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What is the Best Type of Insulation for a Metal Garage?

What is the Best Type of Insulation for a Metal Garage?

Steel Garage Insulation

If you’re the new owner of a metal garage or are considering purchasing one, insulation will likely be a significant part of the installation process. At least, if you expect to use it for anything other than general storage, that is. Proper metal garage insulation is critical to reducing moisture buildup and regulating the internal temperature of the structure.

So, whether you’re using your steel garage to store the family vehicle or you’re designing a guest house or mother-in-law suite, you’ll need to ensure it’s insulated with the right type of insulation. In this blog, we’ll explore this in greater detail and provide you with useful information that can help you pick the right metal garage insulation for your climate and needs.

How Does Metal Garage Insulation Work?

Metal garages are known for their durability and strength, but they often lack inherent insulation properties. Insulating a steel garage is essential to regulate temperature, reduce energy consumption, and enhance overall comfort.

In an uninsulated building, heat energy from the sun can heat the interior of the structure, causing uncomfortable temperatures and an overabundance of moisture. Conversely, during the winter, the structure will lack the ability to maintain heat, causing additional strain on any items you may store due to wildly fluctuating temperatures.

Insulation works by reducing heat transfer and minimizing the presence of moisture. These insulating materials are placed between the metal studs or joists, creating a thermal barrier that helps to prevent the transfer of heat.

The Benefits of Insulating a Metal Garage

Insulating your metal garage is a game-changer when it comes to transforming its feel and functionality. What may be a cold, drafty metal building can be transformed into a comfortable, energy-efficient structure. But what does that look like, and how does it work? Let’s explore what insulating your steel garage can do for the overall comfort and longevity of your building.

Reduces Condensation

Metal structures are prone to temperature differentials that can lead to condensation buildup. Insulating a metal building effectively combats this issue by creating a barrier that regulates temperature, minimizing the risk of condensation. This is crucial for preventing rust and corrosion preserving the integrity and longevity of your metal garage.

Stabilizes Your Building’s Temperature

Metal garages can be subject to temperature extremes, with interiors becoming unbearably hot in the summer and uncomfortably cold in the winter. Insulation acts as a thermal barrier, stabilizing the internal temperature and creating a more comfortable environment year-round.

Absorbs Sound

A metal garage can often be a noisy place, with echoes and reverberations bouncing off the hard surfaces. Insulating materials, especially those designed to absorb sound, can significantly reduce noise levels. This is particularly beneficial if your metal garage doubles as a workspace or if you want to create a quieter environment.

Energy Savings

One of the most compelling reasons to invest in metal garage insulation is the potential for significant energy savings. Insulation helps regulate temperature, reducing the need for excessive heating or cooling. This, in turn, lowers energy consumption and leads to cost savings on utility bills. It’s an eco-friendly choice that benefits both your wallet and the planet.

Minimizes Moisture

Moisture infiltration can be a persistent issue in metal buildings, leading to a host of problems, including mold and mildew growth. Insulation acts as a barrier against moisture, preventing it from seeping into the structure. By minimizing moisture, you not only protect your belongings but also create a healthier indoor environment.

The 5 Best Options for Metal Garage Insulation

Now that we’re familiar with how insulation works and the advantages it may bring to your metal garage project, let’s break down the five best insulation options to see which is right for you:

Reflective Foil

Reflective foil insulation is an excellent choice for metal garages exposed to direct sunlight. Comprised of layers of foil and plastic materials, this insulation reflects radiant heat away from the structure, preventing excessive temperature buildup. It’s easy to install and provides an effective barrier against heat transfer, making it ideal for climates with high sun exposure.


Fiberglass insulation, available in rolls or batts, is a classic and cost-effective option for insulating metal garages. It fits snugly between metal studs or joists, creating a thermal barrier that hinders heat transfer. Fiberglass is versatile, easy to handle, and widely accessible, making it a popular choice for DIY projects or professional installations.

Insulated Panels

For those seeking a more comprehensive solution, insulated panels offer an all-in-one solution for walls and roofing. These panels come prefabricated with an insulating core, typically made of foam or other insulating materials, sandwiched between two metal layers. Insulated panels provide excellent thermal resistance and are a convenient option for those looking to streamline the installation process.

Rigid Board

Rigid board insulation, often made from materials like expanded or extruded polystyrene, is a durable and moisture-resistant option. It provides a continuous and solid insulation layer that is effective in preventing heat transfer. Rigid board insulation is known for its stability and can be a good choice for those looking for long-term performance.

Spray Foam

Spray foam insulation is a versatile and effective option for insulating metal garages. It comes in two types: open-cell and closed-cell. Open-cell spray foam is lightweight and provides excellent sound absorption, while closed-cell spray foam is denser and offers superior insulation. The foam adheres to surfaces, creating a seamless and airtight barrier that not only insulates but also helps seal gaps and cracks.

Double Bubble

Double bubble insulation consists of two layers of reflective foil with a layer of air bubbles sandwiched in between. This design enhances its thermal resistance while remaining lightweight and easy to install. Double bubble insulation is particularly effective in reflecting radiant heat, making it a suitable option for hot climates.

Buy Your Insulated Metal Garage from Get Carports Today!

With years of experience in the industry and a track record for excellence, Get Carports is proud to be a trusted provider of carports, metal buildings, and steel garages of all shapes and sizes. Our products are built with modern engineering techniques and designed by some of the best and brightest in the business. We back our structures up with professional installation and customer service that extends far beyond your initial purchase.

It doesn’t matter whether you’re looking for a small backyard metal garage to house the family lawnmower or you’re designing a fully-stocked entertainment room, Get Carports has you covered with a distinctive lineup of buildings.

So, what are you waiting for? Contact Get Carports today at (800) 691 5221 and let our experts help you. We’ll walk you through the design process, help you customize it to fit your needs, and deliver a building that will serve you for decades to come. Call Get Carports, and get your carport today.

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