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Blown in insulation is a versatile product that can be used throughout a home.
Cellulose insulation r value. In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and an inch of blown cellulose in an attic has an r value of 3 2 3 7. We are also. There are other factors to consider. The r values of both insulations will accumulate.
The higher the r value the greater the insulating power. Fiberglass insulation vs cellulose insulation. R means resistance to heat flow. The r value of your selected material also depends on its density and the depth of the installation.
It is able to improve energy efficiency home comfort and lower utility costs. For example if your attic already has fiberglass insulation blankets installed you can improve its r value by installing blown in cellulose insulation on top of the blankets. The recommended values vary tremendously based on national provincial or municipal building codes. Compare insulation r values before you buy.
R value is a measurement of thermal resistance and measures the ability of heat to transfer from one side of an object to another. However like other loose fill insulation it also has a tendency to settle over time reducing its r value and its ability to prevent air movement. The r values between blown in cellulose insulation and fiberglass insulation are the same but the thickness varies. A fight for r value.
You can achieve better thermal performance in your attic by adding an additional layer of insulation. On average blown in cellulose insulation is 2 3 inches thinner than fiberglass insulation when both have the same r values. When installing cellulose in your home the highest r value or installation depth is not necessarily the best. This is generally true.
When walls are already finished injecting loose fill cellulose insulation is one of the few ways of adding insulation. Fiberglass insulation and cellulose insulation. The r value for cellulose insulation in an attic depends on several factors including the size shape and construction of your attic typical weather conditions where you live any air leaks and. Today we are going to look at two of the most common materials used as blown in insulation.
Loose fill cellulose is relatively inexpensive yet still has an r value of about 3 5 per inch of thickness compared to fiberglass r value between r3 to r4 per inch. Both blown in cellulose insulation and fiberglass insulation perform well to insulate your home. As a benchmark one inch of solid wood has an r value of 1. A look at cellulose insulation r values.
Insulation products sold in canada are labelled with r and rsi values. This is r value loose fill cellulose insulation read this before you buy what you should know about r values the chart shows the r value of this insulation. The r value of loose fill cellulose is r 3 2 3 8 per inch. The best r value for your home will also depend on your type of roof assembly and attic build.
A professional contractor or existing energy codes will provide the right r values for you depending on your home s climates. R values and their metric equivalent rsi values are a way of labelling the effectiveness of insulating materials. However regardless of which insulation you choose the performance of the insulation varies greatly on the quality of workmanship. The higher the r value or rsi value the more resistance the material has to the movement of heat.
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