expand as the slit areas of the nailing flange 12 are reshaped each into a v shape configuration sealed by the seal after it finally cures with the preferred caulking compound i have found from start to finish that it may take as long as three 3 days before the cure has been completed sufficient to allow the caps 10 to be shipped to prevent them from sticking together they can be shipped sooner if they can be held apart from one another the flange 18 can either be crimped by means of a crimping tool or it can be crimped by using a sheet metal crimping machine as desired by proceeding with the crimping step before the sealant has started to cure the crimping step can be utilized to create the arcuate shape to be imparted to the drip cap 10 so that the sealant can continue to expand before total cure occurs the crimped areas actually are in the form of channels and hence i have also described them as comprising channels 22 it will further be seen that the channels 22 are vertically aligned with a corresponding one of the slits 28 directly to the rear of the horizontal support flange 20 to provide an attractive configuration when viewed from a front side of a thus formed strip or piece of aluminum material after the caulking or sealant material applied in the v shaped slits 28 has cured it serves to provide.