Spray Foam Insulation vs. Batt Insulation

When it comes to improving your home’s energy efficiency, you have many different options. Both spray foam insulation and batt insulation can be great ways to reduce energy costs while also keeping your home comfortable year-round.

When choosing between these two insulation types, however, you’ll need to consider a variety of factors before making a final decision. This article will go over the similarities and differences between spray foam insulation and batt insulation so you can make the best decision for your home.

What is Spray Foam Insulation?

Spray-foam insulation is a type of insulation that is applied via a special spray gun to the interior walls of a building. When combined with a special liquid resin, the insulation expands and hardens, forming a seal around the building’s framing.

It is generally applied to cavities, voids, and cracks in the walls and ceilings of a structure’s exterior in order to increase energy efficiency. Spray foams also have excellent thermal resistance and are able to withstand extreme temperatures.

These qualities make spray foams ideal for certain applications and environments, including high-temperature, high-moisture, and very cold areas. Lastly, it is also highly resistant to moisture, making it ideal for use in homes that experience high humidity and/or flooding.

What is Batt Insulation?

Batt insulation or fiberglass insulation is a type of insulation that’s primarily made of glass fibers. This insulation is typically installed in ceilings, but it can also be installed in walls.

This type of insulation is available in both loose-fill and rolled varieties. Most of the time, rolled insulation is used for new construction, while loose-fill insulation is put in walls and attics that are already there.

One of the biggest benefits of batt or fiberglass insulation is that it’s widely available and easy to find at local hardware stores. Because fiberglass insulation is widely available, it’s also a very cost-effective option.

Spray Foam and Fiberglass Insulation Comparison

Spray foam insulation vs. fiberglass insulation is a common debate among homeowners who are deciding on the best insulation to use in their home. While spray foam and fiberglass insulation both have their advantages, it is important to note that they are used in different ways. Here is a breakdown of the similarities and differences between these two insulation types.

R-Value

One of the main considerations when comparing spray foam insulation with batt insulation is the level of R-value each type of insulation has. The R-value of a material is a measurement of its capacity to resist heat flow.

The higher the R-value, the better the insulation and the more effective it is at stopping heat transfer. Spray foam insulation approximately has R-6, whereas fiberglass insulation has an R-value of between R-3.8 and R-5.

In general, fiberglass insulation is less effective at stopping heat transfer than spray foam insulation. This makes spray foam insulation a better choice when it comes to energy efficiency.

Resistance To Moisture

Another important factor to consider when comparing spray foam insulation with batt insulation is the level of moisture resistance each type of insulation has. 

Batt insulation is actually an effective moisture barrier, making it a great choice for use in attic insulation. However, because it is applied to a surface and does not expand like spray foam, it does not seal areas as tightly as foam insulation. 

Spray foam insulation has an excellent level of moisture resistance and is commonly used in areas that are prone to high moisture and flooding, such as boat interiors and coastal homes. This makes it a better insulating material in areas where moisture is an issue.

Durability

Spray foam and batt insulation both have a high level of durability, making them a great choice for long-lasting insulation. However, because spray foam is applied as a thick liquid, it has a higher level of durability than fiberglass. The durability of batt insulation is largely dependent on the thickness of the material. 

Ease of Installation

Spray foam insulation vs. batt insulation also includes a comparison of how easy each of these insulation types is to install. In general, spray foam is much easier to install than batt insulation. This is because the foam is applied via a special gun.

Batt insulation, on the other hand, is applied manually, either by hand or with a machine. While both types of insulation are relatively simple to install, spray foam is much less time-consuming than batt insulation. 

Costs

Batt insulation is a less expensive option than spray foam insulation. However, depending on the thickness of the insulation, the cost of a project with spray-foam insulation can be similar to that of batt insulation.

It is important to note that when comparing the cost of insulation, it is important to look at the whole project, including the cost of tools and other materials.

Health Risks

While both types of insulation are great choices for home insulation, fiberglass insulation is generally considered to be safer than spray foam insulation. This is because spray foam contains a special type of chemical called isocyanate, which is toxic when inhaled.

For this reason, it is important to wear protective gear when installing spray foam insulation, or to hire a professional who knows exactly what they’re doing and what precautions and safety measures to take. 

Hire Epic Spray Foam To Install Your New Home Insulation

If you’ve decided what type of insulation you want to install in your home, hire Epic Spray Foam to do the work for you. We specialize in a wide range of energy-efficient insulation solutions.

Epic Spray Foam is a leading insulation contractor in Canton and the greater Atlanta area. We provide our clients with a comprehensive approach to advanced insulation techniques.

At Epic Spray Foam, we are committed to serving our clients’ needs and ensuring their satisfaction. We can provide you with a free in-home estimate, so you’ll have a good idea of how much the installation process will cost.

To learn more about the services we offer, make sure to get in touch with us at (833) 362-6489 or justin@epicsprayfoam.com.

Conclusion

Spray foam insulation and batt insulation are both effective at improving the energy efficiency of your home and reducing noise. 

As far as insulation types go, however, spray foam insulation is usually the best choice because it is more effective in extreme weather conditions and traps more heat than batt insulation. Spray foam insulation is also more expensive upfront, but it’s also more durable and less time-consuming to install than batt insulation. 

Overall, spray foam insulation and batt insulation are both good ways to make your home more energy efficient and quieter. 

20210811 114324

Insulating Outbuildings, Garages & Workshops: Why Spray Foam Is A Great Solution

Many homeowners focus on insulating their main living spaces but overlook areas like garages, workshops, and outbuildings. These spaces are often used for hobbies, storage, or work, but without proper insulation, they can become extremely hot in the summer, freezing in the winter, and susceptible to moisture problems. If you want to make these spaces more comfortable and energy-efficient, spray

Read More
large should you spray foam over your existing insulation 4

Spray Foam Myths vs. Facts: What Every Homeowner Should Know

Spray foam insulation is one of the most effective ways to improve your home’s energy efficiency, comfort, and air quality. Yet despite its many benefits, misconceptions about spray foam continue to circulate. Some homeowners worry about safety, cost, or long-term impacts, which can prevent them from making a choice that could save money and improve comfort for years. In this

Read More

Insulation Costs In 2026: What Homeowners In Metro Atlanta Should Expect

If you’re planning an insulation project in 2026, you are probably seeing a wide spread of prices online. The reason for this is that costs shift with material type, square footage, access points, removal needs, and the complexity of the project.  This pricing guide breaks down realistic ranges for common Metro Atlanta projects, so you can plan with confidence, ask

Read More
Building Science

The Science of Spray Foam Insulation: How It Works and Why It Outperforms Traditional Insulation

When most homeowners think about insulation, they picture something stuffed inside walls to keep the house warm or cool. But insulation performance is about far more than just filling space. It’s about how air, heat, and moisture move through your home, and this is where spray foam insulation stands apart. Understanding the science behind spray foam helps explain why it

Read More

Spray Foam Insulation Case Study: A 3,600-Square-Foot Custom New Build in Ball Ground, GA

When Becki Jo and her husband decided to build their forever home in Ball Ground, Georgia, they took a hands-on approach from day one. Ground broke in the spring of 2023 on a custom, 3,600-square-foot single-family home, and Becki Jo stepped into the role of general contractor for the entire project. With full responsibility for coordinating trades, timelines, and budgets,

Read More
spray foam attic ceiling. jpg

Is Spray Foam Insulation Safe Around Pets and Children?

When it comes to insulating your home, safety is just as important as energy efficiency, especially if you have children or pets. Spray foam insulation is one of the most effective insulation solutions available, but many homeowners understandably question if it’s safe around pets and children.  The short answer to that question is yes, when it is professionally installed, properly

Read More
pest management company

Winter-Proof Your Home: The Most Effective Attic Insulation For Georgia Homes 

North Georgia winters can be sneaky. Most days feel mild, then a sudden cold snap hits right as your holiday guests arrive. If your attic is under-insulated or leaking air, you feel it fast through chilly bedrooms, longer HVAC runtimes, and higher electric or gas bills. The good news, the right attic insulation strategy can stabilize temperatures, control humidity, and

Read More
electrical wiring

Is Spray Foam Safe Around Electrical Wiring?

If you are considering spray foam insulation, you may have heard questions about whether it is safe to apply around electrical wiring. The good news is that spray foam is approved and safe for use around standard electrical lines, including low-voltage wiring such as ethernet, doorbell, and thermostat cables. When installed correctly, spray foam can help create a more airtight,

Read More
block wall

Closed-Cell Spray Foam for Block and Concrete Walls: Benefits, Uses, and Limitations

When it comes to insulating block walls or concrete walls, closed-cell spray foam is one of the most effective solutions available. Many residential and commercial property owners are turning to closed-cell spray foam insulation for its ability to improve energy efficiency, add strength, and provide long-term protection.  But is this the right choice for your project? Let’s take a closer

Read More
fiberglass attic 2

Fiberglass Insulation 101: Common Problems and How To Avoid Them

Fiberglass is popular for a reason. It is affordable, easy to install, and widely available. But if your home still relies on older fiberglass batts or thin layers of blown-in fiberglass, you might be feeling drafts, uneven room temperatures, or noticing higher energy bills.  This guide explains the most common fiberglass insulation problems, how to spot them, and smart upgrades

Read More