Cost + rebates guide. Pasadena, Texas. Updated May 2026.

Pasadena Spray Foam Cost + 2026 Rebates Guide

Real 2026 Pasadena pricing, the CenterPoint Energy rebate that's still active, the Texas energy code R-value targets, and the simple math on whether foam pays back on your AC bill. The federal Section 25C tax credit that contractor websites keep quoting? Terminated December 31, 2025 by Public Law 119-21. Anyone telling you otherwise about a 2026 install is reading off a 2024 page.

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Pasadena spray foam in 2026: the 5 numbers that matter

Five primary-source numbers any Pasadena homeowner needs before scoping a job.

1. Cost. A typical Pasadena attic foamed at 6 inches of open-cell on the roof deck runs $3,500 to $8,500 installed in 2026 (HomeAdvisor national average: $2,889).
2. Rebate. CenterPoint Energy pays 40% of project cost up to $750 (all-electric) or $450 (gas), approved contractors only.
3. Federal credit. Section 25C terminated for installs placed after December 31, 2025 per IRS guidance on Public Law 119-21. 2026 installs do not qualify.
4. R-value target. EnergyStar recommends R-49 attic for IECC Climate Zone 2A (Pasadena/Harris County).
5. AC bill drop. EPA estimates 15% on heating and cooling costs from air sealing plus attic insulation. Combined-improvements range hits 25 to 40% in older Houston homes.

Five numbers, all sourced. Below: the cost table, the open-cell vs closed-cell call, the code math, and the CenterPoint application path.

What's the difference between open-cell and closed-cell foam in Houston?

Two different products. Different jobs. Different prices. The Houston climate pushes most attic deck installs toward open-cell, and most crawl space, rim joist, and metal-building installs toward closed-cell.

Here's the DOE primary data on R-value and air-barrier behavior, with HomeAdvisor cost ranges layered in.

Closed-cell hits R-6.5 per inch and acts as a Class II vapor retarder at 2 inches. Open-cell hits R-3.7 per inch and stays vapor permeable, which lets a Houston roof deck breathe instead of trapping moisture between foam and shingles. Both are air barriers at the right thickness per ICC 1100.

When to pick open-cell

• Attic deck, encapsulated attic. This is the standard Houston pick. Cost-effective, vapor permeable, plenty of R when sprayed at 6 to 8 inches.
• Interior walls for sound damping. Open-cell deadens sound better than closed-cell.
• Older Pasadena homes (1970s and 1980s) where you want the attic in the conditioned envelope. Open-cell at the roof deck plus removing old settled batts is the typical upgrade.

When to pick closed-cell

• Crawl spaces and rim joists. Water resistance and structural rigidity matter here.
• Metal buildings and barndominiums. Steel + condensation = closed-cell every time.
• Flood-prone slabs or low elevations. Closed-cell holds up to short-term water exposure.
• When you need maximum R-value in minimum thickness. Closed-cell at 4 to 5 inches hits R-49 in less depth than open-cell at 13 inches.

Does the federal tax credit still apply in 2026?

No. Section 25C, the Energy Efficient Home Improvement Credit, was terminated for property placed in service after December 31, 2025. The change came from Public Law 119-21, the One Big Beautiful Bill Act, signed July 4, 2025.

This is the single biggest change in the 2026 incentive picture and the one most contractor websites still get wrong.

What this means for you

• 2025 install? Still claim it on your 2025 federal return via Form 5695. That window closes when you file.
• 2026 install? Cannot claim Section 25C. The 2032 sunset that the Inflation Reduction Act of 2022 had originally scheduled is gone.
• 2026 incentive picture? CenterPoint Energy rebate (next section) plus any active Texas SECO programs.

The IRS published the official guidance at the FAQ on Public Law 119-21 modifications to Sections 25C/25D/25E/30C/30D/45L/45W/179D. A lot of contractor websites still quote the old 25C rules with 30% / $1,200 / 2032 sunset language. That's wrong for 2026 work. Verify any rebate or credit claim against the official IRS guidance before relying on it.

This is general information, not tax advice. Confirm with your CPA.

What about the Texas state HOMES and HEAR programs?

Not yet launched as of May 2026. The Texas State Energy Conservation Office (SECO), part of the Texas Comptroller, received a $690 million combined federal allocation for the IRA-funded HOMES and HEAR programs. APTIM Federal Services is contracted to plan the rollout, and that early-phase work runs through fall 2026.

Fraud alert. SECO explicitly warns that no approved contractors exist for HOMES or HEAR yet. Any contractor claiming HOMES or HEAR rebate access in 2026 is operating outside the approved process.

The Texas SECO LoanSTAR program is also commonly mentioned online, but it's a public-institution loan program for schools, hospitals, agencies, and community centers. Not available to homeowners. Mentioned here for completeness because it shows up in Texas energy-program search results.

For the current SECO status: Texas State Energy Conservation Office IRA programs page.

Why does Houston's climate make insulation more critical?

Houston runs hotter, longer, and more humid than almost any other major U.S. metro. The numbers below are NOAA 1991-2020 climate normals from the IAH station, the official long-period reference for the Houston metro.

102 days a year at or above 90°F. 35 days a summer where the heat index exceeds the actual temperature because the dewpoint sits in the mid-70s. Wikipedia's NOAA-cited Climate of Houston entry compares Houston summer to "tropical climates such as the Philippines and lower-elevation Central America." That's the load your AC fights from May through September.

What that does to a Pasadena attic

The Florida Solar Energy Center at UCF measured 21 houses across multiple roof configurations in their FSEC-PF-336-98 study. Peak attic temperatures for shingle roof with poor ventilation: 130°F. Texas industry sources commonly cite 130 to 150°F attic peaks during peak summer in south-central Texas, the same humid subtropical climate band.

At 140°F attic temp:

• HVAC ducts running through the attic radiate heat into the conditioned air stream. The DOE assumes 23% typical duct leakage in 1970-1989 vintage homes.
• AC compressor cycles continuously to overcome the 65 to 70°F delta between attic and thermostat setpoint.
• Insulation alone slows conduction; air sealing plus insulation also stops the convective leak that pulls hot attic air into the conditioned space.

Spray foam at the roof deck brings the attic into the conditioned envelope. Attic temp drops from 140°F to within ~10°F of indoor temp. Ducts stop radiating. Compressor cycles less. That's the mechanism behind the 15 to 40% savings range.

Refinery corridor heat island (Pasadena specifically)

The EPA cites urban heat-island deltas of 1 to 7°F daytime and 2 to 5°F nighttime vs surrounding rural areas. The Pasadena/Channelview/Deer Park/Galena Park petrochemical corridor likely runs 2 to 4°F hotter on summer afternoons than the regional baseline due to thermal mass from concrete and steel tank farms, reduced tree canopy in industrial zoning, and process heat from flares, cooling towers, and stacks. No single peer-reviewed Pasadena measurement was found in primary literature, so this is a qualitative add layered on the EPA verified delta.

When does spray foam NOT pay back?

Honest counter-cases. Foam is not the right answer for every Pasadena home, and a good contractor will tell you when the answer is no or "do this other thing first."

• You're selling in under 2 years. Realtors don't price foam at full job cost. You won't recover it on resale. Blown-in top-up is the cheaper move.
• Your roof is at end-of-life. If you're 1 to 2 years from a re-roof, wait. Spray foam under decking complicates roof deck work later. Re-roof first, foam after.
• Your AC system is undersized. Foam shrinks the cooling load but won't fix a 2-ton AC trying to cool a 2,500 sq ft house with bad duct design. Get a Manual J load calculation first.
• Your ducts are in a vented attic and badly leaking. Sealing the ducts (Aeroseal or manual) before or with the foam job is often a higher-ROI first step. Don't foam over a 25%-leakage duct system.
• Renters or short-term rentals where you don't pay the electric bill. The math doesn't work without skin in the energy game.

If a salesman walks your attic and tries to close the same day on the most expensive option, get a second opinion. The job is the same job tomorrow.

Reviewed by the Pasadena TX Spray Foam editorial team. Last updated 2026-05-09.