Insulation R Value

How Much The Foam, Fiberglass, Or Styrofoam Insulates

When you are getting ready to have your home or business insulated or are contemplating taking on the project yourself, there are a number of things to consider.  You’ll be deciding between different types of insulation and you’ll also need to think about all the features of your home or business that require insulation.  From walls to attics to water heaters to heating ducts and more, the list can be enormous.  But regardless of where and what you decide to insulate, one thing that you’ll need to be clear on is the R-value of the insulation you eventually use.

Put very simply, the R-value of any insulation is a measurement of its resistance to the flow of heat.  If the R-value is higher, the insulation is more effective.  Ultimately the final R-value will the type and amount of a given material that is used.  The R-value of multiple layers of batt insulation, for example, is simply the sum of the R-values of each layer.  More insulation means a greater R-value, which in turn means a higher degree of insulation.

Of course, how effective the insulation’s real resistance to heat flow will depend on how you install it and where it is installed.  If the insulation is tamped down by weight, its R-value may be compromised.  Likewise, if the insulation is too loosely installed, the resulting air flow will reduce the effective R-value.  It is crucial that you correctly install the insulation to maximize the R-value.

To get the best out of your insulation, you should know a bit about the types of insulation and what they are best used for.  The rolled or fiberglass batt insulation is quite often used for walls and attics.  They are cut to fit a standard space of studs used in wall, attic and floor construction.  R-values generally range from R-13 to R-21 for this kind of work.

The R-value of some other types of insulation can be a little more challenging to calculate.  Insulation used for hard to get to places is often the spray-in loose-fill type.  The eventual thickness of the blown-in material will determine its R-value.  Likewise, the R-value of foam insulation is a byproduct of how much foam is used.  The foam type can be sprayed into nooks and crannies -- great for closing off tiny hard-to-reach air gaps.

So regardless of which part of your venue is being insulated, how well it is insulated will be directly related to the overall effective R-value.  Being equipped with this knowledge will allow you to be more successful in completing your own project or give you the power to oversee a contractor completed project.




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