Cost to Have Insulation Blown in Attic: Types & Tips

Curious about the cost of adding blown-in insulation to your attic? Wondering how this upgrade can benefit your home? In this post, we’ll dive into the details of adding blown-in insulation to your attic and explore how it can enhance your living space. Whether you’re aiming to improve energy efficiency, lower utility bills, or create a more comfortable environment, adding insulation is a smart investment. Stay tuned to discover the advantages of this upgrade and learn about the potential savings it can bring to your household.

Types of Blown-In Insulation


Fiberglass blown-in insulation is made of tiny glass fibers and is a popular choice due to its affordability and fire-resistant properties. It provides excellent thermal performance, reducing heat loss in the attic.

Fiberglass insulation is easy to install and does not settle over time, maintaining its effectiveness. However, it may require more material to achieve the same R-value as other types, potentially increasing costs.


Cellulose blown-in insulation consists of recycled paper fibers treated with fire-retardant chemicals. It offers environmental benefits by using recycled materials and providing good thermal resistance.

One advantage of cellulose insulation is its ability to fill small gaps and voids in the attic, creating a more airtight seal. However, it can be prone to settling over time, which may reduce its insulating properties.

Mineral Wool

Mineral wool blown-in insulation is composed of natural minerals like rock or slag wool. It is known for its fire resistance, moisture resistance, and soundproofing qualities, making it a versatile option for attics.

Mineral wool insulation is non-combustible and can withstand high temperatures, enhancing the safety of your home. It retains its shape well over time, ensuring long-lasting performance.

Considerations for Choosing

When selecting the right type of blown-in insulation for your attic, consider factors like cost, R-value, environmental impact, and installation requirements. Fiberglass may be ideal for budget-conscious homeowners seeking fire resistance, while cellulose offers eco-friendly benefits but may settle over time.

For those prioritizing safety and durability, mineral wool stands out with its exceptional fire resistance and moisture protection. Evaluate your specific needs and consult with a professional to determine the most suitable option for your attic.

Factors Influencing Installation Costs

Attic Size

The size of the attic plays a significant role in determining the cost of adding blown-in insulation. Larger attics require more materials and labor, leading to higher overall expenses. Conversely, smaller attics may incur lower installation costs due to reduced material and labor requirements.

R-Value and Insulation Thickness

The R-value and thickness of the insulation directly impact the pricing of blown-in insulation installation. Higher R-values and thicker insulation layers provide better thermal resistance but also come at a higher cost. Contractors often charge more for materials with superior insulating properties.

Accessibility Challenges

Accessibility to the attic can influence the overall cost of adding blown-in insulation. If the attic is challenging to reach or requires additional preparation work for installation, contractors may charge extra for the added effort and time. Factors like narrow access points or obstacles in the attic space can contribute to increased labor costs.

Labor Costs

Labor costs are a crucial factor in determining the total expense of installing blown-in insulation in an attic. The complexity of the job, including factors like the need for moving obstacles, working around existing structures, or intricate layouts, can impact labor costs. Contractor rates and regional labor market conditions can influence overall installation prices.

Estimating Your Attic’s Insulation Cost

Calculate Cost per Square Foot

To estimate the cost of adding blown-in insulation to your attic, use a simple formula. First, determine the square footage of your attic space. Next, multiply this by the cost per square foot of the desired insulation type.

Average Costs for Different Insulation Types

For blown-in fiberglass insulation, expect to pay around $1 to $1.50 per square foot. Cellulose insulation typically ranges from $0.40 to $0.75 per square foot. Spray foam insulation can cost between $1.50 and $3 per square foot.

Obtain Multiple Quotes

To get an accurate estimate, it’s advisable to request quotes from several contractors. This allows you to compare prices and services offered by different professionals in the market.

Additional Costs in the Installation Process

Air Sealing

Air sealing is a crucial step often overlooked in attic insulation projects. It involves sealing gaps, cracks, and holes to prevent air leakage. This process ensures that the insulation functions efficiently by maintaining a consistent temperature inside your home.

Attic Ventilation Improvements

Improving attic ventilation is another essential consideration when adding blown-in insulation to your attic. Proper ventilation helps regulate moisture levels and prevents mold growth. It also extends the lifespan of your roof by reducing heat buildup.

Removal of Old Insulation

Before installing new blown-in insulation, removing old insulation may be necessary, adding to the overall cost. Old or damaged insulation can hinder the effectiveness of new insulation and lead to energy loss. Removing it ensures a clean slate for optimal insulation performance.

Money-Saving Tips for Insulation Installation

Efficient Material Choices

When installing insulation in your attic, opt for materials that offer a good balance between cost and effectiveness. Fiberglass is a popular choice due to its affordability and decent insulating properties.

DIY vs. Professional Installation

Consider installing blown-in insulation yourself if you’re handy with tools. This can save on labor costs, but ensure you follow safety guidelines. Hiring professionals guarantees quality work but comes at a higher price.

Energy-Efficient Practices

To maximize energy efficiency and reduce long-term costs, seal any air leaks in the attic before adding insulation. Proper ventilation and sealing gaps around pipes and ductwork can prevent energy wastage.

Rebates and Incentives

Research available rebates or incentives when upgrading your attic insulation. Many utility companies offer financial assistance to encourage homeowners to improve energy efficiency. Take advantage of these programs to offset installation costs.

Signs Your Attic Needs New Insulation

Common Signs

  • Uneven Temperatures: Notice significant temperature differences between rooms in your home.
  • Drafts: Feel drafts or cold spots, indicating insulation gaps allowing air to seep through.
  • Increased Energy Bills: Experience a sudden spike in your heating or cooling costs.

Inspecting your attic for insulation issues is crucial. Start by visually checking the insulation for any signs of damage, wear, or thinning. Look out for discoloration, which can indicate moisture problems affecting the insulation’s effectiveness. mold growth suggests poor ventilation or leaks that need attention.

Conducting a Simple Visual Inspection

Begin by examining the attic floor for any visible gaps, thin areas, or worn-out sections in the insulation. Use a flashlight to illuminate dark corners and check for signs of pest infestation, as rodents can damage insulation. Pay close attention to any light shining through, indicating gaps that need sealing.

To ensure optimal energy efficiency and comfort in your home, promptly address any issues with attic insulation. By replacing old or damaged insulation, you can create a more consistent indoor temperature and reduce energy wastage. This proactive approach not only enhances comfort but also lowers utility costs over time.

Benefits of Blown-In Insulation

Improved Energy Efficiency

Blown-in insulation offers enhanced energy efficiency by creating a barrier that helps regulate indoor temperatures. This can lead to lower heating and cooling costs throughout the year. With proper installation, it effectively seals gaps and prevents air leakage, reducing the workload on HVAC systems.

Noise Reduction

One of the key benefits of blown-in insulation is its ability to dampen sound, providing a quieter indoor environment. By absorbing sound vibrations, it minimizes noise transfer between rooms and from outside sources. This is especially beneficial for homes located in noisy neighborhoods or near busy streets.

Moisture Prevention

Blown-in insulation acts as a protective layer against moisture infiltration, helping to prevent mold growth and structural damage in the attic. By maintaining optimal humidity levels, it safeguards the integrity of your home’s structure and improves indoor air quality. This is crucial for preserving the longevity of your property.

Enhanced Indoor Comfort

By adding blown-in insulation to your attic, you can significantly improve indoor comfort levels year-round. It creates a more consistent temperature throughout the house, eliminating cold spots and drafts. This results in a cozy living environment during both hot summers and chilly winters.

Long-Term Cost Savings

Investing in quality blown-in insulation for your attic may require an initial upfront cost but brings long-term financial benefits. The cost savings associated with reduced energy consumption can add up over time, leading to lower utility bills each month. By preventing issues like moisture damage, you avoid expensive repairs down the line.

Maintaining Your Attic’s Insulation

Prolong Lifespan

To prolong the lifespan of your attic’s blown-in insulation, consider sealing any air leaks to prevent heat loss. Ensure proper ventilation to avoid moisture buildup that can damage the insulation.

Regularly fluffing the insulation can help maintain its effectiveness by preventing it from compacting over time. By doing so, you ensure that the insulation retains its optimal thickness, providing maximum energy efficiency.

Importance of Inspections

Regular inspections play a crucial role in identifying any issues with your attic’s insulation promptly. Look out for signs of moisture damage, mold growth, or pest infestations that can compromise the insulation’s performance.

Inspect the attic for any gaps or thinning areas in the insulation coverage. Addressing these problems early on can prevent further damage and maintain the overall efficiency of your insulation.

Professional Maintenance Checks

Scheduling professional maintenance checks for your attic’s blown-in insulation is highly recommended to ensure its optimal performance. Professionals can conduct thorough inspections and address any underlying issues effectively.

During maintenance checks, professionals will assess the condition of the insulation, identify any areas needing replenishment or repair, and provide recommendations for enhancing its efficiency. This proactive approach can save you money in the long run by preventing extensive damage.


You’ve learned about the types of blown-in insulation, factors affecting installation costs, estimating expenses, additional costs, money-saving tips, signs of needing new insulation, benefits of blown-in insulation, and how to maintain it. Now armed with this knowledge, you can make informed decisions about insulating your attic. Remember to consider all the cost factors and maintenance requirements to ensure your insulation remains effective. By taking proactive steps and investing in quality insulation, you can save on energy bills and create a more comfortable living environment. Don’t hesitate to reach out to professionals for assistance or further guidance on insulating your attic effectively.

Frequently Asked Questions

What are the benefits of blown-in insulation for attics?

Blown-in insulation offers improved energy efficiency, reduced utility bills, better temperature regulation in your home, and soundproofing qualities. It is a cost-effective solution for enhancing comfort and increasing the value of your property.

How can I estimate the cost of insulating my attic with blown-in insulation?

You can estimate the cost by considering factors like the size of your attic, type of insulation material, labor costs, and any additional services required. It’s advisable to get quotes from multiple contractors to compare prices accurately.

When should I consider adding blown-in insulation to my attic?

Consider adding blown-in insulation if you notice fluctuating indoor temperatures, high energy bills, drafts in your home, or if your current insulation is old or insufficient. Upgrading the insulation can significantly improve your home’s comfort and energy efficiency.

Are there any maintenance tips for preserving attic insulation?

Regularly inspect your attic for signs of damage or pests that could affect the insulation’s performance. Ensure proper ventilation to prevent moisture buildup and mold growth. Address any issues promptly to maintain the effectiveness of your blown-in insulation.

How can I save money on the installation of blown-in attic insulation?

To save money on installation costs, consider bundling services with other home improvement projects, getting quotes from multiple contractors for competitive pricing, utilizing seasonal discounts or promotions, and ensuring your attic is properly prepared before installation to streamline the process.


Increase energy efficiency and save money with blown-in insulation. Discover the cost to have insulation blown in the attic, types, and expert tips.