Have you seen a no-threshold shower? It’s a shower that has no curb or surrounding edge to it, making it flush with the bathroom floor. You may have also heard the terms barrier-free, curbless walk-in-shower or zero threshold, but they are all the same thing. I know what you may be thinking. Where is all the water going to go? Won’t I have a flood on my hands after every shower? No! The secret to containing the water is in the drainage system. This type of shower will have either a trench drain, which is a long and narrow drain placed where the shower door would be placed, or a center drain with the floor just slightly pitched towards it.