* Recessing the floor of a shower must be done in a way that preserves the structural integrity and safety of the construction. We also smartly list products and services to help in moving your project along. Modern shower styles use offset drains or linear drains for a sleek look that keeps the drain out from underfoot when showering. KERDI-LINE is an elegant, low profile linear floor drain specifically designed for bonded waterproofing assemblies. It will never come into contact with the pan liner. If it leaks, it fails. Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers. Cut and lay down the tar paper on the floor of the shower. A piece of plywood can be purchased in 1/2 or 3/4 thickness, and most cement backer boards will be 1/4, 1/2, or 5/8 thick. The studs were rotten, the subfloor was rotten, and the top of the joists (in some places) were weak and rotten. Based on the comments to this answer, updated answer: Since you're waterproofing the entire room, its not essential. A fully waterproof assembly is easily achieved by sealing seams and fastener penetrations with KERDI-BAND. I used an unbonded mortar bed, so I have a tar paper slip sheet on the subfloor with wire mesh stapled to the top of it. Remove debris at the area of the subfloor where the shower pan installs, using a shop vacuum. This one starts at around 1 1/2 inch thick at the drain and should slope outwards 1/4 inch for every linear feet away from the drain. The lower area of the shower walls should be open, with no cement boards in place yet. Installing an Acrylic Shower Pan in a Mortar Bed - YouTube Thin-pour shower pan - JLC-Online Forums Add mortar or small amounts of water, as necessary, so the batch is the consistency of moist mashed potatoes. The flange is fusion welded to the perimeter of the shower base's core. Once the moisture barrier is in place, a layer of wire mesh or chicken wire is put down and stapled to the subfloor. The top shower pan floor covering is the tile. Oatey's shower pan liners are offered with either CPE (CPE pan liners are recommended if your floor has a radiant heat system) or PVC sheet material at 30 mil. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Different options and thicknesses of DITRA membrane are available to best suit the needs of your project. The flange provides a water barrier to prevent water from exiting he shower during normal use, or in case of a "back-up". Place a full sheet of plywood onto the joists with the 48-inch end against the edge of the cutout where a floor joist runs below the edge. Donato is the founder of CTaSC. 4. What risks are you taking when "signing in with Google"? DITRA performs all these functions while still providing adequate support/load distribution for the tile covering. I ripped my old shower down to the studs and joists. Uncoupling and waterproofing membrane: Schluter-DITRA, 4. They can easily be cut to size with a utility knife, or may be extended with dry-pack mortar. If you are worried about it and need to use 1/2" sheathing for other reasons then just install 2x blocking perpendicular to the joist at a shorter distance on center, say 8"-12" O.C. Cut notches into the floor joists to the permitted depth using a reciprocating saw, if no reinforcement is needed according to building code or plans. DITRA provides uncoupling to prevent cracked tile and grout. Mix and place the first mortar layer. But remember, the code is a minimum standard and not a measure of fine home building. Increasing subfloor thickness under new shower pan, New blog post from our CEO Prashanth: Community is the future of AI, Improving the copy in the close modal and post notices - 2023 edition.
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