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5 Best Attic Insulation Options In 2024 (Pros & Cons) 

Posted on : April 17, 2024

5 Best Attic Insulation Options In 2024 (Pros & Cons) 

Proper attic insulation is necessary for maintaining a comfortable temperature inside your home. Without adequate insulation, your home may lose heat during winter and allow unwanted heat in during the summer.

With years of experience in the roofing industry, at McClellands Contracting and Roofing, we always try to provide homeowners with insights into crucial aspects of their properties. 

In this blog post, we will cover:

  • Factors To Consider Before Insulating Your Attic
  • Five Best Attic Insulation Options
  • How Much Attic Insulation Costs
  • Frequently Asked Questions

Key Factors To Consider Before Adding Attic Insulation

Before knowing the best attic insulation options, there are a few considerations to keep in mind.

Insulation Material

Numerous attic insulation materials are available, each with its own advantages and drawbacks. Research well and choose the insulation material that best suits your requirements. 


The R-value estimates the insulation material's ability to resist heat flow. A higher R-value indicates better insulation performance, keeping your home’s temperature balanced in both the winter and summer. The recommended R-value for attic insulation varies depending on your area’s climatic condition and local building codes. 

Generally, an R-value between R-30 and R-60 is suitable for most regions. Ensure you choose the best attic insulation with an appropriate R-value to maximize energy efficiency and comfort.

Air Sealing

Air leaks in your attic can minimize the effectiveness of insulation. Before installing new insulation, it's essential to seal any openings or gaps on your attic floor, walls, and around pipes or electrical fixtures. 


While insulation is vital for energy efficiency, it's equally important to ensure adequate ventilation in your attic. Balancing insulation and ventilation is key to creating a healthy and energy-efficient living environment. Lack of accurate ventilation can result in moisture buildup, which can damage the insulation in your attic and lead to mold and mildew growth, affecting the structural integrity of your home. 

5 Best Attic Insulation Options 

There are many attic insulation options available on the market. Here’s a list of five commonly used options.  

1. Loose-fill and Blown-in Insulation

Loose-fill and Blown-in Insulation

Loose-fill and blown-in insulation are some of the best insulation options for attic spaces. This insulation is perfect for existing attics because it can be easily added into open spaces and around any obstacles. You can choose from different materials like cellulose (made from recycled paper), fiberglass, or mineral wool.

Cellulose is an eco-friendly and cost-effective insulation for attics. Fiberglass and mineral wool are also popular choices because they are good at keeping heat in or out and resist moisture and pests.

Special equipment blows the loose-fill material into the attic spaces, ensuring it covers everything evenly. This maximizes the insulation's ability to stop heat from escaping or entering your home.

2. Spray Foam Insulation

Spray Foam Insulation

Spray foam insulation is another standard option for your attic. It is sprayed directly onto the attic surfaces, creating a continuous, airtight layer. Two major types of spray foam insulation are open-cell and closed-cell. 

Open-cell is more affordable and provides good insulation, while closed-cell offers better heat resistance, moisture resistance, and structural strength.

A big advantage of using spray foam insulation is that it seals any air leaks and cracks, making your home more energy-efficient. It can also fit into irregular shapes and fill cavities, which is perfect for attics with odd layouts or obstructions.

3. Fiberglass Batt and Roll Insulation

Fiberglass Batt and Roll Insulation

Fiberglass batt and roll insulation is a common and budget-friendly option. This insulation comes in pre-cut batts or long rolls, making it easy to fit between the framing members, like joists and trusses, in your attic.

Fiberglass insulation is good at resisting heat flow and it's relatively inexpensive compared to other materials. It also doesn't burn easily and doesn't promote mold growth, which makes it a safe choice for attics.

When installing fiberglass batts or rolls in your attic, it's important to ensure they fit snugly and seal any gaps around obstacles or edges. This prevents air leaks and helps the insulation work as well as possible.

4. Mineral Wool Batt and Roll Insulation

Mineral Wool Batt and Roll Insulation

Mineral wool insulation comes in batts and rolls and is a suitable option for attic insulation. Mineral wool is made of natural rock materials like basalt or slag, and it provides excellent insulation against heat and sound.

A key benefit of mineral wool insulation is that it is fire-resistant and won't burn or help spread flames. This makes it a safer choice for attics where fire safety is a concern. Mineral wool also resists moisture and mold growth, ensuring it will perform well in areas that may have condensation or high humidity.

5. Structural Insulated Panels (SIPs)

Structural Insulated Panels (SIPs)

Structural insulated panels (SIPs) are a specialized insulation solution that can be used in new construction or significant renovation projects. SIPs are prefabricated panels with an insulation core between two pieces of sturdy material, like oriented strand board (OSB).

SIPs provide superior and consistent insulation for attics compared to traditional building methods. They are highly energy-efficient, reducing heat transfer.

Installing SIPs in your attic requires specialized skills and construction techniques, as the panels need to be fitted together to form the attic structure. However, once installed, SIPs offer excellent thermal performance and air-tightness, ensuring a well-insulated and comfortable living space.

Estimated Cost of Each Attic Insulation Material

MaterialEstimated Cost per square feet(Professional Insulation)
Loose-fill and Blown-in Insulation
$1 - $3
Spray Foam Insulation
$3 - $7
Mineral Wool Batt and Roll Insulation
$1.40 - $4
Fiberglass Batt and Roll Insulation
$0.40 - $1.50
Structural Insulated Panels (SIPs)
$17 - $30

Call Us To Discuss Your Roofing Project In Pittsburgh

If you're looking for the best insulation for your attic in Pittsburgh, it’s time to call McClellands Contracting and Roofing. With years of experience providing top-quality work and excellent customer service to homeowners in the Pittsburgh area, we can handle all your roofing needs and questions.

Our team of dedicated professionals will thoroughly inspect your attic to determine the insulation requirements. Based on your attic's structure, we'll provide you with a customized quote. Then, we'll create a tailored insulation solution specifically for your home. Our goal is to help you achieve the best indoor air quality by installing an effective roofing system and attic insulation that keeps your home comfortable year-round.

We offer free estimates on our services, feel free to call us today at (412) 353-5660!

Frequently Asked Questions

A. According to the Environmental Protection Agency, homeowners can significantly reduce their heating and cooling expenses by properly insulating their homes. By adding insulation to areas such as attics and basements, homeowners could save an average of 15% on their energy bills. This translates to approximately an 11% reduction in their overall energy bills!

A. If you're looking to insulate your home with fiberglass or mineral wool batts or rolls, you may be able to do the work yourself and save some money. However, there is a chance that you will make mistakes while insulating your attic on your own, leading to moisture buildup. For insulation types like spray foam that need special equipment and training, you'll need to hire a professional to ensure it's properly installed.

A. The recommended R-value will vary depending on your climate zone and local building codes. An R-value between R-30 and R-60 is recommended for most homes. It's essential to consider factors like your region's climate and local building codes when selecting the right insulation for your attic. By opting for an insulation material with the correct R-value, you can enhance energy efficiency and ensure a comfortable indoor environment.

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