Abstract: An apparatus, kit and for permitting an underground pipeline to expand. The apparatus comprises a sheet of material extending between first and second sides and first and second ends. The sheet of material has a plurality of slots extending from each of the first and second sides towards each other. The kit comprises a front compressible body having a shape corresponding to an outside radius of a pipe elbow and the sheet of material wherein the sheet has a length and width sufficient to be wrapped into a u-shape member extending around the compressible material and the pipe elbow. The compressible material is formed of foam. The method comprises providing the front compressible body proximate to an outside bend in a pipe elbow and wrapping the sheet of material thereabout with the front compressible body and pipe elbow therein.