The changes resulted from a desire to make buildings more energy efficient by minimizing heat loss and gain and by reducing airflow. So now when water gets in, it tends to stay longer, encouraging the growth of mold.
इमारतों की बनावट में यह बदलाव इसलिए लाया गया ताकि ऊर्जा का सही इस्तेमाल किया जा सके ।