Abstract: A pipe support for supporting gas lines and the like on a roof comprising a generally unitary member formed from a rubber-like material resistant to water and sunlight, the support including a triangular body formed by a base, converging legs and a connecting portion at the apex of the body, and clamping arms that extend from the connecting portion to form a pipe receiving and supporting chambers into which a pipe can be engaged by pressing the legs together to spread the arms apart, the pipe being clamped in the chamber by releasing the legs so that the arms close on the pipe.