A pitch pocket for sealing a physical penetration of a roof is disclosed. The pitch pocket comprises a semi-rigid annular shaped curb with a base surface, and an opening to allow the passage of the physical penetration of the roof. The curb is further provided with a split in order to allow one to install the curb directly around the physical penetration instead of having to slip it on the penetration from its opened end. Adhesive is applied in the split so as to close the curb and adhesive is also applied to the base surface to secure the curb to the roof. A pourable sealant is then cast in the opening of the curb to form a solid seal of the penetration of the roof.