Spray foam insulation cost in Atlanta, GA (as of October 2026)

Prices as of October 2026. Sources checked October 18, 2026.

An Atlanta spray foam job is priced at $0.60 to $1.60 per board foot for open-cell and $1.30 to $3.10 per board foot for closed-cell, installed. Those are Angi's 2026 national numbers, updated September 9, 2026; we could not find a published Atlanta-only rate, so every metro dollar figure below is our own multiplication, shown step by step near the bottom.

What moves an Atlanta bill most is where the foam goes. Foam sprayed on the attic floor of a vented attic has to reach R-38 under Georgia's energy code. Foam sprayed under the roof deck, sealing the attic, can stop at R-20 when the house meets four Georgia conditions. That one choice roughly halves the board feet, and it can also affect which Georgia Power rebates you can claim. We priced both on a 1,500 square foot attic.

Atlanta spray foam price table

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.

Vented attic floor or sealed roofline: what Georgia's code allows

Atlanta does not write its own energy code. The City of Atlanta Office of Buildings follows the state minimum codes; for permit applications submitted from February 1, 2026 that means the 2024 IRC with Georgia amendments, while energy rules still come from the 2015 IECC with Georgia supplements and amendments from 2020, 2022 and 2023. The state's current-codes list shows no newer energy amendment.

Atlanta sits in climate zone 3, where Georgia's table calls for R-38 in a ceiling with an attic above it. Georgia softens that in two ways that matter for foam pricing:

• R-30 can count as R-38 on the attic floor when R-30 covers all of the ceiling and keeps its full uncompressed height out over the wall top plates at the eaves. That only works on the prescriptive path, not the U-factor or total UA options.
• R-20 at the roof deck can count as R-38 when it is air-impermeable insulation, which Georgia's own examples say includes spray foam. Section R402.1.2.1, added January 1, 2022, attaches four conditions: a blower door result under 3 ACH50; whole-house mechanical ventilation that is positive, balanced or hybrid rather than exhaust-only; R-3 wrap over any rafter faces the foam leaves exposed, unless drywall covers them; and the HVAC equipment and ducts inside the thermal envelope.

The first of those four is strict. Georgia's code tests new one- and two-family houses against a limit of under 5 ACH50, so a sealed attic is held to a tighter number than that baseline. Budget for a blower door test and, if you have no fresh-air system now, for adding one. We found no published Atlanta price for either, so neither is in our totals.

We found no Georgia change to the model code's unvented attic section (R806.5) in the 2026 IRC amendment packet. Georgia's state code also leaves third-party verification to each local government through Appendix RC, so ask the Office of Buildings (404-330-6150) whether your permit needs it.

Sources: City of Atlanta, Current Georgia Minimum Codes for Construction; Georgia DCA, Current State Minimum Codes for Construction; Georgia DCA, 2020 IECC Supplements and Amendments (PDF); Georgia DCA, 2022 IECC Amendments (PDF); Georgia DCA, 2024 IRC Georgia Amendments, Revised January 1, 2026 (PDF).

Sealing an attic and Georgia Power's rebates

Georgia Power's Home Energy Improvement Program pays 50% of the cost of attic insulation, up to $300 for electric customers and $200 for gas-heated homes. Its 2026 preconditions (rebates effective August 1, 2026) require existing attic insulation below R-19, but the program's web FAQ says R-38 or less, so confirm eligibility with Georgia Power. Spray foam, open or closed cell, needs a test-in and test-out, and homes with combustion appliances must pass combustion safety testing. The added insulation should reach R-49 or meet current state code as the structure allows, and it has to cover the whole attic.

The bundles carry an extra condition. Georgia Power's duct repair rebate and its three-part Home Comfort bundle (attic insulation, air sealing and duct repair) both require that most of the ductwork sit in unconditioned space, such as the attic or crawl space. Georgia's code treats a code-built unvented attic as indirectly conditioned space. Georgia Power does not say how it treats ducts in an attic that is being sealed, so if you are weighing a roofline job, ask Georgia Power before you sign whether the duct and bundle rebates would still apply.

The two Georgia Power documents also disagree on bundle caps. The preconditions PDF caps the three-part bundle at $1,700 ($1,400 for gas homes) and the two-part Comfort Duo at $1,000 ($800 gas). The program web page lists the Home Comfort Trio at up to $1,850 and the Basic Comfort Duo at up to $1,150. For electric customers, air sealing pays up to $400 and duct sealing up to $600 in both documents. The web page asks for your application within 60 days of the paid-in-full invoice. Treat the lower figures as the safe planning number until Georgia Power confirms.

On a typical foam job the attic rebate is capped long before 50% runs out. Half of even our smallest attic total, $5,600, is $2,800, so a Georgia Power electric customer gets $300 and a gas-heated home $200.

Sources: Georgia Power, Home Energy Improvement Program; Georgia Power, HEIP Preconditions and Requirements 2026 (PDF); Georgia DCA, 2020 IECC Supplements and Amendments (PDF).

Is your Atlanta-area address on Georgia Power or an EMC?

Inside Atlanta city limits homes are on Georgia Power. Across the metro, electric territory is assigned by address, and three large co-ops cover much of the north and east side. Each runs its own program, and Georgia Power's rebate applies only to Georgia Power accounts.

• Cobb EMC serves parts of Cobb, Cherokee, Paulding, Bartow and Fulton counties. Its Energy Efficiency Incentive pays up to $500, once every five years, toward attic insulation and some other upgrades, for members in single-family homes. Air sealing is excluded, an energy audit is optional, funds are first-come, first-served, and the credit lands on your bill. Cobb EMC's Service Address Finder confirms whether you are a member.
• Sawnee EMC serves parts of Forsyth, Fulton, Dawson, Lumpkin, Cherokee, Hall and Gwinnett counties under the 1973 Territorial Act. It describes its edges as the Chattahoochee River at GA 400 to the south, S.R. 60 at GA 400 to the north, Holly Springs to the west and Flowery Branch to the east. Its 2026 attic rebate pays half the cost, up to $200, for raising the whole attic to R-49 or more, and excludes homes built after January 1, 2021. Requests are due by December 31. A roofline foam job may not show an R-49 attic, so ask Sawnee first.
• Jackson EMC covers ten counties from metro Atlanta to Gainesville and Athens. Gwinnett is its largest by far, with about 135,900 meters, followed by Hall, Jackson and Barrow. Members pay for a Home Energy Evaluation by a Right Choice technician and get $200 back, then 50% of insulation or air sealing up to $400 and 50% of duct sealing or replacement up to $400. The work must be an "A" or "B" item on the report, done by a Participating Contractor Network member and inspected afterward. Jackson EMC's page also says "up to $1,400"; the listed items add to $1,000, so ask which is current. It mentions financing for efficiency upgrades without published terms.

Other co-ops serve other parts of the metro, so check the name on your bill.

Sources: Cobb EMC, Our Mission; Cobb EMC, Energy Efficiency Incentive; Cobb EMC, Service Address Finder; Sawnee EMC, Service Area; Sawnee EMC, Rebates and Incentives; Jackson EMC, Facts and Service Area; Jackson EMC, Home Energy Evaluation Rebate.

Crawl spaces under older Atlanta homes

Sealing a crawl space is the other common foam job here. Georgia allows insulating crawl space walls in place of the floor only when the crawl space is not vented to the outside. The insulation must reach from the floor to within 9 inches of the interior grade, leave a 3-inch termite inspection strip just under the floor joists, and sit over a continuous Class I vapor retarder on the ground, lapped 6 inches, taped, and run 6 inches up the stem wall. Since 2022 Georgia also wants rim joist insulation to be removable for pest inspections, which affects how foam is applied at the band. The zone 3 wall figure is R-5 continuous or R-13 in a cavity, and the floor alternative is R-19.

Published crawl space totals run $1,200 to $6,900 (Angi) and $2,000 to $4,000 (HomeGuide). We did not model one, because crawl space size and vapor retarder scope differ so much between houses.

Sources: Georgia DCA, 2020 IECC Supplements and Amendments (PDF); Georgia DCA, 2022 IECC Amendments (PDF); 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).

Gas, state and federal help

• Atlanta Gas Light delivers gas, but you buy it from a certified marketer, and AGL's rebates require an active account with one. Its residential rebates cover furnaces, water heaters, dryers and conversions to gas. We found no insulation rebate.
• Georgia's Home Energy Rebates: the whole-home HER program can include insulation and air sealing after an assessment, with amounts tied to income and expected energy savings. HEAR has been paused since August 14, 2026; the state says it will reopen with limited funding in October 2026, and only for wiring and panel upgrades tied to a HER project, not insulation.
• Federal 25C credit: over. The IRS says the Energy Efficient Home Improvement Credit covers improvements made through December 31, 2025, so a 2026 Atlanta job gets no federal credit.

Sources: Atlanta Gas Light, Residential Rebates; Georgia's Home Energy Rebates; Georgia's Home Energy Rebates, HEAR Program Updates; IRS, Energy Efficient Home Improvement Credit.

See Georgia programs and every area we serve on our Georgia page, local housing and climate data on the Atlanta spray foam page, and the state-by-state picture in our 2026 insulation rebate tracker.

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The arithmetic behind every Atlanta number

No Atlanta-specific board-foot price is published, so we used Angi's national installed range throughout. A board foot is one square foot of foam one inch thick, so board feet are area times depth. Depth is the target R-value divided by R per inch, using the product-sheet values of R-3.6 for open-cell and R-6.8 to R-7.1 for closed-cell (the thinner closed-cell depth goes with the low price, the thicker with the high price). Assumptions: a 1,500 square foot attic floor, and a 6-in-12 roof pitch, which makes the underside of the deck 1.118 times the floor, or about 1,677 square feet. Gable end walls are left out, so real roofline quotes will run higher.

• Floor, open-cell, R-38: 38 / 3.6 = 10.56 in; 1,500 x 10.556 = 15,833 board feet; at $0.60 that is $9,500, at $1.60 it is $25,333. Rounded: $9,500 to $25,300.
• Floor, open-cell, R-30: 30 / 3.6 = 8.33 in; 12,500 board feet; $7,500 to $20,000.
• Floor, closed-cell, R-38: 38 / 7.1 = 5.35 in (8,028 board feet) up to 38 / 6.8 = 5.59 in (8,382 board feet); 8,028 x $1.30 = $10,437 and 8,382 x $3.10 = $25,985. Rounded: $10,400 to $26,000.
• Floor, open-cell, R-49: 49 / 3.6 = 13.61 in; 20,417 board feet; $12,250 to $32,667. Rounded: $12,300 to $32,700.
• Deck, open-cell, R-20: 20 / 3.6 = 5.56 in; 1,677 x 5.556 = 9,317 board feet; $5,590 to $14,907. Rounded: $5,600 to $14,900.
• Deck, closed-cell, R-20: 20 / 7.1 = 2.82 in (4,724 board feet) up to 20 / 6.8 = 2.94 in (4,932 board feet); 4,724 x $1.30 = $6,141 and 4,932 x $3.10 = $15,290. Rounded: $6,100 to $15,300.
• Walls, per 1,000 sq ft: open-cell fills a 2x4 at 3.5 in, 3,500 board feet, $2,100 to $5,600; closed-cell at 2 in, 2,000 board feet, $2,600 to $6,200.
• Georgia Power attic rebate: 50% of any total above $600 exceeds the $300 cap, so the payment is $300 (electric) or $200 (gas-heated).

Every figure here is a planning range, not a bid. Attic access, roof pitch, old insulation that has to come out, and crew rates all push real prices around. To compare live Atlanta bids, get quotes and run each one through the quote checker.

Atlanta spray foam cost FAQ

How much is spray foam per board foot in Atlanta?

Roughly $0.60 to $1.60 open-cell and $1.30 to $3.10 closed-cell, installed, from Angi's 2026 national figures. We found no Atlanta-only rate.

How thick does roofline spray foam need to be in Georgia?

Air-impermeable insulation at R-20 under the roof deck counts as the R-38 ceiling, if the house tests under 3 ACH50, has positive, balanced or hybrid ventilation, wraps exposed rafters with R-3 and keeps ducts and equipment inside the envelope. At the product-sheet R-values that is about 5.6 inches of open-cell or 2.8 to 2.9 inches of closed-cell.

Will Georgia Power give a rebate for spray foam?

Yes, for Georgia Power customers, if the job qualifies: 50% of the cost up to $300, or $200 for gas-heated homes, with a test-in and test-out. Its 2026 preconditions say existing insulation must be below R-19 while its FAQ says R-38 or less, so confirm with Georgia Power. Duct and bundle rebates require most ducts to be in unconditioned space.

Can I still claim the federal insulation tax credit?

No. The IRS limits the 25C credit to improvements made through December 31, 2025.