When it comes to improving your building's energy efficiency, insulation plays a key role. Blown-in insulation is a popular choice for homeowners and businesses: it gives excellent coverage and fits into tight spaces. But how much does it cost? This guide walks through the factors that affect blown-in insulation prices and why it's often worth the investment, so you know what to expect and how to get the best value.
What is blown-in insulation?
Blown-in insulation is a loose-fill insulation made of small particles of fiberglass, cellulose or mineral wool. The particles are blown into attics, walls and other spaces with special equipment, filling gaps and hard-to-reach areas to create a tight thermal barrier.
It's faster and usually less disruptive than traditional batt insulation, and it adapts well to irregular spaces, which makes it a favorite for retrofits and new construction alike.
What affects the price?
1. Type of insulation material
- Fiberglass: affordable and fire-resistant. A lower R-value per inch, but widely used.
- Cellulose: recycled paper treated for fire resistance. A higher R-value and eco-friendly.
- Mineral wool: costs more, with excellent soundproofing and moisture resistance.
2. Area size and accessibility
Larger spaces need more material and labor. Attics that are hard to reach take more time, which can add to the cost.
3. Depth and R-value needed
Higher R-values need thicker layers, and meeting or beating local building code may mean more material.
4. Labor and equipment
Professional installation is recommended for blown-in insulation. Labor costs vary by region and company, and South Florida prices reflect local demand for skilled installers.
5. Removing old insulation
If old insulation is wet, moldy, flattened or pest-damaged, it should come out first. Removal and disposal add to the total. See insulation removal.
6. Additional services
Air sealing or a moisture barrier installed at the same time improves performance but raises the overall price.
How much does blown-in insulation cost?
On average, blown-in insulation costs about $1 to $3 per square foot, depending on the factors above:
For a typical 1,000 sq ft attic, expect roughly $1,000 to $3,000. Prices vary with your home and location; your free inspection gives you an exact number.
Is blown-in insulation worth the cost?
Energy savings
Less heat gets in, so your AC runs less. In South Florida's heat, the savings on electric bills often pay back the cost over time.
More comfort
Steadier indoor temperatures and fewer hot spots, all year.
Eco-friendly
Lower energy use means a smaller carbon footprint, and cellulose is made from recycled material.
Higher property value
Good insulation is a selling point that shows a well-kept, efficient home.
Quick installation
Most attics are done fast, with minimal disruption.
Lasts for decades
Installed properly, it needs little maintenance.
Tips to save on blown-in insulation
- Get quotes from local installers and compare.
- Ask about utility rebates or incentive programs.
- Seal air leaks before insulating for better results.
- Choose the material that fits your budget and goals.
- Insulate during a renovation to save on labor.
The bottom line
Blown-in insulation is a cost-effective way to improve energy efficiency. Look at long-term savings and comfort, not just the upfront price. If you want lower energy bills and a more comfortable home, it's a smart choice, and a local pro can give you a detailed estimate.
Learn more about our blown-in attic insulation service, or compare it with spray foam.