Door threshold bars, also known as Z bars, are essential for joining hard floors such as wood, laminate, and tile, or floors of different heights. By covering the expansion gap between surfaces, floor transition bars prevent trip hazards, maximise safety, and ensure smooth transitions in both commercial and residential environments. Shop our wide range of door threshold bars, made from robust aluminium and available in various width and height profiles. Ideal for commercial offices, kitchens, and retail spaces, they suit the needs of flooring contractors and joiners completing high-traffic flooring projects. Buy durable door threshold bars today for premium performance and fast next-day delivery.