Pricing and planning
What Drives the Price, and What You Get in Writing
Spray foam is priced by board foot: surface area times applied depth. Here is what actually moves the number, and what the written scope has to contain before you sign it.
The on-site assessment is free, and the decision stays yours.
Read this first
Why the price comes after the visit
A price for spray foam is a function of board feet — square feet of surface multiplied by applied depth — plus access, prep, removal of whatever is already there, and how many times the rig has to be repositioned. Two attics with the same floor area can differ by half again on surface area alone, depending on pitch, dormers and how the roof is framed.
That is why the number you get on the phone from anyone is a range, and why ours comes after someone has stood in the space. Depth is measured during application and recorded, which is how the work is checked.
Bring us the building and the numbers you already have. We will tell you the band it is likely to land in on the phone, and put the real figure in writing after the assessment.
The variables
What moves the number
Surface area, times depth
A steep or cut-up roof can carry far more deck area than the footprint suggests. This is the single biggest driver.
System and applied depth
Closed-cell costs more per board foot than open-cell and is usually applied thinner. The assembly decides which, and how deep.
What has to come out first
Existing blown-in or batt insulation, contamination and storm damage each appear as their own line item.
Access and prep
Hose runs, decking, masking, occupied space and how far the rig can get from the work all change the labor on the job.
Prep by others
Electrical, plumbing and mechanical rough-in has to be complete and inspected. Coming back a second time costs money.
Where the building is
Travel appears as a line on the scope. Outside the metro it is a larger share of a small job.
Where we draw the line
A price is a number attached to a scope
A quote that says only "spray foam — $X" leaves everything open to interpretation. Ours names the assembly, the system, the applied depth, the exclusions and the price, so that you can put it next to somebody else’s and compare like with like. A depth on every line is what makes two quotes comparable, and its absence is usually deliberate. The same line items appear whether the job is an attic retrofit, a metal building or a new build priced by the set.
- 01 The assemblyWhich surfaces are being sprayed — roof deck, walls, rim joist, gable ends — and which stay as they are.
- 02 System and depthOpen-cell or closed-cell, and the applied depth in inches. This is the line that makes two quotes comparable.
- 03 ExclusionsWhat sits outside the price: removal, decking, electrical work, drywall repair, anything the scope leaves to others.
- 04 Preparation and accessWhat has to be cleared, who clears it, and what has to be complete before the crew arrives.
How a job runs
One process, three stages
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01
Inspect
You describe the building on the phone, then someone comes out, gets into the space, measures the surface area and looks at what is already there. Free, and the decision stays yours.
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02
Scope
Assembly, system, applied depth, exclusions, preparation and one number, in writing, so you can compare it. We also tell you what has to be cleared or completed first and what has to be vacated.
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03
Install and verify
Masking and isolation, then the spray, with depth checked by gauge as the work goes. We walk the finished work with you against the scope you were given, and clean up before we leave.
Timings vary with scope, access and scheduling. Ask for the current window when you book — we will give you the honest one.
Money questions
Pricing and payment
Spray foam is measured in board feet — area multiplied by applied depth. A rate per square foot of floor hides the depth, and depth is the thing that determines performance. Any number quoted that way is either a guess or a way of avoiding a comparison. If you want the material difference behind the depth, the open-cell and closed-cell guides set it out.
On the phone we can tell you the band your job is likely to land in, which is usually enough to know whether to keep going. The quote itself comes after the on-site assessment, in writing.
Ask when you call and we will tell you what is currently available and on what terms, in writing. We publish terms here only once we can stand behind them on the day you ask.
It is free, and the decision stays yours.
It reduces load, and in most Houston attics it reduces it substantially. We will put a savings percentage or a payback period in writing once we have measured your house. A figure offered before that is a guess.
The floor area of the house is not what we price. We price the area being sprayed (roof deck, walls or floor), the product, the applied depth, access, and any removal of old insulation. Two 2,000 sq ft houses can have very different roof areas and pitches. We measure on site and put the price in writing before anything is ordered.
The federal 25C insulation tax credit ended for work placed in service after December 31, 2025. CenterPoint Energy Houston Electric runs a ceiling and attic insulation incentive for existing homes through its approved contractors. Details are on our financing page.
Free assessment
Get it looked at properly
One visit, a written scope, and a written price. Free, and the decision stays yours.
(832) 737-078748 cities across the eight-county Houston-Galveston region, plus five extended project markets.