The stand-up OMG AccuSeam System mechanically attaches PVC & TPO systems. In one step, the lap plate is placed in position by the AccuSeam tool as the laborer drives the fastener, eliminating the need for one laborer (where normally two would be required), thereby increasing productivity. This simple and easy-to-operate tool minimizes operator fatigue as it eliminates the constant bending-over method of fastening.