Marathon Proliner Retrofit Drain

The Marathon Proliner Retrofit Drain is designed for applications to existing roofs to help protect the roof from water damage while allowing for proper draining. A clamping ring is an optional addition that may be required to help provide additional bonding of the membrane to the drain and roof deck. This ring is made of a heavy duty rigid material and secured in place by six bolts and nuts equally tightened to provide consistent pressure to secure the membrane.