The thing which has resulted in this growing trend is the increasing environmental problems that are being discussed among the common public more these days. The people worldwide have become more careful about the surroundings they live in and thus making every possible contribution in order to make their existence better by going green in everything including their buildings. They have become more aware about the quality and the level of standard of the products they chose rather than just going by the look of the house, which has helped to cope up with the environmental degradation to some extent.