Choosing the Best Attic Insulation

Any discussion about proper attic insulation has to start with a firm knowledge of R-value, the measurement used by industry professionals to rate the insulation’s ability to resist the loss of heat from inside. R-value is the ability of a material to fight, as a minimum, the thermal resistance experienced at various temperatures. The four factors that affect the R-value are the type of covering used, ambient temperature, roof construction, and frequency of use. The following four considerations usually influence the insulation’s R-value:


Different types of attic Insulation Salt Lake City are available to address different climates. Most systems have two or more layers of materials designed to perform effectively in specific environments. Combinations of materials are sometimes used to improve performance. The most common materials used in insulating the attic are foam board, cellulose or paperboard, mineral wool, mineral spray, or loose-fill. The effectiveness of any one of these types of systems is typically limited to climates with intermediate R values, where small amounts of air leaks would allow moisture into the system, and environments with extreme cold or warm conditions would allow air to leak out of the system, thus reducing its R-value.

Air and moisture, both of which penetrate through traditional attic insulation, are allowed to travel through the layers of foam board, mineral wool or loose-fill material. If any of these materials is found to be damp, moldy, or suffering from water damage, the entire insulation is likely to become ineffective. Moisture can increase the R-value of the attic insulation, and air leaks allow moisture to seep into the ceiling and walls. This process also contributes to unhealthy indoor air quality.

The roof system is the most effective way to insulate the attic. The insulation should be installed in accordance with local building codes to get the best results. New insulation should be checked regularly for efficiency; old insulating materials should be removed and properly discarded, and the proper attic insulation should be replaced if found to be ineffective in controlling moisture and air infiltration. The installation of a new roof system is much more expensive than the installation of attic insulation.

Installing the right attic insulation requires a professional approach, especially if it is to be done by an inexperienced do-it-yourselfer. Different types of materials require different methods when applied. For instance, it would be impossible to install fiberglass batt insulation on the exterior walls of a cold climate. If, on the other hand, the homeowner decides to install a tightly packed cellulose-type of attic insulation, it might be possible to do so with ease. All of these types require different methods of installation, and professionals have access to all of these techniques and are very well skilled at their job.

It is also important to determine the right R-value (efficient thermal resistance) for attics. To find this out, a thermal resistance test must be performed. It is usually performed by a thermal or r-value analysis expert to determine the appropriate amount of insulation needed to prevent energy loss.

Installing the best attic insulation will not only improve your energy bills, but will also make your home safer. Fiberglass batt insulation, for example, can provide excellent insulation against heat flow and intrusion, and it can also provide excellent protection from moisture. It is important to select the right material depending on the climate in the area and the type of house construction. Installing blanket insulation around loose-fill walls will also help to keep the attic dry and free from moisture problems.

If you install the proper attic insulation, you will not need to spend a lot of money keeping your home warm. In fact, in warmer climates, blanket insulation will serve as an excellent source of extra heat by reducing air gaps between spaces and between walls. Fiberglass batt insulation should be installed according to local building codes, and you may wish to consult with experts about the best materials and configurations for your region. If the job is done correctly, you should see the results for yourself and feel confident that your home is properly insulated.