Best Blown-In Attic Insulation Cost: AttiCat vs. GreenFiber 2023

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Picture this: you’re sitting in your living room, feeling a draft coming from above the walls. It’s time to consider insulating your garage to keep the flame inside and maintain a cozy environment. You know it’s time to do something about insulating your attic walls. Consider using rockwool or spray insulation. But where do you start? Blown-in insulation, such as rockwool, is the ideal solution for insulating walls. It offers excellent flame resistance.

Blown-in insulation, such as rockwool and Greenfiber, is not only an effective solution for insulating attics but also offers numerous benefits for walls.

In this blog post, we’ll discuss how to get a quote for blown-in insulation products like rockwool. We’ll also explore the different types of blown-in insulation available for your walls. Additionally, we’ll touch on the factors that can affect the overall cost of the job in your area. Whether you’re looking to insulate a new home or upgrade your existing attic space, understanding the pros and cons of blown-in insulation, such as rockwool and cellulose, will help you make an informed decision. Insulating your walls and the surrounding area with these materials can provide great benefits.

So buckle up as we dive into the world of blown-in insulation and discover how rockwool and cellulose can transform your home’s walls into a more comfortable and energy-efficient area.

Understanding Blown-In Insulation

Blown-in insulation, including rockwool and cellulose, is a popular method used to insulate attics and walls in homes, providing value per square foot. It involves the installation of loose insulation material, such as blown fiberglass or cellulose, into cavities or spaces using specialized equipment to increase the value per square foot. This technique is highly effective in filling gaps, reducing air leakage, and improving thermal resistance in cellulose insulation. It can significantly enhance the energy efficiency of a building, providing better insulation per square foot.

Definition and Explanation of Blown-In Insulation

Blown-in insulation refers to the process of blowing loose cellulose insulation materials into desired areas using a machine. The insulation material, typically made up of small cellulose particles, can easily conform to irregular spaces. This makes cellulose an ideal solution for insulating hard-to-reach areas like attics and wall cavities.

The primary goal of blown-in cellulose insulation is to create a barrier that prevents the transfer of heat between the interior and exterior of a building. By reducing air leakage through gaps and cracks, blown-in cellulose insulation helps maintain a consistent temperature indoors while minimizing energy loss.

How It Works: Filling Gaps and Reducing Air Leakage with New Wall Insulation Wall insulation is a key component in insulating a building. It helps improve thermal resistance by filling gaps and reducing air leakage. One effective method of insulating is through the use of spray foam insulation. With new insulation, gaps are sealed, air leakage is minimized, and thermal resistance is greatly improved.

When cellulose blown-in insulation is installed, it fills gaps and voids within the walls or attic space. This creates a continuous layer of thermal protection, preventing heat from escaping during colder months and entering during hotter months. Cellulose is an effective material for maintaining temperature control.

In addition to filling gaps, blown-in cellulose insulation also helps reduce air leakage. The cellulose particles settle closely together when installed properly, creating an effective barrier against drafts and airflow. This not only improves comfort but also enhances energy efficiency by reducing the need for excessive heating or cooling.

Furthermore, blown-in insulation improves thermal resistance by increasing the R-value (a measure of thermal resistance) in your home’s envelope. A higher R-value means better insulation performance, resulting in reduced energy consumption and lower utility bills.

Types of Materials Used in Blown-In Insulation

There are various types of materials used in blown-in insulation:

  1. Blown Fiberglass: Made from recycled glass fibers, blown fiberglass insulation is commonly used due to its excellent thermal and sound insulation properties. It is non-combustible and resistant to mold growth.
  2. Cellulose Insulation: This type of blown-in insulation is made from recycled paper products treated with fire retardants. It offers good thermal performance and can be a more environmentally friendly option.
  3. Foam Insulation: Foam insulation, such as spray foam or rigid foam boards, can also be used for blown-in applications. It provides superior air sealing capabilities and high R-values, making it an efficient choice for insulating hard-to-reach areas.
  4. Rock Wool: Made from minerals like basalt or furnace slag, rock wool insulation is known for its fire-resistant properties.

Cost Factors for Blown-In Insulation

The cost of installation can vary depending on several factors. Let’s dive into the key factors that influence the overall cost of blown-in insulation.

Size and Accessibility of the Attic Space

The size of your attic plays a significant role in determining the cost of blown-in insulation. The larger the space, the more material will be required to cover it adequately. If your attic has irregular shapes or obstructions like ductwork or wiring, it may require extra effort and time to install the insulation properly. This can impact the overall cost as well.

Additional Factors Affecting Costs

Apart from the size, there are other factors that contribute to the total cost of blown-in insulation installation. Labor is one such factor – if you hire professionals for installation, their fees will add to your expenses. The complexity of your project also affects costs; intricate designs or hard-to-reach areas may require specialized equipment or techniques, which could increase the overall price.

Estimating Insulation Costs

To estimate how much blown-in insulation will cost for your attic, you need to consider two main factors: square footage and square foot pricing. The square footage refers to the total area that needs insulating – this includes both horizontal and vertical surfaces in your attic. Square foot pricing is typically provided by insulation contractors and represents how much they charge per square foot of coverage.

For example, if your attic measures 1,000 square feet and an insulation contractor charges $2 per square foot for blown-in insulation, you can expect to pay around $2,000 for materials alone. However, keep in mind that this is just an estimate and does not include labor costs or any additional expenses.

Other Considerations

While cost is an important consideration when installing blown-in insulation in your attic, it’s crucial not to compromise on quality. Investing in high-quality insulation can lead to long-term energy savings and improved comfort in your home. Consider the potential return on investment – energy-efficient homes tend to have higher resale values.

Before proceeding with blown-in insulation, it’s advisable to consult multiple contractors and obtain detailed quotes. This will help you compare prices, evaluate the scope of work, and make an informed decision that suits your budget and requirements.

Blown-In Insulation Cost by Material

Comparison of Different Materials

There are several materials to choose from. Let’s take a closer look at the most commonly used ones: fiberglass, cellulose, and mineral wool.

  • Fiberglass: Fiberglass is a popular choice due to its affordability and effectiveness in reducing heat transfer. It consists of tiny glass fibers that trap air pockets, providing insulation. While it may have a higher upfront cost compared to other materials, it offers long-term energy savings.
  • Cellulose: Cellulose insulation is made from recycled paper products treated with fire-retardant chemicals. It is an eco-friendly option that offers excellent thermal performance. Cellulose insulation is generally cheaper than fiberglass and provides better soundproofing capabilities.
  • Mineral Wool: Mineral wool, also known as rock wool or slag wool, is made from natural minerals like basalt or slag. It has excellent fire resistance properties and can withstand high temperatures without melting or releasing toxic fumes. Mineral wool insulation tends to be more expensive than fiberglass but offers superior thermal and acoustic performance.

Pros and Cons of Each Material

Now let’s weigh the pros and cons of these different blown-in insulation materials in terms of cost-effectiveness:


  • Pros:
  • Affordable upfront cost.
  • Long-term energy savings.
  • Resistant to moisture damage.
  • Cons:
  • Requires professional installation for optimal results.
  • Can cause skin irritation during installation if proper protective gear isn’t worn.


  • Pros:
  • Lower cost compared to fiberglass.
  • Excellent soundproofing capabilities.
  • Made from recycled materials, making it environmentally friendly.
  • Cons:
  • Susceptible to moisture damage if not properly installed or sealed.
  • May settle over time, reducing its effectiveness.

Mineral Wool:

  • Pros:
  • Superior fire resistance.
  • Excellent thermal and acoustic performance.
  • Durable and long-lasting.
  • Cons:
  • Higher upfront cost compared to fiberglass and cellulose.
  • Can be heavier, making installation more challenging.

Average Costs per Square Foot or Pound

When considering blown-in insulation costs, it’s essential to factor in the average costs per square foot or pound for each material:

  • Fiberglass: On average, fiberglass blown-in insulation can cost between $0.75 to $1.50 per square foot.
  • Cellulose: The average cost of cellulose blown-in insulation ranges from $1.00 to $2.00 per square foot.

Cost Comparison: Blown-In vs. Other Insulation Types

You have several options to choose from. Two common alternatives to blown-in insulation are batts and spray foam. It’s important to consider the cost differences between these insulation types before making a decision.

Batts, also known as blanket insulation, come in pre-cut panels or rolls that you can install yourself. They are typically made of fiberglass or mineral wool and provide good thermal resistance. However, batts can be more expensive than blown-in insulation when you factor in the labor costs of installation.

Spray foam insulation offers excellent air sealing properties and can fill gaps and crevices effectively. It is commonly used in hard-to-reach areas such as crawl spaces or irregularly shaped attics. While spray foam provides superior insulation performance, it tends to be the most expensive option upfront due to both material and installation costs.

Advantages and disadvantages in terms of upfront expenses and long-term savings are important factors to consider when planning a project. One key aspect to consider is the average cost, which includes both material cost and labor cost. By understanding these costs, you can make informed decisions about your project’s budget and potential savings in the long run.

Blown-in insulation, on the other hand, offers a more cost-effective solution for many homeowners. The materials used for blown-in insulation are generally less expensive compared to batts or spray foam. The installation process is relatively quick and straightforward.

One advantage of blown-in insulation is its ability to fill even the tiniest gaps and cavities, providing better coverage than batts or spray foam. This helps prevent air leaks and heat loss, resulting in lower energy bills over time.

However, it’s worth noting that while blown-in insulation may have lower upfront expenses compared to other types, it requires professional installation for optimal results. Hiring a contractor adds an additional cost but ensures proper application of the material for maximum efficiency.

Considerations when choosing the most cost-effective products for your project and vertical applications in homes.

When determining which type of insulation is best suited for your needs, it’s essential to consider factors beyond just upfront costs. Think about the long-term savings and energy efficiency benefits that each insulation type offers.

Blown-in insulation, such as AttiCat blown-in insulation, can provide excellent thermal performance and cost savings over the lifespan of your home. Its ability to conform to irregular spaces and fill gaps effectively makes it a popular choice among homeowners.

Ultimately, the most cost-effective option will depend on various factors such as your budget, the size and shape of your attic, and your long-term energy goals. Consulting with a professional insulation contractor can help you assess these factors and make an informed decision.

Calculating Blown-In Insulation Costs in 2023

Estimating the cost of blown-in insulation for your attic can be a crucial step in planning your home improvement project. By understanding the factors that contribute to the overall cost, you can make informed decisions and budget accordingly.

Estimating the total cost based on current market prices

To estimate the total cost of blown-in insulation, it is essential to consider current market prices for materials and labor. Prices may vary depending on your location and the specific type of blown-in insulation you choose. Researching local suppliers and contractors can give you an idea of the average costs in your area.

Take into account other expenses such as equipment rental or purchase, permits, and any additional materials needed for installation. These costs may vary depending on the size and complexity of your attic space.

Factors to consider when calculating costs

Several factors influence the overall cost of blown-in insulation. First and foremost is the size of your attic space. Larger attics require more material and labor, which can increase costs significantly.

The type and quality of insulation also play a role in determining the price. Different types of blown-in insulation have varying R-values (a measure of thermal resistance), which affects their effectiveness at insulating your home. Higher R-values generally come at a higher cost but provide better energy efficiency.

Labor costs should not be overlooked when calculating expenses. Hiring professionals to install blown-in insulation ensures proper installation but comes with an additional cost. If you choose to install it yourself, remember to factor in any necessary equipment rentals or purchases.

There are online tools or formulas available to help homeowners estimate the costs of their own home projects, including building new homes, renovating existing homes, or adding a garage. These tools can be especially useful for determining the cost per square foot of a project.

If you prefer a DIY approach or want to get an estimate before contacting professionals, there are online tools available that can help you calculate blown-in insulation costs. These tools typically require you to input information such as the size of your attic, desired R-value, and your location. They then provide an estimate based on current market prices.

Keep in mind that these online estimates are just rough approximations and may not account for all variables. It’s always a good idea to consult with professionals who can provide more accurate assessments based on your specific needs.

Additional Expenses to Consider

Removal and Disposal of Existing Insulation

When calculating the overall cost of blown-in insulation for your attic, it’s essential to consider potential additional expenses beyond just material and installation costs. One significant factor that can impact the total cost is the removal and disposal of existing insulation. If you already have insulation in your attic that needs to be replaced or removed before installing blown-in insulation, it may incur extra charges.

Removing old insulation can be a labor-intensive process, requiring specialized equipment and expertise. The cost will depend on factors such as the type of insulation, square footage of the attic, and difficulty of access. It’s crucial to consult with professionals who can provide accurate estimates for this task.

Preparing the Attic Space

Another expense to keep in mind is preparing the attic space before installation. This step ensures optimal conditions for blown-in insulation and enhances its effectiveness. Preparing may involve sealing any air leaks, repairing damaged areas, or addressing ventilation issues.

Sealing air leaks is particularly important because it prevents drafts and heat loss, maximizing energy efficiency. However, this process may require additional materials like caulk or weatherstripping, which can add to the overall cost.

Repairing damaged areas in the attic also plays a vital role in ensuring proper insulation performance. Any structural issues or water damage should be addressed before installing blown-in insulation to avoid further complications down the line.

Ventilation is another aspect that needs consideration during preparation. Proper airflow in the attic helps regulate temperature and moisture levels. If your attic lacks adequate ventilation, you might need to install vents or fans to improve air circulation—an expense that should be factored into your budget.

Other Factors Affecting Cost

Several other factors can influence the cost of blown-in insulation for your attic. These include:

  • Size of the Attic: The larger your attic space, the more material will be required for complete coverage.
  • Accessibility: If your attic is challenging to access, such as through narrow staircases or tight crawlspaces, it may increase labor costs.
  • Insulation Type: Different insulation materials have varying price ranges. It’s essential to consider the pros and cons of each option and choose the one that best suits your needs and budget.
  • Energy Savings: While blown-in insulation can be an expensive option upfront, it can significantly reduce energy bills in the long run. Lower energy consumption means potential savings on monthly utility expenses.

To get a clear understanding of the total cost, it’s advisable to consult with professionals who offer free estimates. They can assess your specific requirements, factor in all these elements, and provide you with an accurate price range for blown-in insulation installation.

Regional Cost Variations for Blown-In Insulation

The cost can vary significantly depending on your location. Let’s explore the regional variations in blown-in insulation costs and understand the factors that influence these differences.

Exploring regional variations in blown-in insulation costs

Blown-in insulation costs can fluctuate from one region to another due to various factors. One of the primary reasons for these variations is the difference in labor and material costs across different areas or states. For instance, densely populated urban areas may have higher labor costs compared to rural regions, which can impact the overall cost of installation.

Another factor that contributes to regional cost variations is the availability and accessibility of materials. Some areas may have a limited supply of certain types of insulation materials, leading to higher prices due to increased demand or transportation expenses. On the other hand, regions with abundant local suppliers might offer more competitive prices for blown-in insulation.

Factors influencing cost differences across different areas or states

Several factors influence the cost differences in blown-in insulation across different areas or states. One significant factor is climate conditions. Regions with extreme temperatures, such as hot summers or cold winters, often require thicker layers of insulation for optimal energy efficiency. This additional material requirement can lead to higher installation costs compared to regions with milder climates.

The size and complexity of your attic space also play a role in determining the cost variation. Larger attics will require more insulation material and longer installation times, resulting in higher overall costs. Similarly, if your attic has unique features like irregular shapes or obstructions that make installation more challenging, it may incur additional expenses.

Local building codes and regulations can impact pricing variations. Some regions may have stricter requirements regarding energy efficiency standards or fire safety measures that contractors must adhere to during installation. These additional compliance measures can increase labor hours and materials needed, thus affecting the overall cost.

Researching local contractors and suppliers for accurate cost estimates for insulating walls and other vertical applications.

To get accurate cost estimates for blown-in insulation in your region, it is crucial to research local contractors and suppliers. Reach out to multiple professionals and request quotes based on the specific details of your attic space. By comparing these quotes, you can gain a better understanding of the average cost range in your area.

When researching contractors, consider their experience, reputation, and customer reviews. It’s important to choose a reliable professional who will provide quality installation services. Similarly, when sourcing materials from local suppliers, compare prices and inquire about any discounts or promotions they may offer.

By conducting thorough research and obtaining multiple quotes, you can make an informed decision about the best blown-in insulation option for your attic while staying within your budget.

Answering Common Questions on Blown-In Insulation

Blown-in insulation is a popular choice for homeowners looking to improve energy efficiency and comfort in their homes. However, there are often questions and concerns about the cost, lifespan, and installation process of blown-in insulation.

Addressing Frequently Asked Questions about Blown-In Insulation Costs

One common question that homeowners have is how much blown-in insulation costs. The cost of blown-in insulation can vary depending on factors such as the size of your home, the type of insulation material used (such as spray foam or cellulose), and the region you live in. On average, homeowners can expect to pay between $1.50 to $3 per square foot for blown-in insulation installation. While this may seem like a significant investment upfront, it is important to consider the long-term savings on energy bills that come with improved insulation.

How Long Does Blown-In Insulation Last? Is It Worth the Investment?

The lifespan of blown-in insulation depends on several factors, including the type of material used and proper installation. Generally, blown-in insulation can last anywhere from 20 to 30 years or even longer with proper maintenance. However, it’s essential to remember that over time, insulation may settle or become less effective due to various factors such as moisture or pests.

Despite these considerations, investing in blown-in insulation is generally worth it due to its long-term benefits. Properly installed blown-in insulation helps reduce energy consumption by preventing heat loss during winter months and heat gain during summer months. This means lower energy bills year-round and increased comfort within your home.

Can Blown-In Insulation Be Installed Over Existing Insulation?

Yes! One advantage of blown-in insulation is its ability to be installed over existing insulation in many cases. Before adding new layers of insulation, it’s crucial to assess the condition of the existing insulation. If there are signs of damage, such as moisture or mold growth, it may be necessary to remove and replace the old insulation before installing blown-in insulation.

By adding blown-in insulation over existing insulation, you can enhance its effectiveness and improve overall energy efficiency. The combination of different types of insulation materials can create a more robust thermal barrier that helps keep your home comfortable throughout the year.


In conclusion, blown-in insulation is a cost-effective and efficient solution for improving the energy efficiency of your home. By understanding the various factors that influence the cost of blown-in insulation and comparing it to other insulation types, you can make an informed decision that suits your budget and needs. Whether you choose fiberglass, cellulose, or mineral wool, blown-in insulation offers excellent thermal performance and can help reduce your energy bills.

To ensure the best results, it’s crucial to work with a professional contractor who has experience in installing blown-in insulation. They can provide expert advice on the right material and thickness for your specific needs. Consider any additional expenses such as air sealing or ventilation upgrades to maximize the effectiveness of your insulation.

By investing in blown-in insulation, you not only save money on heating and cooling costs but also contribute to a more sustainable future by reducing energy consumption. So take action today and start enjoying the benefits of a well-insulated home.


What is blown-in insulation?

Blown-in insulation is a type of insulation material that is installed by blowing it into the desired space, such as attics or walls. It consists of small particles, like fiberglass or cellulose, which fill gaps and create a thermal barrier to improve energy efficiency.

How does blown-in attic insulation help?

Blown-in attic insulation helps by creating a layer of thermal resistance that prevents heat transfer between your home and the outside environment. It keeps your home cooler in summer and warmer in winter, reducing energy consumption and saving you money on heating and cooling bills.

What is the cost of blown-in attic insulation?

The cost of blown-in attic insulation depends on various factors like the size of your attic, the type of insulation material used, and labor costs. On average, it can range from $1.50 to $3 per square foot. However, it’s best to get quotes from professionals for an accurate estimate.

Is AttiCat blown-in insulation a good choice?

Yes, AttiCat blown-in insulation is an excellent choice for attics. It offers superior thermal performance and helps reduce energy waste effectively. Its unique design allows for quick installation with minimal mess or disruption to your home.

How long does blown-in attic insulation last?

With proper installation and maintenance, blown-in attic insulation can last for several decades. However, its effectiveness may decrease over time due to settling or damage caused by pests or moisture. Regular inspections are recommended to ensure optimal performance.


Get the best blown-in attic insulation cost with AttiCat vs. GreenFiber in 2023. Compare prices and choose the right option for your home.