Blown-in insulation costs can vary significantly based on material, depth, and labor rates. As of 2025, the average per-square-foot material cost ranges from $0.80 to $1.25, while the typical installed cost (labor + material) is between $1.50 and $3.00 per square foot. For a whole-house attic (1,000 sq ft at R-38), costs range from $1,500 to $3,000. These figures are crucial for construction professionals aiming to provide accurate estimates and avoid overestimating costs.
• Loose-fill cellulose made from recycled paper
• Loose-fill fiberglass engineered from spun glass fibers
• Mineral wool products for enhanced fire resistance
All these materials are installed using a blowing machine, effectively filling attic floors, wall cavities, and structural voids.
1. Material Type: Cellulose is generally 10% less expensive than fiberglass, while mineral wool is 15% more costly.
2. Required R-Value: Higher R-values in colder zones increase material volume by up to 30%.
3. Square Footage & Accessibility: Open attics are easier to insulate, reducing labor hours.
4. Prep & Air-Sealing: Additional tasks like vent blocking can add $0.25 to $0.40 per sq ft.
5. Regional Labor Rates: Urban areas may see a 20% increase due to higher wages.
6. Disposal of Old Insulation: Removing old materials can cost $1 to $2 per sq ft.
Manual calculations can lead to errors. Using AI-driven tools like CountBricks can automate the process, providing real-time estimates based on live supplier data and recent project benchmarks.
A contractor upgraded a 2,400 sq ft Colonial's attic using CountBricks. The project required 110 bags of cellulose at $14.85 each, with labor costs at $52/hour. The total cost was $2,947.42, including prep materials and cleanup.
• Average heating savings in Climate Zone 5: 15% to 20%
• Payback period on a $3k install: 3.2 to 4.1 years
• Increased resale value: Energy-efficient upgrades can raise home value by up to 2%
Visit CountBricks.com to start a voice session and receive a dynamic estimate. Adjust R-values or materials and see immediate pricing updates.
• Schedule installations during supplier promotions to save 5% to 8% on materials.
• Combine air-sealing with insulation for maximum energy rebates.
• Opt for cellulose with borate treatment for pest resistance.
• Use photo annotation to highlight blocked vents before installation.
• Re-run estimates on installation day to ensure accurate pricing.
Does blown-in insulation settle over time? Yes, typically 10% for cellulose and 3% to 4% for fiberglass. Calculators account for this to maintain R-value.
Can I add new loose-fill over old batt insulation? Yes, existing material R-value is factored in to determine additional needs.
Do I need vapor barriers? Local codes vary. CountBricks flags requirements based on jurisdiction.
Accurate insulation cost estimation is essential for construction professionals. Utilize tools like CountBricks to streamline the process and provide precise, real-time quotes. Visit CountBricks.com to start your estimate today.
CountBricks offers a transparent workflow for construction professionals, turning estimates into invoices efficiently.
1. Voice Capture: Contractors speak dimensions, and CountBricks sketches the space instantly.
2. Live Takeoff Verification: On-screen models highlight joists and vents for accurate coverage.
3. Dynamic Pricing: Real-time updates from local suppliers ensure accurate estimates.
4. Branded Quote Generation: A polished PDF with scope and savings is sent for e-signature.
5. One-Click Conversion to Invoice: Quotes convert to invoices with payment milestones.
• Eliminates spreadsheet errors with automated calculations.
• Faster approvals with clear, data-backed cost logic.
• Flexibility to modify materials or R-values during client discussions.
• Unified documentation for compliance and warranty claims.
A Rochester remodeler reduced bid time from 2 hours to 18 minutes using CountBricks, closing 11 of 14 projects worth $41,600.
Visit CountBricks.com to start a voice session and see a comprehensive insulation estimate come to life.
