Should You Install Radiant Barrier In Your Attic?

As energy-efficiency measures have grown in popularity in recent years, many of our customers ask us about radiant barrier, and whether it is the best choice for their attic. Whether you’re building a brand new construction, or simply replacing the roof or attic of your existing home, radiant barrier can complement your insulation to regulate temperature and save you money year-round.

What Is Radiant Barrier?

A radiant barrier is a type of building material that reflects thermal radiation and reduces heat transfer. While it is not a substitute for insulation, this thin, mirror-like foil can work together with your insulation to keep your home more comfortable and energy efficient. A radiant barrier is typically installed in an attic with fiberglass installed on the floor. The radiant barrier is installed directly to the roof rafters.

What Are the Energy-Efficiency Benefits of Radiant Barrier?

Keeps Your Home Cool In Summer

During our many warm days here in Georgia, a home’s attic heats up to the point that too much air is being expelled, and not enough fresh air is coming in from the soffits. This puts a negative pressure on the entire home and the comfortable cool air that is being pumped within it. Outside air begins to get pulled inside from windows, doors, and other openings, increasing indoor humidity. This phenomenon is called the Stack Effect. By encapsulating your attic with a spray foam solution, you can essentially put a “lid” on your home and effectively stop the stack effect, as well as keep excessive moisture and allergens out.

Radiant barriers are also highly effective in warm climates, and can make a great complement to fiberglass insulation, especially when cooling air ducts are located in the attic. Due to its reflective, low-emittance surface, a radiant barrier reflects heat radiation, preventing transfer from one side of the barrier to another. According to the Department of Energy, radiant barriers can reduce cooling costs by as much as 5-10% in the warmer months.

Keeps Your Home Warm in Winter

While radiant barriers are best known for their benefits in hot climates, they can also help keep warm air in during the colder months. These barriers work especially well with fiberglass insulation, because it already has a high R-value.cSpray foam insulation has the ability to block outside air and moisture, keeping an attic clean, dry, and comfortable throughout the coldest months of the year.

Should a Radiant Barrier be Installed?

With all the advancement in the technology of spray foam insulation in recent years, radiant barrier is not essential. In our experience, by the time a homeowner pays for the additional cost of a radiant barrier installation, they could have received a much better return on their investment with spray foam alone. For this reason, we very rarely suggest radiant barrier after assessing a new construction or existing home.

Let Epic Spray Foam Assist In Your Energy-Efficiency Efforts

The combination of spray foam insulation and an encapsulated attic can be a match made in energy-efficiency heaven! The two systems can work together to create a more environmentally-friendly and cost-effective solution to keep your home at a comfortable temperature in all seasons. However, while radiant barriers really are yesterday’s technology, spray foam is here now and for the future!

The effectiveness of both spray foam insulation and radiant barrier depends on proper installation, so it’s best to use a dependable and experienced professional. As a leading insulation contractor in Georgia, Epic Spray Foam is committed to excellent quality, service, and safety. We can complete a free on-site assessment of your property and provide a recommendation tailored to your home’s unique insulation needs.

Give us a call at (833) 362-6489 to schedule your free estimate today!

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