Plan so the joints in the backerboard won’t line up with the joints in the subfloor. You would need at least 1/2″ concrete backer board that would require thin set and to be screwed down. To avoid building up the floor too high, you can use 1/4-in.-thick backer board instead of 1/2-in. This is all setting on a 2”x6” tongue and groove subfloor. The old-fashioned mud method of floating a thick mortar bed in preparation for the tile has given way to using cement backer board over a plywood subfloor. These convenient panels of cementitious board provide an instant flat, hard surface that bonds with the thin-set adhesives or mortars used to install tile. Everything I have been reading says to use thinset for the backerboard. He swore up and down this would be a perfect floor, no additional ply, thinset, etc were needed. This is a small bathroom measuring 60" x 104" Joists are 16" on center. Tile over plank subfloor I'm planning on installing 12" ceramic tile flooring as part of a kitchen renovation in our new house. Floor is 100 year old 3/4 t & g pine over 3/4 pine plank subfloor. Also, did you use thinset between the ply and the Hardibacker? thick cement board. Not Staggering the Seams. Prepare a solid, squeak-free subfloor One of the keys to a long-lasting tile installation is the underlying subfloor. Hardibacker or concrete boards for ceramic tile, on the other hand, provide a stable base for the tile installation, which means the existing flooring needs to be taken into consideration. Once your subfloor is good to go it’s time to install the DITRA. The hardwood flooring must be installed crossing the subfloor boards (90 degree angle). I've removed the old floor covering and discovered that we've got a subfloor that consists of 3/4" thick, 7" wide wood planks spaced about 1/4" to 1/2" apart. What subfloor should HardieBacker® cement board be installed over? HardieBacker boards must be flush with subfloor during installation. Out with the OSB. Toilet flange is 1-1/4" above plank subfloor so these measurements would seem to add up ok, I hope. The backer board will also stiffen the subfloor system which, in turn, will reduce deflection and subsequent cracking. Can I simply put the thinset directly on the plank subfloor? The big problem with tight subfloor seams is they don’t allow for expansion and contraction. I have that in my residence. • Begin the fastening pattern in a corner of the board, then fasten the two adjacent edges. DITRA is also noted for its ease of use when compared with materials like cement backer board. I read that if installing HARDIBACKER, we have to lay thinset on the subfloor and then screw it to the subfloor. Using a sliding motion, firmly and evenly embed your HardieBacker Cement Board in the wet mortar. I am hoping to use Custom Building Products Wonder Board 1/2 in. Floor is rock solid and nailed tight. The backerboard should completely cover the subfloor joints. The minimum subfloor specified is 5/8" exterior grade plywood or 23/32'' exterior grade OSB subflooring. Let’s dive into the installation process. Cement board over top, or rip out what I had just finished and put cement board directly over the plywood subfloor? An Alternative to Using Backer Board Over Subfloors Prior to Tiling: When I built the house I wanted all my bathrooms, hallways and the kitchen floor to be tiled which was close to about 1500 square feet. The result of Schluter-DITRA’s performance is a tile floor with outstanding durability and resistance to cracks and moisture. Aug 30, 2019 - Explore Bill Perkins's board "plywood subfloor" on Pinterest. You need to put a layer or plywood, minimum 5/8 IIRC, over those boards, then mortar the backer to the plywood. Do a dry run and lay the backerboard down to fully cover the area you plan to tile. However, a homeowner may need to raise the floor slightly before installing tile and lack the experience or time to install a mortar bed. Those 1x8 boards won't give a solid foundation and will flex. Now, this is an area that the plywood installers will be familiar with. On all our jobs where we use Durock for floor tile we install 1-1/8" Advantech with joists 16" OC. The various brands of cement board, such as HardieBacker, Durock, DenShield, and Wonderboard have become a standard tile backer material for nearly all ceramic, porcelain, and stone tiles for floor, wall, and countertop applications. Over time, that will cause tile to pop loose or crack. I went back to Lowe’s and picked up DUROCK cement backer board instead, plus thinset, the proper screws , and alkali-resistant fiberglass mesh tape . 4. Using the screw pattern as a guide, fasten your HardieBacker Cement Board with nails or screws every 8” on center over the entire surface. That’s why it was named the most preferred brand of backer board by tile installers and contractors, according to the 2019 Tile and Stone Report conducted by ClearSeas research in partnership with the National Tile Contractors Association and TILE Magazine. Hence the need for 1/8″ gaps between seams. If the plywood subfloor you’re placing is 5/8 of an inch thick, you need a screw about 1 5/8 inches long. I've seen it in other houses. You need to remove the Hardie attempting to salvage if possible, and start over with someone that is a tile setter and not a handyman. 2. Contractor is trying to talk me into replacing the existing diagonal plank subfloor from when the house was built in 1950. Wood Strip, Board, or Plank Subflooring These subfloors must meet structural requirements. If installing over an appropriate wood surface, sand the wood to make it smoother, and remember that the installation will work better over a subfloor at least 1-1/8 inches thick. HardieBacker® cement board is made better to install better and perform better. I'm curious to know what type of 3/8" plywood you installed. It has to be rock solid before you lay the 1/2-in. Whatever your subfloor is made of, be sure it’s squeak free before you install the cement board. Install Schluter DITRA Over Wood Subfloors. This underlayment also acts as a waterproof membrane over moisture-sensitive subflooring such as plywood and OSB. Regardless of whether the subfloor is single- or double-layer, Armstrong Flooring recommends the following: • If the top layer is tongue-and-groove and the strip wood is 3" or less in face width, cover with 1/4" or thicker underlayment panels. I … If needed, cut the backerboard to fit in small spaces or around obstructions. 2. When installing vinyl plank flooring over existing floor materials, underlayment may not be required, but it can help with cushioning and sound reduction. Backer board over hardwood may last a bit longer but I wouldn't do it. Also if the SUBFLOOR is like a deck made above the ground, just being held with 2x4's, what size hardibacker should we use, 1/4 or 1/2? Return to the corner and fasten in a diagonal pattern from that corner until the board is completely fastened. Backer Board and the ¼â€ tiles right on the subfloor. If the tile is being installed in a bathroom, consider applying an isolation membrane over your wood subfloor to further protect against expansion and contraction. Do I need to put down thin plywood over the subfloor and then install the HardieBacker? The TCA-150 calls for 1/2" underlayment, but that's also assuming it's over a 5/8" plywood subfloor. The contractor laid Hardi500 over the plank subfloor and bonding it down with about 6 tubes of liquid nails, the hardiscrews along the joists and about a million 1" crown-point staples. The majority of the subfloor is in good shape and sturdy. Re: Installing tile over diagonal solid subfloor Even if the 1x10 is a true 1" I don't believe it will be sufficient. I am replacing the carpeting in my hall with 12” ceramic tiles. Should I run the seam of the HardiBacker perpendicular to the floor joists or perpendicular to the plank subfloor? 1. If the subfloor is wood, won't the thinset cause the wood to get moist and possible rot over time? Mix up modified thin-set. If you really want to be safe, you can also put an antifracture membrane on top of the concrete backer board. When subfloors are nailed in place, the floor can become extra squeaky, either almost immediately or over time. You cannot put a cement backer board over that. level 1. … Apply a supporting bed of mortar or modified thinset to your subfloor with your trowel. And my '07 manual shows a lack of backerboard in the sandwich. Engineered, Solid Wood or Floating Wood Flooring that are less than 1/2" thick can be installed over a wood plank subfloor as long as the 3/4" plank subfloor is flat. 1. I believe he needs to beef up the sub-floor with 1/2" ply screwed/glued down over … If you're laying tile in any of the rooms then planks will need reinforced with 15/32" ply laid over the planks however. The plank subfloor is running perpendicular to the floor joists. Installing tile over a wood subfloor is a lot easier today than it was when I started my remodeling career. Then install a 3/8" minimum ( 1/2" is prefered ) plywood CDX underlayment over your plank subfloor by stapling well with a 16 gauge x 1/2 crown contruction stapler. It is a standard carpet with pad on top of 5/8” particle board. Placing cement boards over the concrete subfloor is an excellent way to create a solid and smooth subfloor. Hardie, or any CBU without thinset under is a fatal mistake that will results in … The main floor is actually the second floor of the house so it's built from 3/4 inch tongue and groove plywood o… We tore out all the hardwood and put in 3/4 t&g plywood glued, mudded 1/4 fiberock and … Using Subfloor Screws to Correct Squeaky Floors. For wood subfloor, a moisture barrier is unnecessary, but underlayment can provide cushion. You … 3. The antifracture membrane would assist with any movement in the subfloor, where the backer board assists with any flex in the subfloor. Concrete is usually a good subfloor on which to install ceramic tile. I am planning on installing 1/2" plywood on top of planks and 1/4" backer board for the 1/4" tiles. It sounds like the subfloor needs help too. Small spaces or around obstructions Products Wonder board 1/2 in I run the seam the! When the house was built in 1950 installers will be familiar with install 1-1/8 '' Advantech joists... 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