Blown-In Insulation: Cost Guide & Prices

Did you know that the average cost for blown-in insulation installation can save you up to 30% on your energy bills annually? When considering the benefits of improved energy efficiency and lower utility costs, investing in blown-in insulation becomes a smart choice for homeowners. Blown-in insulation offers excellent coverage and can be installed quickly and efficiently, making it a cost-effective option for insulating your home.

Whether you are looking to enhance your home’s comfort or reduce your carbon footprint, blown-in insulation is a practical solution that provides long-term savings. In this post, we will delve into the average cost of blown-in insulation, the factors that influence pricing, and the benefits of choosing this insulation method for your property. Learn how blown-in insulation can help you achieve a more energy-efficient home while saving money in the process.

Explaining Blown-In Insulation


Blown-in insulation is a type of insulation that is installed by blowing or spraying insulating materials into walls, attics, or other spaces. This method differs from traditional batting insulation as it can easily conform to any space, providing better coverage and reducing air leakage.

Materials Used

The materials used in blown-in insulation typically include fiberglass, cellulose, or mineral wool. These materials are either made from recycled content or natural resources, making them eco-friendly options for insulating homes. The use of these materials ensures that the insulation is effective in reducing heat loss and improving energy efficiency.

Application Process

The application process of blown-in insulation involves using a machine to blow the insulating material into the desired area. This method allows for quick and efficient installation, especially in hard-to-reach areas such as attics or walls. The material is evenly distributed, filling gaps and voids to create a seamless barrier against heat loss.

Types of Blown-In Insulation


Fiberglass blown-in insulation consists of tiny particles of glass fibers. This type is known for its fire resistance and durability, making it a popular choice among homeowners. Fiberglass insulation has a moderate R-value per inch, providing decent energy efficiency.

Fiberglass insulation is suitable for attics and walls, offering effective thermal performance. It is also cost-effective and easy to install, making it a practical option for many households. However, fiberglass insulation may irritate the skin and respiratory system during installation.


Cellulose blown-in insulation is made from recycled paper materials treated with fire-retardant chemicals. This type is eco-friendly and offers excellent thermal performance. Cellulose insulation has a higher R-value per inch compared to fiberglass, enhancing energy efficiency.

Cellulose insulation is ideal for insulating walls and attics, effectively reducing heat loss in homes. It provides good soundproofing properties, creating a quieter indoor environment. However, cellulose insulation can settle over time, impacting its effectiveness.

Mineral Wool

Mineral wool blown-in insulation is composed of natural minerals like rock or slag wool. This type is non-combustible and offers superior fire resistance properties. Mineral wool insulation has a high R-value per inch, ensuring optimal energy efficiency.

Mineral wool insulation works well in various areas of the house, including attics and floors. It provides excellent thermal and acoustic insulation, improving overall comfort levels indoors. However, mineral wool insulation can be heavier than other types, requiring professional installation.

Pros and Cons

  • Fiberglass: Durable and cost-effective but may cause irritation.
  • Cellulose: Eco-friendly with good thermal performance but may settle over time.
  • Mineral Wool: Superior fire resistance and high R-value but heavier for installation.

Benefits and Drawbacks


Blown-in insulation offers energy efficiency by reducing heat transfer, lowering energy bills, and maintaining a comfortable indoor temperature. It also provides soundproofing, minimizing noise from outside sources for a quieter living environment. This type of insulation is eco-friendly, often made from recycled materials like cellulose or fiberglass.

  • Energy efficiency
  • Soundproofing
  • Eco-friendliness

Blown-in insulation, with its ability to fill small gaps and crevices, creates a more airtight seal compared to traditional batt insulation. This tight seal helps in preventing air leaks and improving overall energy efficiency within the home. Moreover, blown-in insulation is easily customizable to fit different spaces and can be installed quickly and efficiently.


One potential drawback of blown-in insulation is settling, where the material may compact over time, reducing its effectiveness. This settling can lead to uneven coverage and decreased R-value, impacting the insulation’s performance. Another concern is moisture retention, as blown-in insulation can absorb moisture if not properly installed or maintained.

  • Settling
  • Moisture retention

To mitigate settling issues, periodic inspections and maintenance are recommended to ensure the insulation remains evenly distributed and effective. Proper ventilation in attics or crawl spaces can help prevent moisture buildup and protect the integrity of the insulation. Despite these drawbacks, blown-in insulation still offers numerous benefits that outweigh these challenges.

Comparison with Traditional Insulation Methods

When comparing blown-in insulation to traditional methods like batt or roll insulation, the former excels in terms of coverage and efficiency. Blown-in insulation can reach areas that are difficult to access with batts, providing more comprehensive coverage throughout the home. Its seamless application reduces gaps and seams that could lead to energy loss in traditional installations.

Average Installation Costs

Cost Range

Blown-in insulation installation typically costs $1.50 to $3.50 per square foot, making it a cost-effective choice for many homeowners. This pricing includes both materials and labor costs.

Comparison to Other Types

Compared to other insulation types like fiberglass or foam board, blown-in insulation generally falls within the mid-range in terms of cost. Fiberglass insulation usually ranges from $0.40 to $1.20 per square foot, while foam board can cost around $2 to $6 per square foot.

Total Cost Calculation

The total cost of installing blown-in insulation is calculated based on the size of the area that needs to be insulated. Contractors determine the total square footage of the space and then multiply it by the cost per square foot for installation.

Cost Factors Explained

Material Type

Blown-in insulation cost varies based on the material type used. Fiberglass tends to be more budget-friendly compared to cellulose or foam options. Each material has different thermal properties affecting pricing.

The durability and effectiveness of the material also influence costs. Higher quality materials may have a higher upfront cost but can lead to long-term savings through improved energy efficiency.

Area Size

The size of the area requiring insulation directly impacts the overall cost. Larger spaces will require more material and labor, increasing the total expenses. Smaller areas, on the other hand, might be more cost-effective to insulate.

When calculating costs, it’s essential to consider the thickness of insulation needed for optimal efficiency. Thicker layers may be required for larger spaces or areas with higher energy loss.

Labor Costs

Labor costs play a significant role in determining the total expense of blown-in insulation installation. The complexity of the job, such as hard-to-reach areas or intricate layouts, can increase labor costs.

Professional installation ensures proper coverage and effectiveness but comes with a price tag. Experienced installers may charge higher rates due to their expertise and skill in handling various insulation materials.

Location and Accessibility

The location of the installation site can impact pricing significantly. Sites that are difficult to access or require special equipment for installation may incur additional costs.

Factors like travel distance for installers, availability of utilities on-site, and obstacles hindering installation can all influence the final cost estimate.

Additional Services

Incorporating additional services like air sealing along with blown-in insulation can affect overall costs. While air sealing helps improve energy efficiency, it adds an extra expense to the project.

Proper air sealing ensures that there are no gaps or leaks in the building envelope, enhancing the effectiveness of the insulation. However, homeowners should weigh the benefits against the added cost implications before opting for this service.

Additional Installation Considerations

Proper Ventilation

During blown-in insulation installation, proper ventilation is crucial to ensure the longevity and effectiveness of the insulation. Adequate ventilation helps in maintaining a consistent temperature throughout the property by preventing heat loss or gain.

Moisture Barriers

In certain installations, incorporating moisture barriers and vapor retarders is essential to prevent moisture buildup within the insulation. These barriers help in protecting the insulation material from mold, mildew, and structural damage caused by excess moisture.

Certified Professionals

Hiring certified professionals for the installation of blown-in insulation is highly recommended to ensure safe and effective results. Certified installers have the expertise and knowledge to handle insulation materials properly, reducing the risk of errors or safety hazards during installation.

Saving Tips on Installation

Seek Quotes

When considering blown-in insulation installation, seek quotes from multiple contractors. This helps in finding the best deal available.

Energy Efficiency

To maximize energy efficiency, ensure proper sealing of any air leaks before installing blown-in insulation. This can significantly reduce long-term heating and cooling costs.

DIY Options

Consider DIY options for preparing the space before professional installation. Simple tasks like clearing the area and moving obstacles can save on labor costs.

Material Comparison

Compare different types of blown-in insulation materials to find a balance between cost and quality. Some materials may be more affordable while still offering good insulation properties.

Seasonal Discounts

Take advantage of seasonal discounts offered by contractors for insulation installations. Many companies provide promotions during slower seasons, helping homeowners save money.

Recognizing Replacement Needs


Blown-in insulation may need replacement if there are drafts or uneven temperatures in the house. Water damage or mold growth can also signal replacement needs.


The lifespan of blown-in insulation is around 20-30 years, depending on the material used and maintenance. Over time, settling and compression reduce its effectiveness.


To assess existing blown-in insulation, check for moisture damage, pest infestations, or signs of wear like thinning layers. Consult a professional for a thorough inspection.


You now have a solid understanding of blown-in insulation, its types, benefits, drawbacks, costs, and installation considerations. Armed with this knowledge, you can make informed decisions about insulating your home efficiently while considering your budget and specific needs. Remember to explore saving tips and recognize when replacement is necessary to maintain optimal insulation performance. By being proactive in your approach to insulation, you can enhance your home’s energy efficiency, comfort levels, and even save on energy bills in the long run.

Frequently Asked Questions

What is Blown-In Insulation?

Blown-in insulation is a type of insulation material that is installed by blowing or spraying it into place, filling gaps and creating a seamless barrier against heat loss or gain.

How does Blown-In Insulation differ from other types?

Blown-in insulation differs from traditional batt insulation as it can be applied more easily to irregular spaces, providing better coverage and energy efficiency.

What are the benefits of using Blown-In Insulation?

Blown-in insulation offers improved energy efficiency, reduced heating and cooling costs, sound absorption properties, and better coverage in hard-to-reach areas compared to other insulation types.

How much does Blown-In Insulation installation cost on average?

The average cost for blown-in insulation installation ranges between $1.50 to $3.00 per square foot, depending on factors such as the type of material used and the complexity of the project.

Are there any tips for saving on Blown-In Insulation installation costs?

To save on installation costs, consider bundling multiple home improvement projects together, obtaining quotes from multiple contractors, and taking advantage of any available rebates or incentives for energy-efficient upgrades.


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