Blown-In Attic Insulation: DIY Guide & Cost” -> “Blown-In Insulation Service: Attic DIY Guide & Cost

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“Energy efficiency is not just a trend, it’s a necessity for new insulation, water heater, and vacuum.” – Unknown.

Proper insulation is key. Blown-in insulation, including spray foam and foam board, has emerged as a popular solution for improving attic insulation, offering numerous benefits that go beyond just keeping the cold air out. This type of insulation can be used alongside traditional materials like drywall to create a well-insulated space from the roof to the walls. In this comprehensive guide to blown-in insulation for your attic, we will explore the ins and outs of using spray foam and foam board to air seal your ceiling.

From its energy-saving capabilities to its cost-effectiveness, we’ll cover everything you need to know about blown-in insulation, including information about foam board and drywall. We’ll also discuss any potential concerns, such as asbestos, that may be associated with this type of insulation. In this blog post, we’ll discuss the step-by-step process of installing new insulation, focusing on wall insulation and ceiling insulation. We’ll cover important areas such as coverage and material options. We’ll address common issues that may arise during the job and provide tips for optimal results with the machine. Make sure to use enough water for optimal performance. Also, consider the impact of advertisement on the success of your job. Whether you’re looking to improve heat retention or reduce your carbon footprint, this guide will equip you with the necessary information to make an informed decision about adding blown-in insulation foam to your attic. The foam will effectively trap heat and reduce energy consumption. Additionally, it will help create a more comfortable living environment by preventing drafts and keeping the temperature stable. With the right foam insulation, you can enjoy lower energy bills and a greener home. Don’t let your attic become a source of energy loss – invest in foam insulation today!

Understanding Blown-In Insulation

Blown-in foam insulation is a highly effective method of insulating your attic space. Lights can be added to enhance visibility in the area. Hiring a professional contractor ensures proper installation of the insulation in your wall. It involves using new insulation materials, such as foam, to create a seamless layer that reduces heat transfer and improves energy efficiency in your home. This can be achieved with blown fiberglass or blown cellulose.

Blown-In Insulation Process

The installation process for blown-in insulation requires a specialized contractor, specialized equipment, and techniques. The contractor uses foam to fill the spaces between walls and ceilings, ensuring proper insulation. They also install lights and vents to enhance the overall efficiency of the insulation system. First, the chosen foam insulation material is loaded into a machine that breaks it down into small particles. These particles are then blown into the desired area through a vent. Then, with the help of a high-powered blower, the new insulation particles, such as cellulose insulation or foam, are blown into the attic space to improve ventilation.

This process uses foam to blow insulation material into every nook and cranny of your attic, effectively sealing any gaps or cracks and creating a uniform layer. It ensures that things are properly insulated and vented. The result is an air-tight barrier that prevents heat loss during the winter and heat gain during the summer, thanks to blown insulation and foam. Additionally, this barrier helps to prevent ice dams from forming on the roof.

Benefits of Blown-In Insulation

One of the key benefits of blown-in foam insulation is its ability to provide excellent thermal performance. The foam acts as a barrier, preventing air from escaping through vents or gaps in the walls. This helps to maintain a comfortable indoor climate and reduce energy costs. Additionally, the foam insulation can also help to prevent ice dams from forming on the roof during colder months. Overall, blown-in foam insulation is a highly effective solution for improving energy efficiency and maintaining a comfortable living environment. The blown insulation, whether it’s loose particles or foam, perfectly fills cavities and irregular shapes, leaving no gaps for air to escape or enter. This significantly reduces energy loss and helps maintain a comfortable temperature inside your home year-round. Additionally, the foam insulation helps to vent and blow air effectively.

Another advantage of blown-in insulation, also known as ic insulation, is its cost-effectiveness. Compared to other types of insulation, such as batts or rolls, blown-in insulation requires less labor-intensive installation. The efficient use of materials also means you can achieve higher R-values (a measure of thermal resistance) without adding excessive bulk to your attic space.

Blown-in insulation offers superior soundproofing properties by reducing noise transmission between rooms and from outside sources. It acts as an effective barrier against external sounds like traffic noise or neighborhood activities, creating a quieter living environment within your home.

Air Sealing with Blown-In Insulation

Blown-in insulation not only provides thermal protection but also helps in air sealing your attic space. As the loose particles settle, they form a dense layer that effectively blocks air movement. This prevents drafts and minimizes the infiltration of outdoor pollutants, allergens, and pests into your living spaces.

Furthermore, blown-in insulation is an environmentally-friendly choice. Both blown fiberglass and blown cellulose are made from recycled materials, reducing waste and promoting sustainability. By opting for blown-in insulation, you can contribute to a greener future while enjoying the benefits of improved energy efficiency in your home.

Benefits of Blown-In Attic Insulation

Blown-in insulation is a popular and effective method for insulating attics. It offers several benefits that can greatly improve the energy efficiency and comfort of your home. Let’s explore some of the key advantages of using blown-in attic insulation.

Improved Energy Efficiency

One of the primary benefits of blown-in insulation is its ability to improve energy efficiency in your home. By reducing heat loss or gain through the attic, this type of insulation helps to create a more comfortable indoor environment while also reducing energy consumption. The added layer of insulation acts as a barrier, preventing hot or cold air from escaping or entering your home.

Consistent Temperatures Throughout the Home

Blown-in insulation helps to maintain consistent temperatures throughout your home. By sealing any gaps or cracks in your attic, it prevents drafts and ensures that conditioned air stays inside during both summer and winter months. This means that you won’t have to constantly adjust your thermostat in an attempt to achieve a comfortable temperature in different areas of your house.

Soundproofing Benefits

In addition to improving energy efficiency, blown-in insulation also provides soundproofing benefits. The dense material absorbs sound waves, reducing noise transmission between rooms and floors. This can be particularly beneficial if you live in a noisy neighborhood or have rooms that require extra privacy, such as home offices or bedrooms.

Environmental Friendliness

Blown-in attic insulation is an environmentally friendly choice for homeowners. It is typically made from recycled materials such as cellulose fibers or fiberglass, which reduces waste and promotes sustainability. By choosing blown-in insulation, you are not only improving the comfort and energy efficiency of your home but also making a positive impact on the environment.

Cost Savings

Investing in blown-in attic insulation can lead to long-term cost savings. With improved energy efficiency, you can expect reduced heating and cooling costs throughout the year. The initial investment may be recouped over time through lower utility bills, making it a financially wise decision for homeowners.

Easy Installation

Blown-in insulation is relatively easy to install, especially when compared to other insulation methods. Trained professionals use specialized equipment to blow the insulation into your attic, ensuring even coverage and proper sealing. The installation process is quick and efficient, minimizing disruption to your daily routine.

Types of Blown-In Insulation Materials


Fiberglass is a popular choice for blown-in insulation due to its affordability and effectiveness. It is made from tiny strands of glass that are spun into fibers. These fibers create air pockets, which help to trap heat and provide excellent thermal insulation. Fiberglass blown-in insulation can be easily installed in attics, walls, and floors.


Another commonly used material for blown-in insulation is cellulose. This type of insulation is made from recycled paper that has been treated with fire-retardant chemicals. Cellulose offers excellent thermal performance and is known for its ability to reduce energy costs by preventing heat loss or gain. It can also help improve soundproofing in homes.

Mineral Wool

Mineral wool, also known as rock wool, is a versatile option for blown-in insulation. It is made from natural minerals such as basalt or diabase, which are melted down and spun into fine fibers. Mineral wool provides superior fire resistance properties, making it an ideal choice for areas where fire safety is a concern. It offers excellent sound absorption capabilities, reducing noise transmission between rooms.

Blown-in insulation materials offer various benefits depending on the specific needs of your home. Fiberglass insulation provides cost-effective thermal insulation, while cellulose offers eco-friendly options using recycled materials. Mineral wool excels in both fire resistance and sound absorption properties.

When choosing the right blown-in insulation material for your attic or home, consider factors such as budget constraints, desired thermal performance levels, environmental impact preferences, and any specific requirements like fire resistance or noise reduction.

It’s important to note that professional installation of blown-in insulation is recommended to ensure proper coverage and maximum efficiency. Trained installers have the expertise to assess your home’s needs accurately and determine the appropriate amount of insulation required.

Preparing Your Attic for Insulation Installation

To ensure a successful installation of blown-in insulation in your attic, there are several important steps you need to take. By following these guidelines, you can maximize the effectiveness and efficiency of your insulation while also preventing any potential issues down the line.

Clearing the attic of debris and obstructions

Before installing blown-in insulation, it is crucial to clear your attic of any debris or obstructions. This includes removing any old insulation that may be present, as well as clearing out any objects or materials that could hinder the installation process. By creating a clean and open space, you provide a smooth surface for the new insulation to be installed.

Sealing air leaks for optimal performance

One key factor in ensuring the effectiveness of your blown-in insulation is sealing any air leaks in your attic. Air leaks can significantly reduce the efficiency of your insulation by allowing conditioned air to escape and outside air to enter. To prevent this, carefully inspect your attic for any gaps or cracks in walls, ceilings, or around ductwork. Seal these areas using appropriate materials such as caulk or weatherstripping to create an airtight seal.

Establishing proper ventilation

Proper ventilation is essential when insulating your attic. Without adequate ventilation, moisture can accumulate in the space, leading to mold growth and other moisture-related issues. To establish proper ventilation, consider installing vent chutes between roof rafters to allow airflow from soffit vents into the attic space. Ensure that recessed lights are properly insulated and that there is sufficient clearance around them to prevent overheating.

Additional considerations

When preparing your attic for blown-in insulation installation, it’s important to take into account specific elements within the space:

  • Wall cavities: If you have wall cavities adjacent to your attic space, consider insulating them as well to improve overall energy efficiency.
  • Water heater: If your water heater is located in the attic, make sure it is properly insulated to prevent heat loss.
  • Utility bills: By properly insulating your attic, you can significantly reduce your utility bills by improving energy efficiency.

Taking the time to prepare your attic for blown-in insulation installation will ensure optimal performance and long-term benefits. By clearing debris, sealing air leaks, and establishing proper ventilation, you can create a well-insulated space that enhances comfort and energy efficiency in your home.

Cost Factors for Blown-In Insulation

There are several cost factors to consider. Understanding these factors can help you budget and plan accordingly for this home improvement project.

Size and Accessibility of the Attic

The size and accessibility of your attic play a significant role in determining the overall cost of blown-in insulation. A larger attic will require more insulation material, which can increase the total expenses. If your attic is difficult to access or has limited space for maneuvering, it may require extra labor and time, leading to higher costs.

Type and Quantity of Insulation Material

The type and quantity of insulation material required also impact pricing. Different types of blown-in insulation materials have varying costs per square foot. For instance, cellulose insulation tends to be more affordable compared to fiberglass or spray foam options. The amount of insulation needed depends on factors such as climate conditions, desired R-value (thermal resistance), and existing levels of insulation.

Additional Factors

In addition to the size and type of material, there are other factors that contribute to the overall cost of blown-in insulation:

  1. Labor Costs: Hiring professionals for installation adds to the expenses. The complexity of the job, including any necessary repairs or modifications before installation, can affect labor costs.
  2. Equipment Rental: Blown-in insulation requires specialized equipment like blowers or machines for proper installation. If you choose not to rent this equipment yourself, you may need to factor in additional costs incurred by professionals renting them.
  3. Repairs: Before installing blown-in insulation, it’s essential to address any existing issues in your attic such as leaks or structural damage. Repairing these problems beforehand can prevent future complications but may add extra costs.

Considering all these factors is crucial when estimating the cost of blown-in insulation for your attic. It’s recommended that you consult with professionals who can assess your specific needs and provide accurate cost estimates.

By investing in blown-in insulation, you can potentially save on energy bills by improving the thermal efficiency of your home. Proper attic insulation helps to create a barrier that prevents heat transfer, keeping your home cooler in summer and warmer in winter.

Enhancing Attic Insulation Performance

To further improve the energy efficiency of your attic insulation, there are a few additional measures you can take. These include adding a radiant barrier, air sealing gaps and cracks, and increasing the thickness or density of the insulation.

Adding a Radiant Barrier

One effective way to enhance attic insulation performance is by incorporating a radiant barrier. A radiant barrier is a reflective material that helps to reduce heat transfer through radiation. It works by reflecting radiant heat away from the attic, preventing it from entering your living space.

By installing a radiant barrier alongside your existing insulation, you can significantly reduce the amount of heat that enters your home during hot summer months. This can result in lower cooling costs and improved overall energy efficiency.

Air Sealing Gaps and Cracks

Another crucial step in maximizing insulation effectiveness is air sealing gaps and cracks in your attic. Even with proper insulation, air leaks can still occur through small openings around pipes, electrical wires, vents, or other penetrations in the ceiling.

These air leaks allow warm or cool air to escape from your living space while allowing outside air to enter. By properly sealing these gaps and cracks with caulk or weatherstripping, you can prevent unwanted air movement and maintain consistent indoor temperatures.

Air sealing not only enhances energy efficiency but also improves indoor comfort by reducing drafts and minimizing the entry of dust, pollen, and other allergens into your home.

Increasing Insulation Thickness or Density

If you find that your current attic insulation is insufficient for optimal thermal resistance, consider increasing its thickness or density. This will provide better protection against heat transfer between your living space and the outside environment.

For fiberglass batt insulation users, adding an extra layer on top of existing batts can increase its R-value (thermal resistance) and improve overall energy efficiency. Alternatively, cellulose insulation offers higher density than fiberglass batts and can be blown into attics to achieve greater thermal resistance.

By increasing the thickness or density of your attic insulation, you can create a more effective barrier against heat flow. This helps to keep your home cooler in summer and warmer in winter, reducing the strain on your HVAC system and potentially lowering energy bills.

Incorporating these strategies into your attic insulation plan can greatly enhance its performance and improve overall energy efficiency. By adding a radiant barrier, air sealing gaps and cracks, and increasing the insulation’s thickness or density, you can create a more comfortable living environment while saving on energy costs.

Maintenance and Longevity of Blown-In Insulation

Blown-in insulation is a popular choice for homeowners looking to improve the energy efficiency of their homes. Once properly installed, this type of insulation requires minimal maintenance, making it an attractive option for those seeking long-term solutions to reduce energy costs and increase comfort.

Regular inspections are important to ensure that the blown-in insulation in your attic remains in good condition over time. These inspections can help identify any signs of damage or settling that may have occurred. By addressing these issues promptly, you can prevent further damage and maintain the effectiveness of your insulation.

If you notice any areas where the blown-in insulation appears compressed or uneven, it may be a sign that settling has occurred. This can happen over time as the insulation naturally settles under its own weight. While some settling is normal, excessive settling can reduce the effectiveness of the insulation and compromise its ability to provide optimal thermal resistance.

To address settling or other issues with your blown-in insulation, it is recommended to consult professionals who specialize in attic insulation services. They have the expertise and equipment necessary to assess the condition of your insulation and make any necessary repairs or upgrades.

In addition to regular inspections, it is also important to address any air leaks in your attic. Air leaks can undermine the performance of your blown-in insulation by allowing warm air to escape during winter months and hot air to enter during summer months. This can lead to increased energy consumption and reduced comfort levels in your home.

To identify air leaks, you can conduct a visual inspection of your attic or hire professionals who specialize in energy audits. They use specialized tools such as thermal cameras or smoke pencils to detect areas where air leakage may occur. Once identified, these air leaks can be sealed using methods such as foam insulation, fiberglass insulation, or spray foam.

By maintaining regular inspections and addressing any issues promptly, you can ensure that your blown-in insulation continues to perform effectively for years to come. This not only helps reduce energy costs but also improves the overall comfort of your home.


Congratulations! You’ve reached the end of our journey through blown-in insulation for your attic. We’ve covered a lot of ground, from understanding the benefits and types of blown-in insulation materials to preparing your attic for installation and enhancing its performance. Now that you’re armed with all this knowledge, it’s time to take action and make your home more energy-efficient.

By adding blown-in insulation to your attic, you’ll not only save on energy costs but also contribute to a greener environment. So go ahead and schedule a consultation with a professional insulation service provider. They’ll help you determine the best type of blown-in insulation for your needs and ensure that the installation is done properly.

Remember, a well-insulated attic is like a cozy blanket for your home, keeping you warm in the winter and cool in the summer. Don’t let all that precious air escape through your roof! Take the next step towards a more comfortable and energy-efficient home today.

Frequently Asked Questions

What is blown-in insulation?

Blown-in insulation is a type of insulation material that is installed by blowing it into the desired area, such as an attic. It consists of loose fibers or particles, usually made of materials like fiberglass or cellulose, which fill the space and create a barrier against heat transfer.

Why should I consider adding blown-in insulation, such as fiberglass batts or spray foam, to my attic? Blown-in insulation is a great option for improving energy efficiency and reducing heat loss. It can be easily installed between the joists or layered on top of existing insulation, providing a seamless and effective barrier against air leaks. Whether you choose fiberglass batts, spray foam, or foam board, adding blown-in insulation to your attic is a smart investment that can help lower your energy bills and improve the comfort of your home.

Adding blown-in insulation to your attic can provide several benefits. It helps improve energy efficiency by reducing heat loss and gain, resulting in lower heating and cooling costs. It also enhances comfort by maintaining more consistent temperatures throughout your home and can even help reduce noise transmission from outside.

How does blown-in insulation work?

Blown-in insulation works by creating a layer of material with high thermal resistance in your attic. This layer acts as a barrier, preventing the transfer of heat between the inside and outside of your home. The insulating material traps pockets of air, which slow down the movement of heat, keeping your home cooler in summer and warmer in winter.

Is blown-in insulation suitable for all types of attics, including those with fiberglass batts, spray foam, foam board, or asbestos?

Blown-in insulation is versatile and can be used in various types of attics, including those with irregular shapes or limited access points. Its flexibility allows it to conform to different spaces, ensuring thorough coverage and effective insulation. However, it’s always best to consult with a professional to determine the most suitable type of insulation for your specific attic.

Can I install blown-in insulation myself or should I hire a professional contractor for spray foam, fiberglass batts, or foam board installation?

While some homeowners may choose to install blown-in insulation themselves, hiring a professional service is recommended for optimal results. Professionals have the expertise and equipment necessary to ensure proper installation and coverage throughout your attic. They can also assess any potential issues or areas that require additional attention to maximize energy efficiency.


Expert blown-in insulation service for your attic. DIY guide & cost. Get professional results with our step-by-step instructions.