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Insulation Calculator
East Tennessee attics generally target R-38 to R-49. Enter the area and target R-value to size the material.
Your numbers
Bags of blown-in
30 bags
- Area
- 1,200 sq ft
- Target
- R-38
- Bags
- 30 bags
- Settled depth
- 13.5 in
- Estimated material cost
- $900 – $1,350material only, labor extra
- Waste & gas charge (10%)
- $90 – $135material overage, cuts & fuel
- Total with waste & gas
- $990 – $1,485
- Air-seal top plates, can lights, and the attic hatch before adding insulation — sealing first is what makes the R-value actually perform.
- A 10% waste & gas allowance is added to every estimate to cover material overage, cuts, and fuel to and from the job site.
Quantities and cost ranges are planning ballparks for materials only — labor is quoted separately. A 10% waste & gas allowance is already included in the total. Verify measurements on site.
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