If you're looking to build a shower without a threshold, there are a few things you'll need to keep in mind. First, you'll need to make sure that the floor of your shower is sloped properly so that water will drain properly. You can do this by using a level to make sure the floor is even and then adding a layer of mortar or concrete to create a slope.
Next, you'll need to install waterproofing membrane on the walls and ceiling of your shower. This will help keep water from seeping into the cracks and causing damage. Once the membrane is in place, you can add tile or another type of finish to the walls and ceiling of your shower.
Finally, you'll need toinstall a drain in your shower. This can be done by drilling a hole in the bottom of the shower base and then attaching a drain assembly. Make sure that the drain is installed properly so that water will flow freely through it and won't cause any clogs.
Building a shower without a threshold may take some extra time and effort, but it's definitely possible if you follow these steps. With proper planning and execution, you can have a beautiful and functional shower that doesn't have any pesky thresholds getting in the way!