Only positives come from restoring a coating on a metal roof and then maintaining that coating by re-coating the roof as necessary. An elastomeric acrylic coating acts like a shield, protecting the metal roofing system from the elements, including ultraviolet (UV) radiation, and ice and hail storms.
one hand clapping. The sound of one hand clapping is the sound of one hand closing quickly. The sound of one hand clapping is supposed to be a question with no answer. It is a clasic Zen koan given to students to aid in enlightenment by leading the mind into a cul-de-sac with no way out but enlightenment.
In South America, the gesture is used to imply that two women are lesbians. Hand rubbing involves rubbing the palms of one's hands together. As a gesture of expectation, the rate at which one rubs the palms together is significant. A fast pace indicates expectation of something good for onesself. But a slow pace indicates expectation of something bad for someone else.