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Why Insulation Is Beneficial In Steel Garage Buildings?

Two-thirds of all housing units in America have a garage or a carport. A recent U.S. Census Survey found that 92 % of Americans have at least one car. With that significant statistic, it becomes obvious to find a place for sheltering vehicles and a garage that lasts long. So, metal garages come to mind. With that comes the question of insulation.

Whether you should insulate your metal garage or not…this confusion is pretty common. But the answer is never straightforward. Well, we are aware of your dilemma. Hence, we are here to provide valid reasons for insulating your steel garage building. Shall we begin?

Metal garages 1
Steel garage; Image source pexels.com

How Does An Insulation Work For Commercial Metal Buildings?

Insulation is a process of cushioning or padding your metal panels with a specific material that does not allow heat to escape out or from entering. It does so by sealing the metal garage.

Is It Necessary To Install An Insulator In A Metal Garage?

Metal is a good conductor of heat. It means the chances of condensation are high. An insulator acts as a barrier to heat. It minimizes the flow of heat by

  • Reducing conduction – slows the movement of heat in the metal panels,
  • Reducing convection – slowing the circulation of heat in the steel panels &
  • Reducing radiation – slows down the path that heat takes to travel. 

Now that we are clear with the terminologies let’s dive into the advantages of insulating a steel garage.  

pexels jeffrey soh 4628583
garage insulation; Image credit: pexels.com

Some Common Insulators For Steel Garages Are

InsulatorCost per sq. ft.
Fiberglass$0.5 to $1.5
Spray foam$1.5 to $2.5
Insulated metal panels (IMPs)$5 to $10
Bubble foil
One-sided foil$0.10 to $0.30
Two-sided foil$0.15 to $1.10
Rockwool$1.40 to $4
Common insulator table

Steel Garage 1
Insulation steel Garage; Image source;pexels.com

Benefits Of Insulating Steel Garages

Temperature Control

Insulator minimizes heat from escaping out in winter and keeps indoors warm. Conversely, it reduces the escape of cool air from the metal building, preventing warm air from getting inside. This temperature control feature is essential for the proper functioning of the HAVC system. 

Without an insulator, your HAVC system must do more work to preserve temperature. More work means more power consumption. And that implies more energy bills. Temperature-sensitive items stored in your steel structure may malfunction.

Moisture Control

An adequate amount of insulator will break the thermal bridging. So heat won’t pass in and out of your commercial metal building. This will prevent moisture buildup, keeping your metal panel dry most of the time.

With no insulator, tiny water droplets will coagulate onto your metal panels. Over time, it will result in rusting. Thus, insulating helps regulate temperature and lengthens the life of your metal structure. 

Noise Control

Metal structures tend to exaggerate sound level. So, falling rain or hail on your metal buildings may sound too loud. An insulator in the attic & roof acts as a good absorbent. This diminishes the sound entering into your building.

Almost 55% of Americans spend 1 to 2 hours in their garage weekly working on their hobbies & projects. Imagine the noise from playing a musical instrument or DIY woodwork reaching your home & neighbors. They are not going to be delighted with it. A proper barrier will ensure that you continue with your hobbies without informing nearby people.  

Energy Saving

You can add white-facing or foil-facing insulators to brighten up your indoors. On the contrary, you can choose a dark color insulation which reduces the light within. Whether you want a dark or light interior, an insulator can help you achieve that. This will reduce the workload of lightning appliances, thereby saving you money.

You can take it to the next level by installing solar panels. You get free energy from the Sunbeam and an energy tax credit, too. That’s a great deal!

Ups The Resale Value

A metal garage adds more sq. ft. to your property. Further, it can be used as a storage unit or other multi-purpose. This boosts your property’s resale value. But for that, a garage has to be a functioning unit. A mere metal structure on your land won’t help. 

So, ensure that your garage retains its value by adding adequate thermal protection to it. With minimal upkeep, it will last for decades. Hence, it proves itself to be a good investment


Ensure your windows and doors are correctly sealed to prevent air leaks. For warmer weather, choose a metal panel with a lighter color as they reflect light. For colder weather, it is the opposite.

Insulation steel garage 4
Image source;getcarports.com

Taking R-value Into Consideration

Does R-value matter? The short answer is – Yes, it does. The higher the R-value, the greater its thermal resistance. As an example, an insulator with a value of R-30 is three times better than one with an R-value of R-10. So, a higher R-value is suggested for steel roofs, attics & commercial metal buildings.

To know more about how much insulator suits your metal garage, look at the zonal map presented by the 2021 International Energy Conservation Code. The higher the climate zone number, the more insulation you need.

The Final Analysis 

Having an insulator is a must for metal buildings. If you already have a steel garage installed without an insulator, you can catch and correct yourself at any time. Calling a professional insulator installer to get the job done would be helpful.

Insulators play a crucial role beyond simply protecting your metal garage. It prolongs its life as well. So, when buying a steel garage building, include insulators along with it. This will save you costs & labor charges that you would have to spend otherwise after installation work.

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