The only time you won't need a pan is if you have a fully tiled wet room space without a shower enclosure. 3. Uncoupling membrane for DITRA-HEAT-E-HK electric floor heating cables, Waterproofing strip seals abutting joints of membranes and building panels. Free-space on the underside of the matting provides a route for excess moisture and vapor to prevent damage to the tile layer above. Tiling Project Guide. Use only a little bit of water at a time to maintain a stiff, peanut butter-like consistency. He spent more than 15 years as a third-generation tile and stone contractor before transitioning into freelance writing. Making statements based on opinion; back them up with references or personal experience. Kerdi shower pan in a shower with 2 drains, How do I deal with 3" subfloor overhang and extreme joist notch, Medium term repair for cracked shower pan. And if the pan isnt properly sloped to carry water to the drain, water standing in the pan can become a petri dish of bacteria and possibly a slipping hazard. Designed specifically for ceramic tile and dimension stone installations, DITRA serves as an uncoupling layer, waterproofing membrane, and vapor management layer that accommodates moisture from beneath the tile covering. Build a high border around the perimeter of the shower, about 1/4-inch below the tile top perimeter line. I beefed up all the supports. Shower pan over 2nd story wood subfloor install - JLC Online The classically-inspired KERDI-DRAIN is offered in a variety of grate finishes and accommodates a wide range of tile thicknesses. For a seat designed for sitting, that hazard could be argued as bather beware if he chooses to stand on it. Do I need to mud under shower pan? - Liquid Image DITRA-HEAT features a thickness of 1/4" (5.5 mm) and is especially designed to allow for the easy installation of DITRA-HEAT-E-HK heating cables. All trays feature integrated KERDI waterproofing and are available in several sizes to fit a variety of shower configurations. No I would not apply water proofer to the subfloor under the shower pan (unless we are going to be waterproofing the entire floor it might be easier to just continue it under the shower pan). Lay the waterproofing material on the floor of the shower, running it about five inches up each of the walls. Learn more about the essentials of waterproofing. What does "up to" mean in "is first up to launch"? Bathroom Subfloor Thickness | DIY Home Improvement Forum This may require the services of a qualified design professional (e.g., architect, engineer, etc.).