joist spacing, single layer OSB or plywood subfloor D-W19-T-20 Ceramic or porcelain tile Schluter SET, Schluter ALL-SET, Schluter FAST-SET, or unmodified thin-set mortar joist spacing DITRA or DITRA-XL uncoupling membrane Schluter ALL-SET, Schluter FAST-SET, Step 4: Place and Drive in Backerboard. The subfloor under the tile should be at least 1 1/8 thick, with a minimum of 5/8 thick exterior grade plywood topped by 1/2 cement backer board. An excellent and enduring subfloor can be built with ceramic tiles. Column 2. The right kinds are even dense enough to support a plywood subfloor without any supporting wooden strips underneath. After nailing it down every 6 inches apart with PL 400 construction adhesive, I let it set for nearly 6 months before the The minimum height that my new dishwasher can be adjusted to is 33 3/4" and the cabinet height is 34 1/2". [1,5] Fill seams in the subfloor with caulk. I have read websites saying that 1 1/4" total subfloor thicknes is generally recommeneded. Thick Peel and Stick Vinyl Tile (45 sq. What is the minimum subfloor thickness for ceramic tile ? You can go over either one with the heating system and SLC. If the tile is used anywhere, it should have a coefficient of friction (COF) of 0.6 or higher for slip-resistance. The shortest ones are 1 1/14 inches, while the longest are 3 inches. Pro Tip: Tape over holes and cracks in the wood subfloor or slab before pouring on the self-leveling tile underlayment to keep it from seeping through and leaving indentations. Mark any uneven spots you find so that you can make them level. Chaucer 12 in. Makes floors feel warmer with an R-value of 1.4. Limited 25 year warranty. The ceramic tiles are generally very hard and robust. The subfloor is nailed to the joists, but if it becomes loose or warped, it can cause squeaky floors. Installation Time. Our aim is to help you get the right tile for your floor, whether thats a garage, gym, bathroom, or a combination of our solutions, get in touch to see how we can help you.
Premium luxury vinyl plank collections are 8mm thick. Plywood comes in a variety of thicknesses, beginning at 1/8 inch and increasing to 1 inch. To do this, measure and cut the plywood to fit your room. Tile (VCT) and other resilient flooring. 12x24 tiles should be laid in a fairly thick mortar bed so each tile can be adjusted flush with the other to avoid lippage. I used TGIs 16 inch on center with Menards 3/4-inch exterior waterproof 5 ply plywood as my subfloor. The plywood should be laying on top of the subfloor with no overhang. When you install your vinyl on a wood subfloor, the top plywood should be a minimum of 1/4 thick. The 1/2" cement board over what you have is the MINIMUM requirement. The subfloor for tile can be tricky since it is important to avoid any flexing that would later cause cracking in the tile's grout and in the tile itself. Self-leveling underlayment is a great choice under any tiled floor, but its the absolute best choice when installing tile over an in-floor heating system. Step 6: Establish a Layout Line and Check for Squareness. This thickness will suffice for most floors; however, codes will vary and a second layer is a good idea if your floor covering is going to be a heavy material like ceramic tiles or natural stone. For most subfloors, you will need to add an extra layer of wood. To do this, measure and cut the plywood to fit your room. ChipRivers - :welcome: Can only really give you an approximation - because a lot depends on how flat the whole floor is and whether you will have to build up anywhere. Tile installed over wood floor systems MUST have a minimum of 1-1/4 inches of solid material beneath it. This means you can have a 3/4 inch wood subfloor covered by 1/2 inch plywood, cement board, or approved gypsum fiber underlayment. Then, what kind of subfloor is needed for ceramic tile? Use a minimum 3/4 (23/32, 18.3 mm) subfloor panel cut to smaller 2 x 8 or 4 x 4 sections. Make sure the trowel lines go in the same direction. cartridge adhesive at 3/8 bead. 2 How Thick Should Underlayment Be for Vinyl Flooring; 3 Top 8 Best Underlayment for Vinyl Plank Flooring Reviews. Should I add another 3/8" layer of plywood over my 5/8" plwyood? Improper spacing. The minimum thickness allowed for ceramic tile installations is two sheets of 5/8-inch thick plywood. The right type of plywood for your bathroom's subfloor will vary based on the type of floor you are placing over it. The thickness of the subfloor (including the cement backer board) should be a minimum of 1 1/8 thick, so if you use 1/2 backer board, you would need at least 5/8 plywood. Luxury vinyl tile can go over almost any type of subfloor: concrete, wood or existing vinyl. These materials all have impressive compressive strength, meaning they don't fail if you squeeze them. So the answer is yes, you would need to install a plywood subfloor under the cement backer board before applying the tile. Do NOT line up the second layer with joints in the first layer. 
It isnt a good idea to tile over old floor adhesive in the long run. There are 14 steps to completing this project: Step 1: Prepare Subfloor. The plywood must be exterior grade for all wet areas and it has to be installed in such a way that the joints between each layer do not line up, using what is known as a stagger pattern to keep the pieces from ever lining up. Most new construction and remodels today are not designed for this added floor height and weight. The sheet vinyl must be clean and free of wax or other bond breakers. The sheet vinyl must be single layer only, and well attached. It should not be perimeter-glued, and it should not have a cushion or foam back. The subfloor beneath the vinyl must deflect less than the industry standard: L360 deflection criteria. Its paramount that the structure of the home is engineered to meet all seismic and load-bearing requirements, and meet or exceed building codes. The sub floor should not be a problem if it hasn't been one for other reasons. (also, should underlayment be laid same direction as subfloor? Screw the plywood into the subfloor. Its a super-popular kitchen and bathroom floor for that exact reason. Thats not a lot of separation in a 10-foot radius. Coverage: One 24-oz. Peel-and-stick is considered a low-budget vinyl flooring option. Width Laminate Riser to be Used with Cap A Tread (8) $ 34 98. For this, you want to use a thinset mortar meeting ANSI 118.11 and it should have this number on the label. That means if there's a 5/8-in layer of oriented strand board, then you need at least another 5/8-inches on top of that. You use a heavy-duty drill to drive in the head wood screws through the subfloor underneath. When installing engineered, solid or floating floors that are less than 1/2" thick we highly recommended you add an additional layer of 3/8" or 1/2" thick plywood underlayment. We will normally install 1/4" or 1/2" Durock over a 3/4" sub-floor so depending on the tile and setting material the thickness could range from +/- 7/8" to 1 1/2". Most marble tile is 1 cm thick (3/8" +/-). (with offset seams) thanks, Ray This will create a weak spot. As a general rule, you can lay tile over plywood. Custom Considerations. To avoid buckling, subfloor panels should be spaced with a 1/8-inch gap at all edges and ends to provide room for naturally occurring expansion. However, you need to ensure the plywood subfloor is 1 and inch (3 cm) thick. Just screw the floor down with 1-5/8 in. 
Also known as a moisture barrier, a floor vapor barrier is typically a sheet of plastic that slows moisture from moving through a wall or subfloor. Luxury vinyl planks and luxury vinyl tiles start with a thickness of 5mm and top out around 8mm. Installer should wear NIOSH/ MSHA-approved dust mask. These products are much thinner, measuring between 0.1 and 0.2mm with a wear layer of no more than 3 mil. See All The Steps. Choose tile direction according to the size of the room. That means if there's a 5/8-in layer of oriented strand board, then you need at least another 5/8-inches on top of that. Unglazed ceramic tileor quarry tile as its sometimes calledusually boasts a COF of .70 and over. Exceeds ASTM D3498; dry, wet, frozen and gap-filling adhesion tests. Titebond offers the right mix of products and technical advice to help homeowners, hobbyists and DIYers of all skill levels achieve the best results possible. backerboard or 5/8 ply+1/4 in. b-board? The subfloor under the tile should be at least 1 1/8 thick, with a minimum of 5/8 thick exterior grade plywood topped by 1/2 cement backer board. Overview: Preparing your Subfloor for Tile. WOOD Floors, Interior - Ceramic or Porcelain Tile 5 19.2" (488 mm) o.c. The tiles have a lustrous finish that never needs waxing. Step 7: Prepare Tile Layout. Ceramic tiles come in various thickness, a 8 x 12 could be 1/8 if it's a wall tile or as much as 3/8 if a floor tile. Originally, mortar beds were intended as a leveling and load dispersing layer over a subfloor that met the standard L/360 criteria. Its the 4mm thick, solid oak lamella or top layer that determines the number of times the floor can be sanded. accommodate the addition of an underlayment that is 1-1/2" - 2" thick. Plywood is the most common type of subflooring. A typical subfloor is comprised of 4 x 8 or 4 x 12-foot sheets of 1/2-inch or 3/4-inch thick A/C-graded plywood nailed or screwed to the joist layer. Am remodeling, and installing tile floor. Re: How thick should a kitchen subfloor be? That means the subfloor for floor and shower tile should be a minimum of 5 8-in. Arrange the plywood on the first layer of wood. For floor tiling I would use a 8mm trowel depth with a flat back spread of 2mm on the tile to provide a solid bed fix method of tiling advised for floors. When youre installing an interior subfloor using 3/4-inch plywood, youre going to want screws that are labeled #8, #10, or #12. Wood floors may be installed over subfloors that are out of level, such as a ramp, but should still fall within floor flatness tolerances. 
For most subfloors, you will need to add an extra layer of wood. When nailing down a wood floor, the subfloor should be flat to within 1/4 in 10' or 3/16 in 6'. There has been quite a bit of debate regarding this subject in the tile industry. (Im assuming here that youre not talking about a concrete slab foundation.) and high sand to cement mixes were commonplace). A smaller-tile installation, like subway, requires more time than larger 12-by-12 or 16-by-24 pieces. It really depends on the tile selected and what you will be using for an underlayment. drywall screws spaced every 6 in. Floors may be stone, wood, bamboo, metal or any other material that can support the expected load. 04-18-2006, 01:44 PM. Use oriented strand board, conventional plywood, or better yet, a waterproof product like WonderBoard or HardiBoard which are concrete-based products. Its also recommended to use a cement backer board on top of the plywood, but some tilers make a cement backer board by hand. In addition to the visible surface flooring materialthe carpet, tile, A well-installed subfloor should last as long as the house itself, but OSB is slightly more flexible than plywood, so it is not the best choice under heavy flooring like ceramic or stone tile. The subfloor and the laminate's foam underlayment protect against water vapor coming up from the concrete slab. Helps promote healthy indoor air quality. The subfloor is thick, not very pretty to look at, and hard to walk on. If a contractor is charging $15 per square foot, a 100-square-foot room would cost $1,500 in installation costs. On all floors: Ensure subfloor is not damaged. Some adhesives leave a residue on the subfloor but some do not. plywoodI always use 3 4-in. So it looks like I've got 3/4" in which I need to fit the ditra, tile, and thinset. A successful tile installation project requires a level surface. adhesived & screwed to subfloor) -. It doesnt need to be thick, it just has to cover enough to ensure a flat surface. Floor covering: This is the finished, visible flooring surface, such as hardwood planks, carpeting, ceramic tile, or vinyl.This is the layer that you see and walk on. There are several factors that determine what subfloor thickness is optimal for added benefits like insulation. Joists are 2x8 16 o.c., subfloor is 5/8 plywood perpendicular to joists, for underlayment should I use 3/8 plywood+1/2 in. The subfloor under the tile should be at least 1 1/8 thick, with a minimum of 5/8 thick exterior grade plywood topped by 1/2 cement backer board. Good luck with your project! Be sure to screw the edges. The subfloor under the tile should be at least 1 1/8 thick, with a minimum of 5/8 thick exterior grade plywood topped by 1/2 cement backer board. Column 1. With a trowel, scoop out and spread enough mortar on the wood subfloor to cover an area slightly larger than your first piece of backer board. The subfloor must be structurally sound as well as thick and stable enough to hold the weight of the tile without moving or flexing. Minimum Thickness, mm. Length x 0.039 in. Tile. The screws hold down the plywood and the plywood holds down the foam. 5/16 ceramic tile. 
Answer (1 of 9): Mathew Lohden gave an excellent answer, but I would like to add something as you specifically wanted minimums. drywall screws spaced every 6 in. Use oriented strand board, conventional plywood, or better yet, a waterproof product like WonderBoard or HardiBoard which are concrete-based products. Adding a layer of conventional backer board will add to the deflection problems--not remove them. joist spacing. underlayment. Thats not a lot of separation in a 10-foot radius. Plywood is made by gluing alternating layers of wood veneer. I bought hardiebacker ez grid 1/4" thick cement board and the instructions say that there should be a minimum of 5/8" plywood underneath. b-board? Thick mortar beds were much more common decades ago.
If you have a concrete slab floor, the slab itself may be considered the subfloor. Each tile measures 12 inches by 12 inches and is approximately 0.06 inches thick. Either 3/4" (19mm) thick or 5/8" (16mm). However, theres an easy way to test! ft. Protects any finished floor type. To minimize the thickness of the floor covering, a The thickness needed for subflooring depends on the type of floor that will go on top and the primary purpose for the subfloor. Subtracting the Copy and paste this code into your website. While I prefer using 1/2 cement backer board over a plywood subfloor, you may be able to get by with 1/4 backer board instead. 1/4 plywood (constuct. When you install your vinyl on a wood subfloor, the top plywood should be a minimum of 1/4 thick. If you are using plywood for your subfloor, you should use a minimum of one layer that is between and thick. (also, should underlayment be laid same direction as subfloor? longtimer. So, it is imperative to select the appropriate thickness of subflooring relevant to your homes structure. A inch x inch square notch trowel is typically the right choice for 22 and 33 mosaic tiles that come in sheets. With a typical combined plywood thickness of 1-14 in., use at least 1-12 in. Your sub floor: The old floor is almost 1 3/4 inch thick. If your subfloor has excessive voids or bends, you will need to level your floor before you begin installation. The essential tool for hobbyists. Even if you use a waterproof underlayment membrane, the floor will still be either 1/4 or 1/2 higher than the subfloor, plus the thickness of the tile and adhesive. for floors with 16-in. backerboard or 5/8 ply+1/4 in. Remember that you need a very flat surface to work on. depending on the finish floor that would be used, many times they would add an Underlayment, (in theory it would make the floor flater, and the joints of the sub floor would not show if the proper underlayment was used, if you have a good sub floor one most likely could remove the underlayment, and either start with new If spaced too tightly the plywood will buckle and crack the tile. To compound the problem the height difference varies throughout the main floor (from 1/4 1) depending on location. Length x 1/2 in. Do you have to use cement board under tile ? For hardwood, tongue-and-groove CDX plywood rated AC with a 5/8- to 3/4-inch thickness is ideal; ceramic or porcelain tile does best with 3/4-inch AC plywood; and stone should use 19/32-inch tongue-and-groove plywood. Simply place the peel and stick carpet square on the floor, and press down to adhere it to the floor. As long as the subfloor is 3/4-in. The minimum thickness of plywood for subflooring is about 5/8 inch. Step 2: Mix the Mortar Adhesive. ft./case) smooth subfloor, and the tile was rolled after installation it should be sticking to the subfloor. Tile. Marble is like any ceramic tile or natural stone when it comes to cracking. This will require at least 7/8 inch plywood and 1 inch thick of OSB. It will break or dislodge if the surface bends under the load. The adhesive is already applied to each tile and all you have to do is pull back the plastic sheet to expose it. The subfloor under the tile should be at least 1 1/8 thick, with a minimum of 5/8 thick exterior grade plywood topped by 1/2 cement backer board. The Coach demonstrates how to install a 3/8 plywood subfloor in a bathroom. Plywood works as a subfloor in nearly all situations.
Use 1/4-in. Coverage varies based on bead size and weather conditions. A floor is the bottom surface of a room or vehicle. You could also use a inch x inch square notch trowel. Start clean. Vacuum out the joints in the subfloor and in the corners where the walls meet the floor. The additional underlayment should be glued and screwed 1 7/16 total height. Installing an uncoupling membrane over a wood subfloor. Floorlot LVT Luxury Vinyl Tile & Plank Flooring Underlayment with Double Vapor Barrier; 3.3 3. Traditionally, exterior grade plywood has been the subfloor material of choice for many bathroom flooring projects. First, make sure you have a 1 1/4-inch sub-floor before any tile goes down. You can do this with a moisture meter, ensuring that your reading is no more than three-pounds per 1,000 square feet per 24 hours. The size of the tile can also affect the installation costs. ft. / Carton) BaseCore 12 in. Comb the mortar with the notched edge of the trowel at a 45-degree angle to the floor. As such, compressive strengths could be very low (less than 1000 lbs. #3, with one exception, all tile backer boards are non-structural. You must also be sure to maintain a 1/8 inch spacing around each sheet of plywood.The plywood expands with changes in humidity. QuietWalk Plus Underlayment for Hardwood, Laminate, and Vinyl Plank Flooring; 3.2 2. Unglazed tile is also the same color all the way through, so any cracks or The subfloor under the tile should be at least 1 1/8 thick, with a minimum of 5/8 thick exterior grade plywood topped by 1/2 cement backer board. 3/4 sub under #30 felt under thinset (1/2" notched trowel) under 1/2" Hardie screwed on 4-6" centers under thinset/heating grid under thinset under tile. Photo/Tim CarterThis marble tile floor may have taken two days to install, but it was well worth the effort. In addition, youll find that steel screws come in a number of different lengths.