So that it may trap the solar radiations and maintain the temperature of the wooden building.
Explanation:
Wood is not as effective an insulator as fiberglass. It comes in a number of widths, the widest being 3/4 inch, which has an R-value of 0.94. However, fiberglass, the thinnest of which is 3/4 inch, has an R-value of 3. Therefore, fiberglass is a better insulator.
Air is an excellent insulator. Fiberglass is a good insulator because of the vast amount of air spaces trapped in it. Therefore fiberglasses are used as insulator in wooden buildings than any other insulator.
