What is blown insulation?

FOUND Insulation, also called Free Insulation, is commonly used to insulate existing structures that had previously had no insulation or where further insulation was needed. It consists of free particles that are blown into the attic or wall cavities, which are a space between the inner and outer walls of the building. Since even material distribution is important, and since a special pneumatic device is required, the installation is usually performed by a professional.

There are three basic types of blown insulation commonly available. Glass fiber insulation consists of small particles of writing glass fibers. Mineral wool is made of particles of rock or steel slag, which is recycled production waste. Insulation of cellulose comes from recycled newspapers or cardboard, which were treated with chemicals to be resistant to flame and insects.

In the US, all insulation is given by the value R, which is the measuring thermal resistance. Insulation with a higher value of R provides an apparatusMore barriers to heat loss. The R values ​​are based on the type of material used, on the thickness and density of the material. The R value for the blown insulation depends on which type is used and how much it is blown; Its thickness is measured by a ruler. Fouw insulation often has two R values. The first represents its value in installation and the second represents a lower value after the material has settled over time.

Using blown insulation has many advantages. It is quite economical and is much easier to install in hard -to -reach areas and also work on obstacles such as chimneys or stoves. Foung insulation is ecological because it uses recycled materials. It can be used as a primary type of insulation, or can be added to other types of insulation to help fill the filling and provide another thermal barrier.

Flown insulation also has disadvantages. Over time, the particles settle, which reducesIts its value R. Sometimes it is mixed with the glue before it is blown in; The adhesive helps the particles to withstand settling. There are some concerns about the blown insulation entering the living space through gaps in the home pipeline and the inhalation danger of fine particles is unknown. Many of these fears can be alleviated in proper professional installation. Since the blown insulation tends to absorb moisture, a steam barrier should be used, especially in a new installation.

Remember and check the building regulations and regulations. In the US, the national electrical code (NEC) prohibits blown insulation in older homes with certain types of outdated systems, as the overheating of the conductors can cause a risk of fire. Your installation expert will be able to advise you on the best insulation for your particular structure. As with all insulating products, you should avoid attic openings and obstacles producing heat, such as luminaires.