There is already 5/8" plywood underlayment, can I add another 5/8" sheet and have enough strength for tile? Q: I am planning on installing 3/4′ maple hardwood floors.Currently the subfloor is chipboard. For joist spans 16 inches or less, NWFA recommends minimum panel thickness of 5⁄8-inch plywood or 23⁄32-inch OSB; the building code requires 5⁄8-inch plywood or OSB. Plywood subfloor thickness for tile flooring. Lay tiles with a 3mm bed of improved flexible tile adhesive (S1) — such as weberset SPF or weberset rapid SPF — and leave joints of at least 3mm wide for grouting and make provisions for movement.. That said, any tiles that are the same and from the same batch will be the same thickness. ( America Tile Council and Tile Council of America.) Some experts suggest that 15/32-inch plywood should be standard if the underlying floor joists are spaced 16 inches apart or less, but slightly thicker 3/4-inch plywood should be used for joists spaced further apart. They make engineered hardwood flooring by laminating a solid hardwood veneer on top of a plywood base or similar material. Plywood for tiling on floors? The … In some cases, the floor covering is isolated. Can I glue and nail another 1/2" ply to bring thickness to at least 3/4" subfloor. What is the minimum thickness of plywood needed to be applied for the hardwood to install properly? The original flooring was vct which has been covered with vinyl sheet. The recommended thickness of the plywood subfloor is governed by the spacing of the joists. Minimum plywood thickness for tile floor. X5 was a fantastic product to work with. Floor istallation requires that the total thickness of the substrate must be minimum of 1¼ “ prior to setting tile as per the TCNA / Tile Council of North America. frogbit ... frogbit 30 Jul 2020. minimum thickness of ply subfloor. The thickness of the layer of tile adhesive is calculated taking into account the dimensions of the lining material. Installed tiles with Ardex X5. It comes in ¼â€ to ½â€ thickness and it is used as an underlayment for wall tile. For small-size tiles (up to 10×10 cm), it should not exceed 2 mm. What thickness should the subfloor be if you are planning on a tile floor. Installed radiant heating wire on top of that and yesterday I poured Ardex Liqiud Backer board over the wires. The adjacent floor (not being replaced) is the original solid hardwood. Cement board can also be used on exterior applications. However, in order to match the thickness of the adjacent … Available in a range of thicknesses and has machine grooved long edges with a plastic tongue to form a tongue and groove joint between sheets. Tile installed over wood floor systems MUST have a minimum of 1-1/4 inches of solid material beneath it. House is a bungalow built in 1973 located in Alberta Canada. The most forgiving is 1” to 2” vitreous porcelain and the least in my experience is 18” Travertine marble. Discussion in 'Floors, Stairs and Lofts' started by Stivino, 11 Nov 2013. This means you can have a 3/4 inch wood subfloor covered by 1/2 inch plywood, cement board, or approved gypsum fiber underlayment. The national wood flooring association recommends a minimum plywood panel thickness of 78 inch for joist spans of 192 to 24 inches and a minimum plywood panel thickness of 58 inch for joist spans of 16 inches or less. This is both the ATC and TCA guide line. Plywood comes in a variety of thicknesses, beginning at 1/8 inch and increasing to 1 inch. This type of plywood comes in a variety of thicknesses starting with 3 mm . You need hundreds of screws to make sure its secured correctly (every 150mm). Before starting, Remove Ceramic Tiles (if present) and ensure your floor is flat and strong enough to meet industry standards (two layers of plywood totalling 1-1/4-inch thickness). They can make the veneer from almost any species providing a … While there are many ways to use teak and holly plywood, marine . Most prefer a minimum thickness of at least 1 14 … The veneer is a slice of wood, usually about a 1/8-inch (3.18 mm) thick, glued to the plywood base. Plywood flooring is a strong, durable pre-sanded panel suitable for flooring in residential, commercial and industrial applications, particularly where added strength is required. Hi all, I'm doing a spot of DIY in the bathroom and need a bit of reassurance: Is 18mm ply strong enough for tiles over 2" thick joists spaced 360mm between centres? For the best results when tiling onto plywood floors… It is rot resistant with knots replaced with football shaped plugs to give it a smooth moisture-resistant surface. For work you will need materials: Grout joints. There's no single standard thickness for wall and floor tiles - different types of tiles for different purposes are likely to be different thicknesses. 12mm ply (when combined with the thickness of the floor tile and adhesive) can result in a sizeable step into the bathroom, which can represent a trip hazard. Make sure you use the correct hardie screws. Preparing a Plywood Subfloor for Tile . yes 23/32" – shirlock homes Dec 11 '11 at 23:28 I decided to get 23/32" T&G OSB since the T&G cost was not that much more. … The larger and more fragile the tile the stiffer the substrate should be. not 1/4" vinyl and tile underlayment, I should have said sub-flooring. When NWFA Guidelines minimums are not met, the recommendations are to overlay the existing subfloor material with a 1⁄2-inch panel product or add … rangorgubbins, 26 Oct 2018, in forum: Floors, Stairs and Lofts. Thickness of Plywood The thickness of your plywood subfloor depends on the joist spans. The room is 5' x 12'. I am currently working on a main floor bathroom tub/shower combo reno and would like to know the proper construction build up for a porcelain tile floor. The thickness of the solution for small square elements with sides from 5 to 7 cm after pressing is 1.1-1.3 mm. In the kitchen: I ended up putting 1/2" plywood over the existing sub-floor. Lay tiles with a suitable flexible tile adhesive. For this reason, ceramic and porcelain tile floors can be considered somewhat delicate, despite the inherent strength of the material. Upstairs area to be bedroom/bath sub floor is 5/8" plywood. If you are tiling on a plywood floor with tiles above 400mm by 400mm in size, or heavier tiles … The minimum thickness allowed for ceramic tile installations is two sheets of 5/8-inch thick plywood. April, 2002. … 1/2' cement board is for walls not floors. This depends a bit on the type of tile. When choosing tiles take into account the color scheme of the interior. Thread starter Dan1234 Start date May 29, 2019; ... Do you realise the bs for ply is glued and screwed at 150 centres thats about 180 screws per sheet and also the minimum thickness for overboarding is 15mm , no one stocks it so you will be using 18mm . After reading a bunch of posts on this subject, 1 1/4" thickness seems to be the minimum thickness recommended, (usually 3/4" plus 1/2"). Because of issues of moisture, movement, and adhesion, ceramic tile will work well with certain types of subfloor/underlayment systems and can go dramatically wrong with other subfloor … The thickness of your plywood subfloor depends on the joist spans. To finish the tiles in the bathroom, it is recommended to use epoxy compounds. What Are Engineered Hardwood Floors. The deflection on a floor less than 1 inch thick causes the tile to crack or pull free of the mortar. Generally, the minimum thickness for plywood is 5/8 inch; for OSB it's 23/32 inch. The quality of your finished ceramic tile project depends on the quality of the surface beneath it. If your tiles are different thicknesses, there's likely been an issue with that batch. In addition, the plywood must be treated with an antiseptic. Keep in mind that for mechanically fastened floors, OSB doesn't hold fasteners as well as plywood, so you need to use a thicker material to get the same holding power. 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. Plywood is the most common type of subflooring. I have to tile the bathroom floor apparently. I called an installer and he told me he would not install tile on 2nd floor. 2x10 joists 16" oc spanning 13', developed basement below. Plywood is a natural product and can vary in quality. 2011-07-05T09:45:02+01:00 Answered 5th Jul 2011 Yes you need at least 9mm thick plywood on bathroom floorboards screwed down prior to floor tiling layed with flexible floor tile adhesive. 5/8" + 1/2" ply minimum, thinset (from powder), 1/4" hardie screwed down and then thinset (from powder) and finally your tile. "Should" be fine won t cut it with ceramic , you need an additional 1/2" ply cross layed, glued and well nailed or … Installed 1/4" CBU. Replies: … I plan to remove the existing underlayment/VCT/vinyl and replace with a new plywood underlayment. Under British Standards BS 5385 Part 1, plywood has now been excluded as a suitable substrate material for the direct fixing of wall tiles, therefore when tiling on to walls, a tile backer board is required.However, tiling onto plywood floors is still acceptable under British Standards. Follow up with a minimum of ten coats of exterior varnish on edges, . No! The thickness needed for subflooring depends on the type of floor that will go on top and the primary purpose for the subfloor. However, as joist spacing increases, The National Wood Flooring Association recommends a minimum plywood panel thickness of 7/8-inch for joist spans of 19.2 to 24 inches, and a minimum plywood panel thickness of 5/8-inch for joist spans of 16 inches or less. If I decide to remove the chipboard all together, how thick of plywood subfloors will I need? The tiles will be 300x600x10mm and there'll be a layer of decoupling membrane between them and the ply. Author's Notes:. The recommended shed floor plywood thickness is 3/4 inch pressure-treated exterior-grade CDX plywood. 3/8" plywood will add nothing to the strength of the floor. To meet TCA stiffness requirements, floor framing should be no more than 16 inches on-center with minimum 19/32 -inch plywood subflooring. Preparation for work. This type of plywood won’t sag when used on a 12 inches joist structure. The floorboards are a right mess - it looks like whoever fitted them didnt cut them to size with a saw, but instead just got their dog to chew them. Cheers, James Plywood thickness on bathroom floor? The original flooring was VCT which has been covered with vinyl sheet. Type and size of tiles. ... gluing plywood on top of stone tiles before laying vinyl. Or do I have to rip out all old good condition flooring a … Im interested in installing those porcelain wood looking tiles on about 800 sq feet on the 2nd floor … Upgrading to 23/32- inch plywood will stiffen the subfloor by almost 80% and provide a more solid feeling floor. 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