KeyWay is a re-usable polyethylene strip that is nailed to a form or header before pouring. When stripped out later, a key way is left in the concrete. This key way is used to lock multiple on-grade slabs together in tilt-up buildings, industrial floors, curbs, driveways and wherever specified. Keyway will not split, chip or crack in any temperature. This re-usable polyethylene profile can be nailed or stapled to a form or header of any slab.