wraps are preferably taped full length of the wrap and the lower end 19 of the bond breaker material 18 should also be taped in a thickness necessary to provide a sufficient clamping surface alternatively a layer of grease may be applied to the pile 10 prior to application of the bond breaker material to further facilitate movement of the bond breaker material 18 relative to the pile 10 during soil movement in regions of alaska the continuous permafrost 20 may extend 1800 feet below the surface 14 of the soil 12 at the surface 14 the soil 12 may unthaw and refreeze to a much colder temperature than the permafrost 20 this area of the soil 12 between the surface 14 and the continuous permafrost 20 is known as the active layer 22 this active layer 22 is the part of the soil 12 that acts to pull the pile 10 upwardly as the soil 12 expands during frost heaves therefore it is the portion of the pile 10 that is to be permanently located the active layer 22 that needs to be covered by the bond breaker material 18 the active layer 22 is generally less than five feet in depth and therefore it is preferred that the bond breaker material 18 be applied to that portion of the pile 10 and preferably extending a few inches above the surface 14 of the soil 12 to compensate for uplift of the soil during frost heaves it should be understood by one skilled in the art that the depth of the pile 10 into the soil 12 will vary according to construction requirements and it should be understood that the pile 10 will generally extend fifteen to twenty five feet farther into the continuous permafrost 20.