The attic
One row per section. Length × width is the floor. Existing R and target R decide the inches — and the bags. Check vaulted when that section cannot take loose-fill; it stays in the area split but buys nothing.
The job
R-per-inch and bag yield follow common product charts as a time-and-material budget you can edit — not a manufacturer coverage table, an energy-code requirement, or a finding that any attic is airtight, permitted, or rebate-eligible. Deeper fills multiply blow hours on that section because the bags have to be hauled and raked.
Your costs
Payroll burden covers employer taxes, respiratory workers’ compensation, liability insurance, and paid time off. A blower paid $32 often costs more than $41 in the attic. Underestimating that is how a $1.50-a-foot special loses money.
Hand the customer a proposal
The price above is for you. This is the page you print or save as a PDF and give to the customer — your details, their details, the scope, the deposit split, and a line for them to sign. Your business details are saved on this device so you only type them once; the customer’s details are never saved.
Everything on the printed page is text you typed or a number this calculator worked out. It contains no warranty, lien, or cancellation wording — those depend on your jurisdiction and your contract, and this tool is not the place to invent them.
Your quote
- Attic / blowable / bags
- Inches added (area-weighted)
- R added (area-weighted)
- Blow hours
- Air-seal hours
- Baffles + removal
- On-site hours
- Travel hours (round trip)
- Total labor hours
- Loaded labor cost
- Bag material
- Baffles + air-seal parts
- Add-on parts
- Dumpster + trip
- Overhead
- Total cost
- Profit
- Price per attic sq ft
- Effective hourly rate
- Walk-away price
Where the attic area goes
Transparent arithmetic from your own inputs. The starting R-per-inch, bag yields, and hours are common ballpark numbers, not a manufacturer coverage chart, an energy-code table, or a guarantee — time your own crews and replace them. This is not a finding that any attic is airtight, permitted, or rebate-eligible.
Common questions
What does this insulation estimate include?
The price adds up blown-in bags from the R-value you need to add across each attic area, baffles, air-sealing parts for each penetration, an optional removal-and-haul line for existing insulation, a chosen add-on kit, a dumpster when removal is selected, setup and travel time, a trip fee, overhead, and your target margin — all from the areas, product, and rates you enter, not a flat price list.
Why does bag count come from the R-value gap instead of the floor area?
Bags are driven by how many inches need to go in, which is the target R-value minus what is already there, converted through the product’s R-value per inch. An attic already at a high R-value going up a little is a smaller truckload than the same square footage starting low and going to the same target, even though a flat per-square-foot price would charge them the same.
Does it handle vaulted ceilings and areas already at or above target?
Yes. A vaulted area is counted in the total attic area shown but is excluded from bags and blow hours, since it is not being topped up. An area already at or above its target R-value adds zero bags and zero blow hours for that area as well — both still appear in the takeoff so you can see they were considered.
Is my data uploaded anywhere?
No account and no network requests — the calculator runs entirely in your browser. Usage counts are anonymous tallies of which features were used, stored locally, and a share link encodes only the quote fields in the page’s URL hash rather than sending anything to a server.
What’s the difference between the quote price and the walk-away price?
The quote price already includes your target margin on top of labor, materials, the trip fee, and overhead. The walk-away price is the total cost underneath it — bags, baffles, air sealing, removal, labor, and the trip — the point below which the job stops being profitable at all.
Does this check energy codes, manufacturer coverage charts, or rebate eligibility?
No. This is not a manufacturer, energy-code, rebate, or insurance inspection. R-value per inch, bag yield, and blow hours are ballpark shop figures you can replace with your own product’s coverage chart; whether a job qualifies for a utility rebate or meets a local energy code is a separate question this tool does not answer.
How is this different from a paid platform like FieldCamp?
FieldCamp is a paid job-management platform for scheduling crews and running job costing across every job an insulation business does. This calculator connects to nothing: you price one attic in your browser, with no account to make, cancel, or pay for. See this calculator vs. FieldCamp for which job fits which situation.
Why not just quote a flat price per square foot?
Because two attics of the same square footage can need a different truckload of bags, depending on the R-value delta and whether air sealing or removal is part of the scope. See this calculator vs. a flat price-per-square-foot special for where a per-foot rate usually gets it wrong.