When my new house was being constructed, everybody was busy giving suggestion. My mother was worried about the kitchen tiles and sink, while my father was only looking into the construction of the computer room. He wanted a perfect chest for his electronic media and was getting all special gadgets installed for his office purpose. My brother, on the other hand was only trying to get the home theater properly arranged in the drawing room. My younger sister was too young to decide on her choice and was completely dependant on my mother for her bedroom. When asked for my opinion, I just asked for a simple room with colourful walls where I can portray all my art work. Hearing about my wish, our builder at once suggested us to go for Cavity Insulation in the walls. This he said was important to provide both thermal and acoustic insulation and was even more preferable than the insulative sheathing.