Patent ID: 8656667

Claim:
A split-flashing composition for covering a protrusion from a roof, the composition comprising: a single piece split flashing apparatus having; a flange portion adapted for sealing to a roof surface, the flange portion being substantially planar and having an in-plane spiral shape that describes a closed-loop opening having a spiraling tear-drop shape for receiving the protrusion; the flange portion having first and second flange end portions that are connected to each other in-plane and in an off-set manner; a collar portion fixably attached to the flange portion; a closed-loop collar-portion construction having a substantially curved wall section and a substantially planar wall section that are connected to each other and together define an internal volume of space, wherein the substantially curved wall section spirals outwardly from a first substantially curved wall section edge portion to a second substantially curved wall section edge portion; the collar portion having a substantially conical shape, wherein the cross-sectional area of the internal volume of space decreases as the distance between the flange portion and the cross-sectional area increases, the cross-sectional area being in a plane that is substantially perpendicular to a collar-portion longitudinal axis; the collar portion having a substantially planar wall section that is substantially perpendicular to both a first substantially curved wall section edge portion and a second substantially curved wall section edge portion, the substantially planar wall section extending radially from the collar portion longitudinal axis and radially beyond the curved wall section of the collar portion; and wherein the second curved wall section overlaps the first curved wall section.