Free tool for insulation contractors
Attic Insulation Calculator (Blown-In)
Enter the attic area, the R-value that's there now and the R-value you're targeting. The calculator works out the depth and bags needed, and prices air sealing, baffles and install time.
Estimate
before sales tax$1,687.30
before sales tax$1,687.30
Added depth: 10.9 inBags: 32
| Labor | |
| Air seal top plates, chases and penetrations6 hr × $65.00 | $390.00 |
| Install rafter vent baffles2 hr × $65.00 | $130.00 |
| Blow in 10.9 in of cellulose to R-49 (1,200 sq ft)4.5 hr × $65.00 | $292.50 |
| Materials | |
| Spray foam and fire-rated sealant1 lot × $102.00 | $102.00 |
| Rafter vent baffles20 ea × $1.92 | $38.40 |
| Cellulose insulation32 bag × $19.20 | $614.40 |
| Equipment | |
| Blower machine1 day × $120.00 | $120.00 |
| Total before tax | $1,687.30 |
- Check bag coverage charts for the exact product, and confirm there's no knob-and-tube wiring before covering.
Labor at $65/hr, 20% markup on materials, equipment and disposal. Material prices and crew speeds are starting values; set your own in the app.
Send this as a quote from the driveway
In Curbsend, this calculator runs with your own prices and speeds, turns the result into an itemized quote with good, better and best options, and texts it to the customer to approve and pay a deposit from their phone.
Start 7-day free trialNo card needed.
Pricing tips for insulation
- Air sealing before blowing insulation is where most of the comfort gain comes from. Offer it as the better option.
- Check for rebates and utility programs in your area. Mentioning them can close the job.
- Note any old insulation removal as its own line. It's slow, dirty work.
Starting values this calculator uses
Material costs and crew speeds vary by market and by crew. These are the defaults; in the app you replace them with your own, and every estimate uses your numbers.
- Cellulose bag$16/bag
- Cellulose bag yield35 cu ft
- Cellulose R per inch3.5 R/in
- Fiberglass bag$38/bag
- Fiberglass bag yield60 cu ft
- Fiberglass R per inch2.5 R/in
- Blowing speed400 sq ft/hr
- Blower machine$100/day
- Air sealing6 hr
- Foam and sealant$85
- Baffle$1.6/ea
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