BattWiseR-value targets by climate zone, and what it takes to hit them.

How much does it cost to insulate a 1000 sq ft attic in Corvallis, OR?

Blown-in attic insulation in Corvallis, OR
$2,002
1,000 ft² of attic floor · typical range $1,054 – $2,951
Typical total$2.00 per ft² of attic floor$2,002
Range you should see in bidsthree bids on the same scope normally land inside this$1,054 – $2,951
Labor portion45% of the job — this is the part that moves by city$901
Material portion55% — bought at national prices$1,101
Insulation Workers, Floor, Ceiling, and Wall pay near CorvallisBLS does not publish a metro figure for insulation workers, floor, ceiling, and wall near Corvallis, OR, so this is the Oregon state average, SOC 47-2131$61,290/yr
U.S. mean for the same tradeSOC 47-2131$54,740/yr
Versus the national pricetrade pay here runs +12% against the U.S. mean+$102
Climate zone 4BIECC R402.1.3 asks for R-49 in the attic at zone 4. 4,192 heating degree days and 564 cooling degree days is what that zone is standing in for—

Notes

  • Where the number comes from. The national price for blown-in attic insulation is $1.90 per ft² of attic floor — blown-in insulation pricing published for 2026, $1.00–$2.80 per ft². Labor is about 45% of that. Insulation Workers, Floor, Ceiling, and Wall near Corvallis, OR average $61,290 a year against a U.S. mean of $54,740 — a factor of 1.12 — so the labor half is scaled by that and the material half is not. Source: BLS does not publish a metro figure for insulation workers, floor, ceiling, and wall near Corvallis, OR, so this is the Oregon state average, SOC 47-2131.
  • This one falls back to a wider average. BLS did not publish a metro-level wage for this trade near Corvallis, OR, so the figure above is a state average. It is still the right order of magnitude, but a local bid carries more weight here than it would in a large metro where the survey has more responses.
  • Climate zone 4B. IECC R402.1.3 asks for R-49 in the attic at zone 4. 4,192 heating degree days and 564 cooling degree days is what that zone is standing in for.
  • What is in the price: blown fiberglass or cellulose to about R-49, baffles at the eaves, and labor.
  • What is not: removing existing insulation, air sealing before the blow, and any knob-and-tube remediation. These are the lines that turn a $2,002 quote into a $2,503 invoice, so ask about each one before signing.
  • Use this as a bid check, not a quote. It prices an average job in average condition. Difficult access, the state of what is being replaced, the season, and a crew booked out three months all move the real number, and none of them are in a per-unit average.

blown-in attic insulation in Corvallis, OR

$2,002 is the typical number, and three bids on the same scope normally land between $1,054 and $2,951.

That is $102 more than the same job priced at the national average.

Why the city changes the number

About 45% of this job is labor — $901 of the $2,002 above. Labor is the only part that moves locally; a bundle of material costs what it costs wherever it is nailed down.

Insulation Workers, Floor, Ceiling, and Wall near Corvallis average $61,290 a year, against a U.S. mean of $54,740. That is a factor of 1.12, so the labor half is scaled by it and the material half is not.

Source: BLS does not publish a metro figure for insulation workers, floor, ceiling, and wall near Corvallis, OR, so this is the Oregon state average, SOC 47-2131.

What the quote should include

Climate zone 4B

The lines that turn a quote into an invoice

Ask about each of them before you sign. On a job this size they are the difference between $2,002 and something a quarter higher.

Use it as a bid check, not a quote

This prices an average job in average condition. Access, the state of what is being replaced, the season, and a crew booked out three months all move the real number, and none of them are in a national average.

If a bid lands outside $1,054 – $2,951, that is not automatically wrong — but it is the question worth asking out loud.

Nearby sizes

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