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Your Ultimate Insulation R-Value Guide!

Your Ultimate Insulation R-Value Guide!

November 22, 2019

insulation r-value guide

If you’re a homeowner looking to upgrade your insulation, add insulation to your home or just learn a little more about it, you may have heard of “R-Value.” You may know it as a number or rating used to measure the insulating capabilities of insulation material—while that’s important information, there is much more about R-Value that you should know. To help you out, the pros at DFW Thermal Solutions have created a handy insulation R-Value guide!

What is R-Value?

According to the Department of Energy, “an insulating material’s resistance to conductive heat flow is measured in terms of its thermal resistance or R-Value.” In short, it means R-Value measures the insulation material’s ability to stop heat. An insulation with a good R-Value would adequately retain the heat inside your home, keeping you warm in the cold. The higher the R-Value, the better the insulation capability.

The R-Value of your insulation is dependent on the type of insulation, thickness and density. For some other insulation types, it also depends on the temperature, moisture accumulation and aging.

How Much R-Value Do I Need?

The R-Value or amount of insulation you need depends on the climate you live in, the heating and cooling system you have and which part of your home you plan to insulate. According to the Department of Energy, different regions of the United States are in different R-Value zones. Base the ideal R-Value of your insulation on the insulation map created by the DOE.

Does More Insulation Mean More R-Value?

Usually, more insulation can increase the R-Value of your home’s overall insulation. However, there is one thing you should keep in mind with loose-fill insulation. As the thickness of the newly installed insulation increases, so does its settled density. This occurs because of the compression of old insulation under the weight of new insulation. Because of the changes in settled density and compression, the R-Value of the loose fill insulation might not be consistent. As a result, it does not change proportionately with thickness.

What Are The Different Insulation R-Values?

Fiberglass batt insulation: R-Value range of R13-R30

Loose-fill fiber glass insulation: R30-R50

Loose-fill Cellulose insulation: R30-R5

Open cell spray foam insulation with a 3.5-inch thickness: R12.6

Closed cell spray foam insulation with a 1-inch thickness: R6.5

Does Radiant Barrier Insulation Have an R-Value?

Radiant barrier insulation’s abilities cannot be measured using R-Value. That is because radiant barrier does not provide insulation through thermal resistance. Instead, radiant barrier insulation works by reflecting radiant heat, preventing heat gain in the summer. This type of insulation can also be called reflective insulation because it is made of reflective materials such as aluminum foil.

Learn More About R-Value with DFW Thermal!

We hope this insulation R-Value guide was helpful! If you have any more questions about insulation or R-Value, get in touch with the pros at DFW Thermal! Our experts will be sure to address any insulation concerns you have with utmost professionalism! Call us today at 214-731-3115 or schedule a service with us on our website!