alone you'd need roughly 13.2–14.0" of open cell (about R-3.5 to R-3.7 per inch) or 7.0–9.8" of closed cell (about R-5 to R-7 per inch). Many roofline spray foam jobs are installed thinner than that and justified through the code's performance path or the unvented-attic rules, so ask every installer to write the foam type, thickness and resulting R-value on the quote and explain how it meets your local code.
Source: ENERGY STAR, Recommended Home Insulation R-Values (based on 2021 IECC). ENERGY STAR's figures are recommendations for existing homes; your local code sets the legal minimum for new work.
Texas energy code
2015 IECC (via IRC Chapter 11), effective September 1, 2016. Texas SB 783 (effective September 1, 2025) directs the State Energy Conservation Office and Texas A&M Energy Systems Laboratory to review the 2024 IECC for possible adoption.
Source: NAHB, "Residential Provisions of the IECC: State Adoption Status" (current as of May 2026); official state status at DOE Building Energy Codes Program.
Homes in Dallas–Fort Worth
Census figures for Dallas-Fort Worth-Arlington metro area (CBSA 19100) (ACS 2020–2024 5-year estimates): about 3,096,731 housing units, a median year built of 1993, 30% built before 1980 and 22% built in 2010 or later. 63% are single-family detached homes and 3% are mobile/manufactured homes. 60% of occupied homes are owner-occupied, with a median owner-reported home value of $359,500.
- 62% of homes heat with electricity (furnaces, heat pumps or baseboard). Several utility insulation rebates are aimed at electric-heat or central-A/C customers, so check the programs below.
| Core county | Housing units | Median year built | Built 2010+ | Electric heat | Owner-occupied |
|---|---|---|---|---|---|
| Dallas County | 1,064,965 | 1983 | 14% | 62% | 51% |
| Tarrant County | 843,257 | 1990 | 17% | 67% | 59% |
| Collin County | 437,396 | 2003 | 33% | 50% | 65% |
| Denton County | 376,754 | 2003 | 33% | 54% | 66% |
Rebates and incentives for Dallas–Fort Worth
Utility programs that may apply, depending on which utility serves your address:
Oncor Home Energy Efficiency Program
Incentives paid to approved service providers (and passed through as a lower price) for attic insulation when existing insulation is R-22 or less and the upgrade reaches R-38 or better.
Read on the program's own page October 16, 2026. Programs change; confirm before you sign.
Texas state Home Energy Rebates
Not yet launched Texas Home Energy Rebates
Electrification/appliance rebates (HEAR): "Rebates are not currently available. The programs are currently in the planning and design phase, and a future launch date will be established once the state has approval from DOE."
Whole-home efficiency rebates (HOMES/HER): "Rebates are not currently available. The programs are currently in the planning and design phase, and a future launch date will be established once the state has approval from DOE."
Max rebate (per official page): Rebates will be determined based on technology and can range up to $14,000 per household.
Official source: State Energy Conservation Office (SECO) (page says: Updated August 21, 2026). Status text compiled via referencesource.org, last checked by them August 25, 2026. Full Texas rebate page →
What spray foam costs (national published ranges)
We don't have enough local quotes for Dallas–Fort Worth to publish local prices, and we won't make them up. These national ranges are a starting point; your installers' quotes are what count.
| Example job (typical thickness) | Estimated installed range |
|---|---|
| 1,000 sq ft attic roofline, open cell (6") | $3,600–$9,600 |
| 1,000 sq ft attic roofline, closed cell (3") | $3,900–$9,300 |
| 1,500 sq ft walls, open cell (3.5") | $3,150–$8,400 |
| 1,500 sq ft walls, closed cell (2") | $3,900–$9,300 |
| 200 sq ft rim joists, closed cell (2") | $520–$1,240 |
Board feet × Angi's 2026 installed price per board foot. Angi reports a national average spray foam project of $2,888 (typical $1,455–$4,337). Check a quote you already have →
Questions to ask each installer
- Foam type, brand, thickness and resulting R-value for each area, in writing.
- Which climate zone and code edition they're designing to.
- Whether removal of old insulation, air sealing, and any required ignition/thermal barrier coating are included.
- Whether they participate in Oncor Home Energy Efficiency Program, and who files the paperwork.
- Whether they'll do (or coordinate) combustion safety testing if you have gas appliances.
FAQ
What climate zone is Dallas–Fort Worth in?
Under the 2021 IECC county map, the counties in Dallas–Fort Worth are Dallas County 2A, Tarrant County 2A, Collin County 3A, Denton County 3A, Rockwall County 3A, Ellis County 2A, Johnson County 2A, Kaufman County 3A, Parker County 3A (PNNL-33270).
Should I use open-cell or closed-cell spray foam in Dallas–Fort Worth?
For attic rooflines in zone 2A, open cell is common and code-permitted in unvented attics; closed cell is worth the premium for crawlspace walls, rim joists and metal buildings.
How much attic insulation do homes in Dallas–Fort Worth need?
ENERGY STAR recommends R-49 for an uninsulated attic in zone 2A (or adding R-38 on top of 3–4 inches of existing insulation). Texas's code: 2015 IECC (via IRC Chapter 11).
Are there spray foam or insulation rebates in Dallas–Fort Worth in 2026?
The federal 25C tax credit does not apply to insulation installed after December 31, 2025. Utility programs that may apply, depending on which utility serves your address: Oncor Home Energy Efficiency Program. Texas's state Home Energy Rebate program status: Not yet launched.
How much does spray foam cost in Dallas–Fort Worth?
We don't publish local prices until we have enough real local quotes. National published ranges are about $0.60–$1.60 per board foot for open cell and $1.30–$3.10 for closed cell, installed (Angi, 2026), and many companies have a $1,000–$2,000 minimum.
How does requesting quotes work?
Fill in the form once. We pass your request to up to three vetted partner installers who serve Dallas–Fort Worth, and they contact you to schedule an estimate. It's free and there's no obligation.
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