Insulation is a method to isolate or prevent transmission of electricity, heat, moisture, shock or sound from one medium/ item to another. The non-conducting material such as oil, fur, silk, wool, rubber, glass, plastic, wood, paper, wax, ebonite, etc., also known as insulator perform insulation process. Sustainable insulation is a vital part of any residential or commercial construction. It is helpful in conserving energy and reducing energy cost while protecting from the harmful impact of energy on an environment. Sustainable insulation is becoming must process in the construction industry, practicing this not only help in saving energy but also protect home for long term.