In this guide
Measure the work, not just the floor plan
The floor area of a home is not the same as the area being insulated. Identify the walls, roof slopes, rim joists or floors involved. Note approximate surface dimensions and describe areas that are difficult to reach. If you only have a rough estimate, label it as approximate.
Ask for an itemized scope
Request the proposed product, application location, specified thickness or performance target, preparation work, removal, protection and cleanup. Ask whether required protective coverings and inspection coordination are included. A low headline number can hide a different scope.
Compare like-for-like proposals
Use the same drawings and assumptions for each discussion. Ask what could change after a site visit and how changes would be approved. This site does not publish a universal per-square-foot price or promise a specific saving; the project needs an individual assessment.
Compare the scope, not just the total.
Two totals are useful only when you know what each one includes. Use this checklist to organize your project conversation. It is not a price list or a ranking of contractors.
| Scope item | Ask for | Why it matters to your request |
|---|---|---|
| Surfaces | Walls, roof slopes, floors or rim joists included | A home’s floor area alone does not describe the work. |
| Product & assembly | Product name, intended location and specified depth or performance | Different assumptions produce different scopes. |
| Existing conditions | What needs assessment, removal or repair first | Preparation should be clearly included or excluded. |
| Access & protection | Access restrictions, occupied areas and protective work | These details belong in the project brief. |
| Completion | Cleanup, documentation and inspection responsibilities | Define what the finished scope includes. |
| Changes | How measurements and scope changes are approved | An initial discussion is not a binding installation agreement. |
What would your scope include?
Tell us the ZIP code, surfaces and approximate dimensions. Request a project review without uploading files.
Get Your Free Spray Foam QuoteStart a measurement worksheet.
If a proposal uses board feet, one board foot describes one square foot of material at one inch of thickness. This worksheet only illustrates that volume calculation. It does not select an installation thickness, determine code compliance or calculate a price.
Enter both measurements to calculate an illustrative volume.
Surface area × depth in inches = board feet. For different depths, calculate each surface separately. No measurements are submitted or stored by this worksheet.
Measurement background: Johns Manville — board-foot calculation. This technical reference is not a product recommendation.
Questions before requesting a price.
Why isn’t there one fixed price per square foot?
Surface area is only one part of the scope. The product specification, depth, access, preparation and completion requirements also need to be defined. We do not present another website’s published prices as a local quote.
Is the house’s floor area enough for an estimate?
It is a starting detail, not the quantity of every surface to insulate. Identify the actual walls, roof slopes, floors or other surfaces involved, and label rough measurements as approximate.
What if I don’t know whether I need open or closed cell?
Choose “Not sure yet” for the area if needed, describe the space and explain what you want to improve. The materials guide explains the questions to discuss with the project professional.
Can contractors and developers request an estimate here?
Yes. Select new construction or commercial / multi-unit and describe the scope and schedule. This version accepts text details only; there is no file-upload step.
Keep exploring
What goes into a quote? · Open cell versus closed cell · New construction planning
Get Your Free Spray Foam Quote