Attic insulation cost in Decatur, AL
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (1,000 sq ft)
- $960 – $3,850
- Per sq ft
- $0.95 – $3.85
- before permit
- Versus US midpoint
- −4%
- US $2,500
- Rank of 300 metros
- #183
- 1 = most expensive
Attic insulation in Decatur, AL usually costs $960 to $3,850 for 1,000 sq ft. That works out to about $0.95 to $3.85 per sq ft before permits. Compared with the national midpoint that is $100 less. Building materials run about 4% below the US average here (BEA goods price index 96.4).
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Estimated cost for 1,000 sq ft in Decatur, AL, standard level
$1,800 to $3,000
About $1.80 to $3 per sq ft before permits. Labor is about 36% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $1,100 | $1,950 |
| Labor | $710 | $1,000 |
| Permits and fees | $0 | $0 |
| Total | $1,800 | $3,000 |
Cost breakdown for 1,000 sq ft in Decatur, AL
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $480 | $1,550 | $2,600 | 64% |
| Labor | $480 | $860 | $1,250 | 36% |
| Permits and fees | $0 | $0 | $0 | 0% |
| Total | $960 | $2,400 | $3,850 | 100% |
Why Decatur prices look the way they do
The wage side of the estimate leans on insulation workers, floor, ceiling and wall, who do 80% of the hours on a typical job. Their local median is $23.43 an hour. Add the other trades involved and the blended wage index for Decatur is 0.95 (US = 1.00), which puts labor at 36% of the total. BLS does not publish this trade for the metro, so we used the Alabama statewide median.
Materials are scaled with BEA's regional price parity for goods. Decatur is at 96.4 against 100 for the US, so a materials line of $1,600 nationally becomes $1,550 here (midpoint, 1,000 sq ft). Permits follow the all-items index of 87.2: $0 to $0.
Data note: 80% of the labor weighting for this project uses a statewide median because BLS has no published metro figure for that trade in Decatur. The wage table below marks each row.
What local crews earn in Decatur
The labor line is built from BLS wage data, one trade at a time. This job draws on 2 trades. We compare each trade's local median with the US median, weight the ratios by how much of the job each trade does, and apply the blend to the national labor cost. For Decatur the blend is 0.95.
Insulation workers, floor, ceiling and wall (47-2131) carry 80% of the labor weighting. BLS does not publish this trade for the Decatur metro, so we used the Alabama statewide median: $23.43 an hour against $23.62 for the US. The middle half of them earn between $20.35 and $27.14 an hour.
For construction laborers (47-2061, weighted 20%) the local median is $18.11 an hour, which is 20% below the national $22.66. The middle half of them earn between $15.52 and $23.05 an hour. BLS counts 690 of them working in the area, 112.7 for every 10,000 jobs (US: 70.5), so the local bench is deeper than average.
A quick sensitivity check: moving the lead trade (insulation workers, floor, ceiling and wall) from the median to the 75th percentile wage adds about $110 to the midpoint estimate; the 25th percentile takes off about $95. That is a swing of roughly 3.9% to 4.7% of the total, which is useful for judging whether a bid reflects wages or something else, such as scope or margin.
Decatur has 61,240 jobs in total (BLS, May 2025), ranking 283rd by size among the 300 metros on this site.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Insulation workers, floor, ceiling and wall (47-2131) | 80% | $20.35 | $23.43 | $27.14 | $23.62 | 0.99 | state |
| Construction laborers (47-2061) | 20% | $15.52 | $18.11 | $23.05 | $22.66 | 0.80 | metro |
| Blended | 100% | 0.95 | |||||
Decatur: what basic, standard and premium work costs
The cited range is split into basic, standard and premium bands, then scaled to Decatur. Bands overlap, because plenty of standard jobs cost as much as a light premium one. Sizes run from small attic (600 sq ft) to large attic (1,800 sq ft).
Basic
$960 to $2,100
Blown-in fiberglass or cellulose to code R-value
Standard
$1,800 to $3,000
Higher R-value with air sealing around fixtures
Premium
$2,700 to $3,850
Spray foam or heavy air sealing, hard-to-reach attic
| Size | Basic | Standard | Premium |
|---|---|---|---|
| small attic (600 sq ft) | $580 – $1,250 | $1,100 – $1,800 | $1,600 – $2,300 |
| average attic (1,000 sq ft) | $960 – $2,100 | $1,800 – $3,000 | $2,700 – $3,850 |
| large attic (1,800 sq ft) | $1,750 – $3,800 | $3,300 – $5,350 | $4,850 – $6,900 |
What nearby projects cost in Decatur
Jobs that often go together with attic insulation are priced below at their usual sizes, using the same Decatur wage and price inputs. Compared with national midpoints, window replacement comes out highest (−7%) and roof replacement lowest (−12%); the gap comes from the trades each job uses.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Roof replacement | 2,000 sq ft of roof | $5,300 – $11,100 | −12% |
| Metal roof | 2,000 sq ft of roof | $8,600 – $28,900 | −12% |
| Vinyl siding | 2,100 sq ft of wall | $7,500 – $22,500 | −11% |
| Window replacement | 10 windows | $4,150 – $14,000 | −7% |
| Gutters | 160 linear ft | $1,150 – $3,800 | −10% |
How Decatur compares
Same job, same size (1,000 sq ft), priced for the nearest metros. Huntsville is the priciest of the group at $2,500. Tuscaloosa is the cheapest at $2,400.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Decatur, ALthis page | $960 – $3,850 | $2,400 | |
| Huntsville, AL30 miles | $1,000 – $4,000 | $2,500 | +5% |
| Birmingham, AL75 miles | $960 – $3,850 | $2,400 | level |
| Tuscaloosa, AL105 miles | $960 – $3,850 | $2,400 | level |
| Chattanooga, TN105 miles | $970 – $3,850 | $2,400 | level |
| Nashville, TN115 miles | $1,000 – $4,000 | $2,500 | +5% |
| Alabama (statewide) | $960 – $3,850 | $2,400 | level |
| United States | $1,000 – $4,000 | $2,500 | +4% |
Out of the 300 metros we cover, Decatur ranks #183 for the cost of this job (#1 is the most expensive). Statewide, Decatur is 0% above the Alabama figure.
Elsewhere in Alabama
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Birmingham, AL | 520,290 jobs | $960 – $3,850 | $2,400 | level |
| Huntsville, AL | 266,650 jobs | $1,000 – $4,000 | $2,500 | +5% |
| Mobile, AL | 172,550 jobs | $950 – $3,850 | $2,400 | level |
| Montgomery, AL | 165,550 jobs | $960 – $3,850 | $2,400 | level |
| Tuscaloosa, AL | 108,460 jobs | $960 – $3,850 | $2,400 | level |
| Daphne, AL | 87,120 jobs | $960 – $3,850 | $2,400 | level |
Metros of a similar size
Big cities and small ones price differently, so here is Decatur against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Santa Fe, NM | 61,770 jobs | $960 – $3,850 | $2,400 | level |
| Dothan, AL | 60,720 jobs | $950 – $3,800 | $2,400 | −1% |
| Pueblo, CO | 61,780 jobs | $990 – $3,900 | $2,450 | +2% |
| Sheboygan, WI | 60,630 jobs | $990 – $3,900 | $2,450 | +2% |
Specs and site conditions that change a Decatur bid
Type of insulation
Blown-in is $0.90-$2.40 per sq ft and loose-fill is $1.00-$2.50 installed; spray foam costs more (HomeGuide).
Job size
Small attics start around $500 and large ones go up to $6,000 (HomeGuide).
Air sealing and fixture damming
Sealing gaps and damming around recessed lights are part of what moves the price within a type.
Get 3 local quotes
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Attic insulation in Decatur: your questions
+How much does it cost to insulate an attic in Decatur?
For 1,000 sq ft, expect $960 to $3,850 in the Decatur area. A standard-spec job lands at $1,800 to $3,000. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for attic insulation in Decatur?
About $0.95 to $3.85 per sq ft for materials and labor, plus $0 to $0 for the permit if one is needed. The US range is $1 to $4.
+Is attic insulation cheaper in Decatur or Huntsville?
Huntsville is 30 miles away. The midpoint for 1,000 sq ft there is $2,500, which is 5% more than Decatur ($2,400). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Decatur?
About 36% at the midpoint, or $860 out of $2,400. Materials are 64% and permits 0%. Nationally, labor is 36%.
+What would average attic (1,000 sq ft) cost in Decatur?
$960 to $3,850. Pick a different size in the estimator above to get your own number.
+Does attic insulation need a permit in Decatur?
Often, but rules are set by your city or county building office, so call before you hire. Budget $0 to $0 for fees in the Decatur area (our national range of $0 to $0 scaled by the local price level).
+Is Decatur expensive for attic insulation compared with the rest of Alabama?
Decatur is 0% above the Alabama statewide estimate ($2,400 at the midpoint). We cover 9 metros in Alabama; see the state page to compare them.
+What do insulation workers, floor, ceiling and wall earn in Decatur?
BLS has no published metro figure here, so we use the statewide median of $23.43 an hour, compared with $23.62 nationally. The 25th to 75th percentile range is $20.35 to $27.14.
+What do basic and premium attic insulation work cost in Decatur?
For 1,000 sq ft, basic work runs $960 to $2,100 and premium work $2,700 to $3,850. Basic means: blown-in fiberglass or cellulose to code R-value. Premium means: spray foam or heavy air sealing, hard-to-reach attic.
Attic insulation near Decatur
Where these numbers come from
Base prices are national ranges from the sources below. We scale labor by local BLS wages, materials by BEA goods prices and permits by the BEA all-items price level. Full method on the methodology page.
- HomeGuide: How Much Does Attic Insulation Cost? (2026) (accessed November 4, 2026)
- BLS Occupational Employment and Wage Statistics, May 2025
- BEA Regional Price Parities, 2024
Note on derived figures: Materials = installed price minus HomeGuide's $0.50-$1.30 per sq ft insulation labor, matched low-to-low and high-to-high.