There are several ways to make a shower pan waterproof -- a pre-made pan can be used, made of plastic or concrete. The shower base can be made of fiberglass, acrylic and ceramic among others. The picture above shows a shower pan curb constructed out of three 2x4s. Whether your shower is tiled or a fiberglass prefabricated shower stall, you will need the proper waterproofing underneath the floor and behind the walls to ensure the longevity of the unit. Leave the mortar to cure. If you are so inclined, you can make a concrete shower pan yourself. Shower bases are easy to fix, easy to clean, fewer chances of leakages. All these come in one piece. In addition, shower bases come in various shapes and designs. What you do not need to forget is to have a waterproof shower. A shower pan works as a waterproof dam sloped toward a drain. This may lead to damage to the floor and finally the whole building. The shower pan installed in this project is somewhat complicated, but the fundamental techniques are the same for even the simplest shower — one the size of a phone booth. If you are using a preformed shower pan, the manufacturer of the pan should provide instructions as to how thick the mortar bed needs to be. The next step is to put down a layer of felt paper and then cover the floor with metal lathe as shown above. The steps of how to build a shower pan on a concrete floor are the steps that would lead you in order to build it perfectly. If you plan to install a tile floor in your shower, a shower pan is crucial because it provides a waterproof surface to lay the tile on. There are many construction steps involved in the build, but here I will discuss one of the earliest steps -- building the shower pan. Part of waterproofing the shower floor involves installation of a shower pan. If you have experience with cement and some basic trowel skills, you should be able to do almost any size shower floor in less than two days, excluding tile work. Check the floor to ensure it is level, using the carpenter’s level. The next step is to put down a layer of felt paper and then cover the floor with metal lathe as shown above. The curb is the edge of your pan that isn’t along a wall and where you would step into the shower. The shower in this project will be flush with the side of the whirlpool bath, so the frame needed to extend under the tub overhang. If you are installing tile, the mortar bed should be 2-3 inches thick on the outer edge and slightly less at the drain. Building a shower pan on a concrete floor is not a complicated process. It is only advisable that you build it, especially when the floor has not dried yet. The overall thickness of the mortar depends on a variety of factors. The main reason for this is that concrete absorbs water. Build a curb for the shower pan using 2 in × 4 in (5.1 cm × 10.2 cm) boards. Set the acrylic shower pan in place on top of the mortar. The shower in this project will be flush with the side of the whirlpool bath, so the frame needed to extend under the tub overhang. Building a shower pan on a concrete slab floor is in many ways ideal. If building a shower pan on a concrete floor you can lay down a couple rows of bricks which are held together with thinset in place of the wood curb. Typical slope for a shower floor is 1/8 to 3/16 inch per foot across. Find the length of the side of your shower area that doesn’t have a wall. Check local building codes for the correct concrete depth and the required size and thickness for the rubber membrane. Does a shower need a shower pan? The things that we should remember is how would the result of it and how to design and build the shower pan on my bathroom floor. 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