notched rabbited similarly and at about 50 of their height d 1 so they can partially drop through but then remain hanging at the appropriate height below the container moreover since site conditions of the profile usually vary within a small range of tolerances the apparatus and particularly the mold sections blocks 11 naturally adjusts itself to these variances an important aspect of the invention is the almost every component of the apparatus 1 can be selectively adjusted the mould box 10 has a height positioning adjustment along its sides so that the distance from the existing deck profile can be adjusted if necessary this is particularly necessary due to the position of the straightening bar 9 so that it clears fastener heads that may protrude from the roof deck but without being too far from the profile and creating other difficulties the wheel width is also adjustable so as to advantageously use the varying profile spacing as guides in a preferred embodiment the apparatus 1 holds 4 u2033 8 u2033 fabric in a small version however since larger fabrics directly influence wheel spacing the dimensions of the apparatus 1 are custom built to the fabric size necessary since construction panels vary greatly in their fabricated design their profile shape and the spacing between profiles the wheelbase and the moulds blocks are.