What Spray Foam Costs in Anna, TX
What spray foam actually costs around Anna in 2026. These are honest local ranges, not quotes — foam is priced by the board foot (a square foot at one inch thick), so the building's size, the foam type and the thickness the assembly needs decide the number. Every serious quote starts with a look at the actual building.
| Service | Typical price |
|---|---|
| Open-cell foam, per board foot | $0.45 – $0.75 |
| Closed-cell foam, per board foot | $1.00 – $1.60 |
| Attic retrofit, typical single-family home | $3,000 – $6,500 |
| 30x40 metal shop, closed cell | $3,000 – $6,000 |
| Full barndominium shell | Quoted from plans |
| New-construction envelope, custom home | $8,000 – $18,000 |
| Old insulation removal, per square foot | $1 – $2 |
| Minimum mobilization | $1,500 – $2,000 |
Why the per-inch price differs so much
Open cell and closed cell are different products doing different jobs. Open cell expands a hundredfold and fills a roof deck affordably; closed cell is dense, structural and moisture-blocking, and uses far more material per inch. Comparing bids means comparing like for like: which foam, how many inches, which assemblies — a cheap bid that quietly specs thinner foam is not a cheap bid.
The attic math
A typical attic retrofit here lands between $3,000 and $6,500 — real money. What it buys is permanent: an attic inside the envelope, upstairs rooms that hold temperature, an AC that cycles instead of grinding, and a summer bill that stops climbing every year the ductwork ages. Against a 30-year run of Texas summers, the attic is the best insulation dollar a corridor homeowner can spend.
Budgeting a barndominium
If you are planning a barndo or shop, put the foam line in the budget from day one — closed cell on the shell is not the place the project saves money, because everything inside depends on it. Quoting from the plans is free, locks the number early, and slots the spray cleanly into the build schedule instead of becoming the thing the drywall waits on.