The best way to evaluate different types of insulation is to compare their R-values.
R stands for resistance.
The higher the R-value the more resistant the insulation. Highly resistant insulation prevents drafts and keeps your house more comfortable than insulation with a lower R-value. Insulation also comes in a variety of materials and forms for different parts of your home. The information below will help you understand the different types of insulation. This type of insulation includes glass fiber, rock wool, cellulose, perlite, and vermiculite, and can be poured or blown in place.