04-10-2014, 06:03 PM. We think it is the cement board (Durock) sucking the moisture out of the unmodified thinset. Step 7: Finish the KERDI-BAND Installation. You're shower or tub will be waterproof after you complete this next step. Use tile spacers and a laser level to ensure even spacing between tiles. Features a brushed finish. Q: Can Kerdi-Board be . In this video I show how I take a shower from studs to ready for waterproof using a mud shower pan and Schluter Kerdi membrane with Ardex 8+9 over the top. All Wedi shower systems come with a pre-sloped shower pan. The shower base can also be extended past the perimeter of the shower tray using dry pack mortar. Otherwise the water from the shower will absorb into . The KERDI-SHOWER-LTS is a prefabricated shower tray designed to accommodate the KERDI-LINE linear drain along the perimeter of the shower. Amazon's Choice for kerdi shower pan. The flanges can be installed on the outside of the kerdi board instead of the studs, but then the bottom will stick out and be visible on the bottom of the tile. Kit covers up to 101 ft (9.4m) of wall area. I was told by the Schluter dealer to create the water tight shower enclosure, and you're good to go: Install the cement board on the walls, down to the flooring, seal the joints with thinset and fiberglass mesh tape, waterproof with Red Guard (or your choice). Here's where we left off on our guest bathroom renovation: So far, we've removed the toilet, sink, mirror, hardware, light fixture, shoe molding and baseboards, floor tile, shower stall, and insulation. Not taping and mudding the seams. I really don't see any videos of people installing Kerdi board with an Oatey membrane. There are several acceptable applications of cement board in the shower. Schluter Kerdi membrane is a flexible, sheet applied waterproofing and vapor-retarder membrane that is typically applied to shower walls, bathtub surrounds, and other tile applications where moisture will be present. Then hang the sheet. - Quickly Request a Quote - Residential and Commercial Services - Get The Help You Need Fast. Tile Forum/Advice Board . Thickness: 8 mil (0.2 mm) Pliable, easy to install, and guarantees uniform thickness for reliable performance. Why Us? Key thin-set onto joint, comb in additional thin-set, center the KERDI-BAND on the joint and embed it with the flat side of your trowel. Create a fully waterproof and vapor-tight enclosure for tiled bathtub and acrylic shower base surrounds. It would be recommended to Schluter fabric over the entire area, or put a couple layers of aqua guard or redguard over the cement board. If you use Durock: For walls, use Durock, followed by Redgard or similar; no additional vapor barrier behind durock . Suitable for use in showers, bathtub surrounds, and intermittent-use steam showers. After the Kerdi goes in, I would pour the final slope for the shower floor and tile overtop. Unmodified mortar consists of Portland cement, sand, water, and retention agents. Part 1: Design Board. Unlike shower pan liners in traditional assemblies, KERDI is a bonded waterproofing membrane that allows . ANSWER - No there should not be a gap between the top of the bathtub flange and the backer board on the wall. Position KERDI-BOARD on the framing and press a washer into the board every 12 inches up the stud location. . The kit includes Kerdi-Board panels, Kerdi waterproofing band, pipe seal, mixing valve seal, screws and washers, and Kerdi-Fix sealant. The Kerdi-Shower-TS is designed to integrate with the Schluter-Kerdi-Drain. If ever I think a shower pan may have a hole or more, a complete overlay is a good idea. Tile Backer Board Breakdown. Cement board with Kerdi membrane will be used for the shower walls all the way up above the shower head. Schluter says that the Kerdi membrane and tile can be installed over standard gypsum wall board without any problems. Part 4: Insulation and Cement Board Installation. Yes, KERDI -BOARD may be installed over plywood on a bench with screws and washers. All of these backerboard options have advantages and disadvantages. Repeat this process until the entire board is installed on the framing. The shower tray eliminates the need for a mortar bed making installation quick and easy. . It is lightweight and made of expanded polystyrene. February 26, 2021. 9 [Archive] Question on kerdi shower installation on concrete slab. Thinset to just outside those coverage marks with the flat side of the trowel, then come back and give it a quick comb with the notched side of the trowel. Schluter Systems KST1220/1830 Kerdi Center Outlet Shower Tray 48"x72" . This article will outline every single step of the Kerdi Shower Wall Tile installation process, step-by-step. These boards are made of 90% Portland sand and cement, along with some proprietary ingredients, and contain no glass fibers or fillers. This video will show you the complete installation from start to finish of the Schluter-KERDI-SHOWER-KIT. The HydroDefense cement boards are also rated ASTM E136 non-combustible. Repeat this process until the entire board is installed on the framing. You can even install the drywall first, then Kerdi the drywall, THEN install the pan. The Schluter -KERDI-BOARD-KIT combines all of the necessary components to waterproof the walls of your bathtub and acrylic shower base using waterproof building panels. We actually used pieces of leftover KERDI-BOARD in this project. Any of them can work well if properly detailed. They come in the same size as the typical HardieBacker cement boards, 3 feet by 5 feet, with a .42 inch thickness, and a 2.6 pound weight. I am tiling a large shower with a 10 foot ceiling. For example, one square foot of inch thick cement board weighs approximately 40 ounces while the same in Wedi board weighs about 75% less; Wedi also offers an ideal bonding surface; won't warp; pliable, unlike cement board.Custom Shower Pan. Mark the coverage of the Kerdi on the hardieboard. Kerdi-Board is made from an extruded polystyrene foam panel, with a special reinforcement material on both sides and fleece webbing for effective anchoring in thinset mortar. There are other brand names of polystyrene backerboard, as well as other materials to choose from, including cement backerboard. Yasir, Kerdi-Board by Schlter is one brand name of polystyrene backerboard for tile. The Schluter shower pan system calls for an unmodified thin-set to be used because of the waterproofing membrane. Schluter-KERDI-LINE-FC is a stainless steel cover plate for use with KERDI-LINE to create a seamless look in applications where multiple drains are installed end-to end. Then set the pan, then Kerdi the pan. 4 Best Cement Tile Board Applications . CONTENTS 4 6 Schluter-KERDI waterproofing membrane 8 Schluter-KERDI-BOARD waterproof building panel 10 Barrier-free showers 12 Schluter-KERDI waterproofing membrane 14 Schluter-KERDI-BOARD waterproof building panel 16 Schluter-KERDI-DS waterproofing membrane 18 Bathtub surround assembly 20 Walls and ceilings 21 Schluter-KERDI-BOARD-SN shower niche 22 Shower base with Schluter . I really don't see any videos of people installing Kerdi board with an Oatey membrane. Kerdi can be used over drywall, no cement board needed. But what about the tile? 32. Modified thin-set is mortar with additional bonding agents mixed in, creating a stronger bond. 1. Tiles can be installed directly on KERDI using the thin-bed method. Schluter Kerdi Membrane is manufactured with a polyethylene center with non-woven polypropylene on both sides which allow . Kerdi-Shower-TS is a prefabricated sloped shower tray with integrated Kerdi waterproofing. Cement Board Thickness. Since the existing wall board will be removed, I'd prefer to go a little extra and install a water proof cement board type base so the tile has a solid substrate even if it were to get wet, such as from a plumbing leak, or from . KERDI-LINE-FC features a brushed finish, and is designed for use with either the solid or perforated grates with brushed stainless steel frame. on walls, creating a fully waterproof and vapor-tight enclosure. ANSWER. Shower Pans are Fully Waterproof. Panel dimensions are 1/2 in. Part 2: Demo Day! x 96 in. Part 3: Plumbing Rough-In and Floor Leveling. THE SCHLUTER SYSTEM. Then drill a single screw through the washer/KERDI-BOARD and into the stud. 1 x TruSlope LD 49x60-SCP Standard Tray Center Placement + $163.80. Click to see full answer. It can be used in the creation of a broad range of building elements, such as showers and bathtub surrounds. Ideally, the tray should be cut by equal amounts on all four sides to ensure a consistent height of the first course of wall tile. Position KERDI-BOARD on the framing and press a washer into the board every 12 inches up the stud location. KERDI is installed over the solid backing (e.g., gypsum board, cement backerboard, etc.) Then drill a single screw through the washer/KERDI-BOARD and into the stud. About Durock vs Kerdi: a. 1 x 24 X 60 Standard Center Placement Shower Tray Extension + $116.63. FEATURED. All applications pair up the tile board with some kind of waterproofing material, whether a liquid membrane, plastic sheeting, an uncoupling membrane like Schluter Kerdi, or a board that is already faced with waterproofing. Shower Waterproofing Crash Course. Step 4: Seal any Pipe Intrusions. I've walked into people's homes that had cracks in their tile 3 high all the way around their shower. One of the major benefits of opting for Kerdi Board over cement board is the ease of installation. We have ripped out a corner shower built in a 1968 pier and beam home. Details. When you need a concrete retaining wall company you can count on Jim's Concrete Retaining Walls. Masonry Contractors in Burns Kit includes: 8 - 1/2-in X 48-in X 38-in Kerdi-Board panels, 2 pipe seals, 1 mixing valve seal, 1 . KERDI features a modified polyethylene (PEVA) core with non-woven polypropylene on both sides to anchor the membrane in the thin-set mortar. How to Install KERDI-BOARD on the Main Wall Here's where the fun begins. It is a topical waterproofing layer that is put over the substrate to keep water from getting to the wood frame and nails. jgleason. The builder typically has tile backer board (e.g., CBU or fiber-cement board) supplied and installed by the gypsum board installer or the tile contractor. Cement board is a good, reliable backer board that works well on both floors and walls. Phone : 855-931-1331. Unlike shower pan liners in traditional assemblies, KERDI is a bonded waterproofing membrane that allows . That way you don't have to walk on the pan when kerdi-ing the walls. kerdi shower pan with cement board walls. Then hang the sheet. The asphalt paper or polyethylene should overlap the tub flange so moisture that collects on the moisture barrier can evacuate into the tub; or more important so it can't get into the wall cavity. The cement board is most definitely not. In some cases, a trowel-applied or roll-on waterproofing membrane is installed over the backer board. The shower tray, available in a range of sizes with thicknesses from 1-21/32 (42 mm) to 2-3/8 (60 mm) , eliminates the need for a mortar bed, and is easy to install. Kerdi Board Shower Bench (Rectangle 11.5"x38"x20") 4.8 out of 5 . This is a result of the walls flexing and the installer not taping and mudding the seams. Standard gypsum board may be installed in the shower. Removing the plaster to add 1/4" hardi board on the wall is not that easy either. . We tried soaking the cement board and applying the kerdi in small sections. Happy Tech Tip Tuesday to you all! Longer screws may be required over KERDI -BOARD and plywood to reach a . I like the Kerdi product for my walls because of the pre-fab niche, and lightweight materials and smaller board sizes that are available. I am thinking that I might just leave the . 1. We installed cement board on the walls, and today when we attempted to apply the Kerdi membrane we could not get it to adhere. Still debating best way to fix this. 1 x 49"x60" One-Slope STANDARD Linear Drain Tray + $158.00. The repair was subpar and the subfloor is being replaced for a second time. R403.1.6 & R602.11 Install " diameter anchor bolts embedded a minimum of 7" into concrete or masonry at 6' on center maximum including interior braced wall lines. Complete all Tiling Prerequisite steps. Kerdi is also used as shower lining, as required in IRC Section P2709.2 and IPC Section 417.5.2, over concrete, mortar, tile backerboard, expanded polystyrene foam board, prefabricated polystyrene shower trays, curb and ramp, gypsum board and masonry substrates." So, you can choose what board you want in your shower when using Kerdi. . x 48 in. I agree that gypsum seems very questionable anywhere in the wet areas of a shower. Please don't do this, you're asking for problems. Subject: Bathroom renovation shower - Kerdi board vs Durock cement board. Cut a section of Kerdi off the roll and dry fit it on the hardie. Install Kerdi Shields around any pipe intrusions through the wall and into the shower or tub enclosure area. Allow thinset mortar to dry, remove tile spacers, and apply grout to complete your shower wall tile installation. Eliminates need for gypsum and cement board. We are eager to help you. Take a look at the Schluter Kerdi shower information on the Schluter site. Embed KERDI-BAND onto every seam using the same method. KERDI-BOARD panels are applied directly to stud framing. The KERDI-SHOWER-ST tray can be cut to size to fit various applications. If you see your contractor do this STOP HIM !Here is how I do the wallboard.https://youtu.be/cNLaNE2h9H8F. Do not use green board anywhere inside the shower, unless you are using kerdi membrane and you know what you are doing. While cement board may be the most common and widely-known tile substrate, Kerdi Board is giving it a run for its money. Another question. Since thin-set mortar works over almost any substrate, . The Schluter Kerdi drain pan will work with the cement board walls. Cut a section of Kerdi off the roll and dry fit it on the hardie. Complete all Tiling Prerequisite steps. Standard Center Placement Linear Drain Trays. We are using a Kerdi shower pan with a dry pack mortar extension, of course covered and finished with Kerdi membrane as well. Cement board is 3'x5. Headquartered in Hillsboro Oregon, Parr is ranked . The Schluter-KERDI-SHOWER-KIT contains all the co. The Kerdi system is installed using thin-set mortar . Redgard on Hardibacker Board The trend these days is toward waterproof showers, so redgard will be better than a vapor barrier behind the cement board. Allow thinset mortar to dry, remove tile spacers, and apply grout to complete your shower wall tile installation. You can lap the floor Kerdi up and on top of the wall membrane, or use a strip of kerdi to connect the wall membrane to the tray membrane. 0 Comments . KERDI was developed as a waterproofing membrane to be used in conjunction with ceramic and stone tile coverings. Anonymous. The gridlines printed on the surface are . Re: Kerdi on shower curbs. 1 x Standard Linear Drain Tray Extension 24" x 60" + $98.00. Affordable Concrete Retaining Walls: Burns. 2. Schluter-KERDI waterproofing membrane over solid backing. Hang the cement boar. Answer (1 of 2): Yes. - Get concrete retaining walls installation - Serving the Burns area. Parr Lumber Company was established in 1930 by Dwight Parr Sr., in the Pacific Northwest and remains a locally owned family business today. Concrete Shower Pan vs Cultured Marble Shower Pan Plus Waterproofing. This article will outline every single step of the Kerdi Shower Wall Tile installation process, step-by-step. This shower had a leak and was replaced 10 years ago by the previous owner. 8mils Thick - 3.3 ft x 65.7 ft / 216.8 Square Feet, Waterproofing Polyethylene Fabric, Waterproof Membrane Fabric for Shower Walls, Bathroom Floors, Sauna and Steam . You absolutely need to include some sort of substrate (cement board, green board, regular drywall) with the Schluter-Kerdi waterproofing kit. Use tile spacers and a laser level to ensure even spacing between tiles. We are still most comfortable with full plumber's pan over the curb, including glue-on preformed corners, and also a second layer (usually Kerdi but can be paint-on) on top of CBU wrap over curb. I like the Kerdi product for my walls because of the pre-fab niche, and lightweight materials and smaller board sizes that are available. Both may be effective substrates, but Kerdi Board boasts significant advantages. The resulting assembly provides superior moisture management as it does not . The Schluter niche is by itself waterproof. Answer (1 of 3): Schluter recommends applying Kerdi over drywall for walls, however, my local building code will not permit this practice - the local building code requires cement backer on the walls of a shower enclosure, therefore, I have done this successfully many times. Mark the coverage of the Kerdi on the hardieboard. It will be water tested before tiling. I know you Kerdi board the walls and then put the shower tray in. Thinset to just outside those coverage marks with the flat side of the trowel, then come back and give it a quick comb with the notched side of the trowel. The shower pan was concrete and saturated with water. The shields seal the pipe openings creating a waterproof underlayment in the wet area installation. Follow the manufacturer's instructions to install the Kerdi Seals. KERDI is installed over the solid backing (e.g., gypsum board, cement backerboard, etc.) The resulting assembly provides superior moisture management as it does not . x 60 in. After the Kerdi goes in, I would pour the final slope for the shower floor and tile overtop. Two bolts are required for each plate and must be located on walls, creating a fully waterproof and vapor-tight enclosure. Kerdi Membrane is designed for direct tile application. Tray dimensions are: 38 in. The waterproof membrane isn't a substitute for the substrate. Michael Parr, Brad Farmer, Nancy Cranston, grandchildren of the founder, play active roles within The Parr Company and continue the proud family ownership. Keep in mind that most tile setters err on the side of caution and brush a waterproofing membrane on top of cement board when it is in wet areas like showers or tub surrounds. Some of our most popular services include: brick repair, brick mailboxes, outdoor kitchens, stone patios, concrete driveways, and retaining walls. length encased with a minimum of 2" of concrete and at least 12" above the floor plate line (UFER Ground).