A roof edge system includes a water dam and a fascia secured to the water dam with spring clips. These control agents provide superior properties for control of the polymerization andor the properties of the polymers obtained andor the monomers that may be polymerized. The apparatus further includes a water inlet valve operationally connected to the vessel and a water outlet valve operationally connected to the vessel. The system further includes a control generator that generates control of a form associated with the entity based upon the generated by the binding component.