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What is Insulated Siding?

By Christina Edwards
Updated May 16, 2024
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Insulated siding is a relatively new type of external siding that has rigid foam insulation attached behind the exterior surface. This type of siding has a few advantages over other exterior siding options such as aluminum siding and brick siding. The main advantage is better insulation, but it also acts as a noise barrier, is more durable than ordinary vinyl siding, and helps discourage insect infestations.

Progressive Foam Technologies Inc. created insulated siding in 1992. During the 1990s, this vinyl insulated siding underwent a number of trials and tests to improve it, and by the late 1990s it started becoming increasingly popular. Although it is a bit more expensive than regular vinyl siding, the insulated version is still a popular choice among home owners and builders.

Unlike regular vinyl siding, insulated vinyl siding has a layer of insulation on the back. This insulation is generally made from stiff foam, and it is sandwiched between the siding itself and the home. Many home improvement experts consider insulated vinyl siding as an upgrade to traditional vinyl siding.

Probably the biggest advantage to insulated siding is that it provides better insulation to a home. This means that there is a reduction in how much energy is consumed by a household to maintain the temperature inside. Because the cold air is kept out in the winter and in during the summer consumers will use less energy to heat their homes, resulting in lower energy bills.

Not only does insulated siding help maintain the temperature of a home, it can also act as a noise barrier. Many home owners who use insulated siding agree that they hear less outside noise after the installation of this type of siding. Some other exterior siding options, including vinyl and aluminum siding, sometimes have the tendency to rattle slightly during heavy winds. This rattle can be heard on the inside of the home, but with an insulated siding, this noise is also reduced.

Because of the thick, stiff padding on the back, insulated siding is much sturdier than other siding options. It is considered to be just as hard as wood siding, but without the threat of rot or decay. This results in less sagging, dents, and damage to the exterior surface of a home. Many versions of insulated siding can also be purchased to mimic the traditional look of wood.

Among its many other advantages, insulated foam siding is designed to discourage termite and other insect infestations. The foam backing added to the back of the siding fills the space where these pests often gather. An additive added to the insulation further deters damaging infestations.

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