Abstract: An apparatus is provided for rolling tape onto a seam between two sheets of flexible material, such as a roofing membrane. The apparatus solves the problem of wave formation in front of the applicator roll by providing a support roll that carries most of the load of the apparatus. There is also provided a means for driving the roll at a peripheral speed faster than the spped at which the apparatus is moving over the material being taped. In addition, means are provided on the apparatus for separating a liner from the tape and for winding up the liner on a storage reel.