Discover the Best Types of Blown Insulation for Attics: Average Price Revealed!
Introduction
Investing in blown in insulation is one of the smartest moves homeowners can make to boost energy efficiency and comfort. Whether you’re tackling an attic retrofit or insulating a new build, understanding the average price and performance of different blown insulation materials helps you make informed decisions. In this guide, we’ll reveal typical cost ranges, explore popular insulation types, and unpack the factors that drive price variations—so you can find the best solution for your budget and climate.
H2: Types of Blown In Insulation for Attics and Their Average Prices
Blown in insulation comes in several varieties, each with unique attributes, R-values (the measure of thermal resistance), and price points.
• Fiberglass Loose-Fill
– Composition: Fine glass fibers treated for fire resistance
– Average Cost: $0.50–$1.50 per sq. ft. installed
– R-Value: Approximately R-2.2 to R-2.7 per inch
– Pros: Budget-friendly, non-combustible, moisture-resistant
– Cons: Slightly lower R-value, may settle over time
• Cellulose Loose-Fill
– Composition: Recycled paper treated with borate fire retardants
– Average Cost: $1.00–$2.00 per sq. ft. installed
– R-Value: Approximately R-3.2 to R-3.8 per inch
– Pros: Eco-friendly, excellent air sealing, high recycled content
– Cons: May absorb moisture if not properly dried
• Mineral Wool (Rock or Slag Wool)
– Composition: Molten rock or industrial slag spun into fibers
– Average Cost: $1.50–$3.00 per sq. ft. installed
– R-Value: Approximately R-3.7 to R-4.2 per inch
– Pros: Superior fire resistance, sound dampening, moisture-resistant
– Cons: Higher upfront cost
• Spray-Applied Foam (Open-Cell or Closed-Cell)
– Composition: Polyurethane components that expand on application
– Average Cost: $1.50–$3.50 per sq. ft. installed
– R-Value: R-3.5 to R-6.5 per inch (depending on cell type)
– Pros: Air barrier, moisture barrier (closed-cell), prevents mold growth
– Cons: Highest cost, requires professional installers
H2: Factors That Affect the Average Cost of Blown In Insulation
Several variables influence how much you’ll pay for blown in insulation:
• Material Selection
Higher-R-value products or specialty fibers raise material costs. Fiberglass sits at the low end, spray foam at the high end.
• Attic Size and Configuration
Larger or irregularly shaped attics require more material and labor. Multiple roof pitches, knee walls, and tight corners add complexity.
• Existing Insulation Removal
If old insulation must be gutted before installation, labor and disposal fees increase your total.
• Installation Method
Dense-pack techniques require slower, higher-pressure application and cost more than loose-fill blow-in.
• Regional Labor Rates
Labor costs vary by geography. Urban areas with higher living costs tend to charge more per man-hour.
• Accessibility
Easy attic access cuts labor time. Crawl spaces, steep rooflines, or blocked entrances slow work and add to the price.
H2: Comparing Average Prices: Cellulose vs. Fiberglass vs. Mineral Wool Blown In Insulation
When you weigh upfront investment against performance:
• Cheapest Option: Fiberglass Loose-Fill
– Avg. Cost: $0.50–$1.50/sq. ft.
– Best for tight budgets and moderate climates
• Mid-Range Option: Cellulose Loose-Fill
– Avg. Cost: $1.00–$2.00/sq. ft.
– Ideal for eco-conscious homeowners seeking good R-value
• Premium Option: Mineral Wool
– Avg. Cost: $1.50–$3.00/sq. ft.
– Excellent for fire resistance and soundproofing
Beyond price, consider long-term energy savings. A higher R-value often pays dividends in lower heating and cooling bills. Always request detailed quotes from at least three insulation contractors to compare material grades, installation methods, and warranties.
H2: Q&A: Blown In Insulation Cost Questions
1) How much will blown in insulation cost for my 1,000-sq. ft. attic?
Depending on material, expect:
• Fiberglass: $500–$1,500
• Cellulose: $1,000–$2,000
• Mineral Wool: $1,500–$3,000
2) Is dense‐pack worth the extra cost?
Yes. Dense‐pack reduces settling, improves air sealing, and delivers a more consistent R-value over time.
3) Can I install blown in insulation myself?
DIY is possible with rental equipment, but pros ensure correct density, complete coverage, and compliance with local codes.
Conclusion
Choosing the right blown in insulation transforms your attic into a barrier against energy loss and elevated utility bills. Whether you opt for budget-friendly fiberglass, eco-smart cellulose, or high-performance mineral wool (or spray foam), understanding average prices and installation variables is key. Get multiple quotes, assess R-values, and invest in quality workmanship to maximize comfort, energy savings, and long-term value. Blown in insulation truly is the smart choice for affordable home comfort and efficiency.
