Blown-in insulation typically costs $1-$3 per sq. ft. installed, while rolls or batts run about $1-$2.50 per sq. ft. for an accessible attic. For a 1,000-sq.-ft. attic, that puts many projects between $1,000 and $3,000; insulation type, target R-value, removal needs, and access drive the quote.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Blown-in, installed | $1,000 | $2,000 | $3,000 | 1,000 sq. ft.; standard attic access |
| Rolls or batts, installed | $1,000 | $1,750 | $2,500 | 1,000 sq. ft.; open, accessible framing |
| Blown-in per sq. ft. | $1 | $2 | $3 | Material and installation |
| Rolls or batts per sq. ft. | $1 | $1.75 | $2.50 | Material and installation |
Blown-in and roll insulation prices for a 1,000-square-foot attic
Blown-in fiberglass or cellulose generally costs $1-$3 per sq. ft. installed. Fiberglass rolls and batts commonly cost $1-$2.50 per sq. ft. when installers can work in an open attic with regular joist spacing. Higher-end materials, difficult access, and local labor rates can push either method above these ranges.
For the same attic and similar R-value, rolls can cost less in open bays, while blown-in insulation often suits irregular or obstructed spaces. A typical estimate assumes an existing attic that does not need extensive cleanup, standard-grade material, and no major air-sealing or electrical work. Assumptions: 1,000 sq. ft., ordinary access, standard materials, and U.S. midmarket labor rates.
What the insulation quote includes for materials and labor
Quotes may combine material, installation, equipment, and preparation into a single rate. The breakdown below shows common allocations for a 1,000-sq.-ft. job; actual line items depend on the contractor and whether old insulation must be removed.
| Quote item | Blown-in range | Rolls or batts range | Typical scope |
|---|---|---|---|
| Materials | $400-$1,200 | $450-$1,100 | Fiberglass or cellulose, roughly $0.40-$1.20 per sq. ft. |
| Labor | $350-$900 | $400-$1,000 | Installation and basic fitting |
| Equipment | $75-$250 | $0-$100 | Blower rental or job equipment |
| Prep and protection | $100-$350 | $100-$400 | Vent baffles, walkway protection, and masking |
| Removal and disposal | $1-$2 per sq. ft. | $1-$2 per sq. ft. | Often an added charge when old insulation is present |
Removal is usually a separate expense, not part of the basic installed rate. Ask whether the quote includes air sealing, hatch insulation, baffles, cleanup, and disposal so competing bids cover the same work.
How R-value and attic layout change the price
Adding insulation to reach R-49 or R-60 uses more material than a basic R-30 layer, and the installed price can rise by roughly 15%-40%, depending on the starting depth and product. In colder climate zones, local recommendations may call for more insulation than in warmer regions. The installer should measure existing insulation before calculating the top-up.
Blown-in material can fill around joists, pipes, and irregular corners without cutting individual pieces. Rolls need accessible, consistent-width bays; tight framing or many obstructions can add fitting time. For roll insulation, closely spaced bays or numerous obstacles can add 10%-25% to labor compared with a clear, open attic. A roof slope, low clearance, or narrow hatch may also affect the method and price.
Which installation choice can reduce the attic budget
For a clean attic with exposed, evenly spaced joists, rolls or batts may be the lower-cost option because they require no blower setup. For an attic with wiring, ducts, or irregular bays, blown-in material can reduce cutting and gaps; paying slightly more for installation may help achieve more even coverage.
Compare bids at the same target R-value and insulation depth, not just by material name. If existing insulation is dry, clean, and undamaged, adding a compatible top layer may cost less than full removal. Contractors should check moisture, pest contamination, and ventilation before recommending reuse.
Installer hours and attic access affect labor charges
A straightforward 1,000-sq.-ft. attic may take a two-person crew about 4-8 hours, including setup and cleanup. Blowing material can cover an open area quickly, but carrying a long hose through a difficult route or protecting finished rooms adds time. Roll installation can take longer where installers must cut around wiring, framing, and fixtures.
Labor rates often fall around $50-$100 per worker-hour, though contractors usually quote the complete job rather than hourly billing. Ask how the crew will protect recessed lights, maintain ventilation channels, and avoid covering junction boxes. Those details can prevent safety problems and reduce costly rework.
Regional labor rates shift blown-in and roll estimates
Prices in major coastal cities and high-cost metro areas can run about 15%-30% above national midmarket estimates. Rural markets may be 5%-15% lower, but limited contractor availability or travel distance can erase the savings. Cold-weather regions may also have higher totals because projects target greater R-values or require more material.
Regional comparisons are most useful when the scope and R-value match. A low quote that excludes air sealing or removal is not directly comparable with a complete installation bid. Request the material brand or type, depth, coverage area, and disposal terms in writing.
Old insulation removal adds $1-$2 per square foot
Removing old attic insulation commonly adds $1-$2 per sq. ft., or about $1,000-$2,000 for 1,000 sq. ft. Contaminated material, rodent waste, difficult access, or special disposal requirements can increase the bill. Some companies charge a minimum fee for small jobs even when the area is far below 1,000 sq. ft.
Air sealing around attic penetrations may add roughly $300-$1,000 for a typical project, depending on the number of gaps and the work required. Confirm whether removal and air sealing are necessary before accepting an all-in replacement price. If only a small area is damaged, ask for a separate repair estimate.
Three attic quotes show when each method pays off
A 600-sq.-ft. open attic brought up to a modest top-up level might cost $600-$1,500 with blown-in insulation or $600-$1,300 with rolls. A 1,000-sq.-ft. attic targeting R-49 might run $1,500-$3,000 blown-in or $1,300-$2,500 with rolls in open bays. These examples assume no removal and ordinary access.
For a 1,500-sq.-ft. attic with irregular framing and several ducts, blown-in work might total $2,250-$4,500, including added setup or fitting allowances; rolls could reach $2,250-$3,750 where cutting and placement are labor-intensive. Request at least two itemized estimates that state square footage, target R-value, removal, and included prep work.