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How does RadiaSource™ work?

NASA utilizes the same technology as RadiaSource™ to act as a heat shield to protect their astronauts and space equipment. As in the space program, by adding low-emittance RadiaSource™, the heat that seeks to escape from a structure when it's cold is reflected back in. The heat that seeks to enter a structure when it's hot is reflected back out. Buildings, therefore, stay warmer in the winter and cooler in the summer, which makes living conditions much more comfortable and causes utility bills to drop.


How does installation work with RadiaSource™?

From outside, you can't see RadiaSource™ in your attic, but it works just like the reflective layer in a space suit. RadiaSource™ is installed on the rafters, directly over the mass insulation on your attic floor, or both in the rafters and on the floor. The installation on the rafters has been shown to be more effective in the heat, and installation on the attic floor more effective in the cold. Installing in both the rafters and the floor is the most effective way to install RadiaSource™.


What is the difference between an R-Value and an E-Value? Why is E-Value important?

Most people have heard of an insulation's R-Value. R-Value measures how well insulation resists heat transfer. E-Value measures the reflectivity of materials.

 

Measuring with R-value can be compared to a sponge and water. If you put a sponge under a running tap, what will it do? It will absorb or "resist" it for a moment but eventually the water flows through it. A thicker sponge will slow down the water, but cannot stop it. The same is true with traditional insulation. You can always add more traditional insulation and slow down heat transfer, but it still can't reflect the heat out of your home.

 

There is another way to rate insulation. There is also an E-value, which measures the thermal emittance of materials. Emittance is the value given to materials based on the ratio of heat emitted, on a scale of 0 to 1. A high emittance material is one that absorbs and emits a lot of heat. A low emittance material does not absorb or emit heat. Every material on earth has an emittance. A materials reflectivity rate is inversely related to emittance and when added together their total equals 1. For example, if a material has an emittance of 0.04, then it absorbs and emits only 4% and reflects 96% of radiant heat. Fiberglass and cellulose have an emittance of 0.8 - 0.9, which means it absorbs and emits 80 - 90% of radiant heat and reflects only 10 - 20%.

 

This high absorption rate and low reflectivity of traditional insulation materials offers little protection from heat transfer. In the summer, the absorbed heat in fiberglass/cellulose continues to pour into living spaces long after outside temperatures have dropped. In the winter, the high absorption of fiberglass/cellulose soaks up heat that should stay in living spaces, and emits it into the outside air. By adding low-emittance RadiaSource™, the heat that seeks to escape from a structure in the winter is reflected back in. The heat that seeks to enter a structure in the summer is reflected back out.

 

RadiaSource™ has a very low .05 E-Value, which means it reflects 95% of radiant heat. Therefore, when installed in your attic, the heat that seeks to escape from a structure in the winter is reflected back in. The heat that seeks to enter a structure in the summer is reflected back out. Buildings, therefore, stay warmer in the winter and cooler in the summer, which makes living conditions much more comfortable and causes utility bills to drop.


What is the biggest cause of high energy costs?

The biggest cause in high energy costs is heat transfer—heat escaping from your home in winter and entering in summer.

 

There are three ways that heat moves in and out of your attic:

 

  • Conduction
  • Convection
  • Radiation or Radiant Transfer

 

Conduction is the movement of heat between objects in contact with each other. Convection is the process of moving air over a warm object, where it picks up some of the heat. It then transfers that heat to another, cooler object as it moves past. A hair dryer is a perfect example. Radiation or Radiant transfer is the direct transmission of heat energy by electromagnetic radiation: light, UV or infrared. The sun heats the earth through radiant transfer as well as anything else that gets in its way.

 

In a typical attic, by far the greatest share of the heat transfer is by radiation. Insulation is designed to limit heat transfer. The mass insulation that most people have in their attic does a pretty good job of slowing down heat transfer by convection and conduction but does little to stop radiant heat transfer. That's why lining your attic with RadiaSource™ is so important. It stops heat transfer before reaching your mass insulation.

 

So, when you're looking at limiting heat transfer, the attic is the obvious place to start. It's an area of great energy loss, and therefore an opportunity for great savings. Your attic is where a small investment can deliver fast payback and big returns year after year.


How much money do people save when they install RadiaSource™ in their home?

Every home and building are different and savings will vary depending on the number of windows, doors, and existing insulation in the structure. We are happy to do a free savings analysis for your home or building. This provides the most accurate estimate and allows us to help identify other areas you can save energy and money.

 

RadiaSource™ customers on average are able to cut their energy bills significantly. Results will vary depending on a variety of factors, including the number of windows, doors, appliances and electronic devices used. The average payback for homeowners ranges from 3-5 years.


Can I get a free sample?

Want a free sample? We're happy to mail one to your home or business.

 

If you are comparing RadiaSource™ to other radiant barrier products available on the market, you'll quickly be able to see and feel the difference in the strength of our unique manufacturing process.

 

Request a FREE sample


Can I get financing?

We offer flexible financing options that allow our customers to finance RaidaSource and still save money. If you are curious about how much you could save or if you might make sense to finance RadiaSource™ in your home, please contact us so we can help you determine if it might make sense to finance the purchase.

 

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What are the RadiaSource Product Specs?

 

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