Can the subfloor support the weight? Exterior plywood contracts and expands, which makes it hard to bond with other materials. Use your drill to make this job simpler. ANSWER ANSWER - We normally don’t recommend to bonding to exterior glued plywood (EGP), but it can be done in interior dry applications. While most floor tile these days is installed onto a layer of cement board or similar backerboard it is possible to lay tile directly over plywood.

The bottom line is that you should not apply tile directly to a plywood sub-floor. To install ceramic tile over wood, the wood surface must be structurally sound enough to support the weight of the tile. HOWEVER, the floor must be properly reinforced to minimize flexing; the joists, if they're 2x8 (newer code) and not 2x10 (older code), must be braced every four feet with cross-braces, which minimizes independent flexing of each joist and the subfloor above. This will cause either the tile itself to crack and even come loose, or cause the grout to crack inside the joints. What are the Pro's and Con's of tiling to EGP - Exterior Glue Plywood? A poor ceramic installation will delaminate from the subfloor, split at the grout lines, or worse–crack directly across the tile. It is possible to tile directly onto tongue and groove wooden floors, but the high amounts of deflection/movement will mean that an ultra-flexible (S2) tile adhesive is required. I have always heard you have to have the backer board because of the different expansion/contraction rates of wood vs. cement. I can tile directly over this floor because it is more than 1 1/8″ thick without adding backerboard (would have to remove all plywood to do this) – correct? There may be times when you want to bond tile directly to plywood, or another wood surface, rather than screwing down backerboard first. Then, in either case the subfloor should probably be … The answer might shock you but the simple answer is "Yes" - you can tile directly to plywood. Thinset mortar is the primary method for installing ceramic or stone tiles onto new surfaces, acting like cement to bond the tiles into their new homes. Directly tiling onto floorboards isn’t usually recommended as movement beneath tiles could result in unwanted cracks and breakages. No tile pro worth his/her salt would recommend to tile directly on plywood. Why? Have contemplating using 1/4 backerboard, but this, with the tile and the 2 beds of thinset would create a 1/2 to 5/8″ height descrepancy at the oak flooring in living and hallway. 3/4" is probably all right if on 16" centers, but is the lower limit. No slipsheet needed. Tile installation standards are established by TCNA, the Tile Council of North America. bbcamp. Chipboard, cushioned vinyl flooring, particle boards of any type, oriented strand board (OSB), interior-grade plywood, tongue and groove planking, and hardwood floors are unsuitable substrates for direct installation of ceramic tile. This will cause either the tile itself to crack and even come loose or cause the grout to crack inside the joints. The important thing is that the floor not flex. In order to install tile directly over the exterior plywood, you will need to use a special bonding agent in order for it to hold up. I have hurt my back and couldn't complete it the... Tiling on top plywood flooring Tiling onto plywood using a standard tile adhesive can be problematic, initially I would make sure that the plywood surrounding the pipe work is secure and that you don't have any movement in it. Oct 22, 2015 … Nothing stiffens a floor in preparation for tile as well as plywood panels. Tile Floor On Plywood. Before I list this costly repair I would like some thing concrete to back my findings. As a result, the grout lines and the tiles themselves can … Second, the strength of … BONDING TILE DIRECTLY TO LUAN PLYWOOD ©2013 6/13R The information in this bulletin is presented in good faith, but no warranty, express or implied, is given nor is freedom from any patent in as much as any assistance furnished by CUSTOM® with reference to the safe use and disposal of its products provided without charge. Is this appropriate at all? Ceramic and porcelain tile are so frequently installed at or above grade level on a cement board underlayment or directly on plywood that it almost seems novel to install tile directly on concrete. Laying tile directly on a surface like plywood or an existing floor can cause major problems down the road. Can you tile directly to plywood with thinset? Shrinking and swelling will crack the grout, can pop off tiles … This excessive movement will cause bond failure and cracked tiles. The tile flooring was installed directly to the plywood. 2. The subfloor, which is typically a layer of plywood or oriented strand board (OSB). Cementitious backer units are not totally rigid (somewhat flexible) and when placed over non-gaped plywood, buckling of plywood edges will be transmitted through the backer unit. Mastic adheres the tile directly to a wooden sub-floor, to a wooden back-splash or onto a piece of plywood. Tile installed directly over wood will likely buckle as it absorbs moisture, and the wood will be susceptible to mold and mildew. Thanks! Gerald, Plywood is a fine substrate for tile. Hello, I have laid down wbp plywood on the floor in the kitchen a year ago. Can you install tile on a plywood backsplash? In my experience tile applied directly to plywood will be a short lived installation and more likely to encourage rot in areas near a tub or shower. Then you want to install screws into the concrete board in each of the holes. ': Unfortunately, tiling directly to floorboards is not recommended. Tiling on old plywood. Does Peel & Stick Tile Work on Plywood?. The TCNA spec shows this detail with the tile bonded directly to the plywood, but few tile experts recommend doing this. As a rule of thumb, when it comes to tiling, always ensure the surface is even and secure for a long-lasting finish. Plywood on concrete floor before tiling. You will need to purchase a polymer mortar that meets required standards. Glue, called mastic, is the least expensive method for installing tiles. When the tile is laid on top of a plywood subfloor, the plywood will expand over the years. The more important question is "Should you?" 03-11-2010, 02:53 PM. I'll either use 1/4 inch cement backerboard or a proprietary product like Schluter Ditra. If you’re wondering whether or not you can lay tile directly on a plywood subfloor, the answer is no. The detail shown is essentially TCNA’s F150 method – with the addition of an uncoupling (crack-isolation) membrane. You may also want to tile an outdoor shed, or tile plywood boards for display. Sponsored Links. Long answer to 'Can I tile directly onto wooden floorboards? Center your tile in the bathroom. Installing Over Wood . They are installing it directly onto the plywood subfloor using a metal cheesegrater type material instead of backerboard. Agent Zed. Plywood makes a smooth underlayment for peel-and-stick tiles. Just use a good thinset. Yes, with a good modified thinset. Then I would remove any loose tiles and scrap away any adhesive that is left on the ply and tile, you want the ply and tile to be perfectly clean for the next stage. PLYWOOD SHEETS and will likely result in bond failure. Laying tile directly to plywood is a really bad idea. While plywood is not recommended as a wall substrate for the direct fixing of tiles, the advice for floor tiling remains the same as per BS 5385 Part 3: 2014. According to backer board manufacturers and tile setters, installing backer board directly over an old, solid-wood subfloor is risky for a couple of reasons: First, changes in humidity make solid wood shrink, swell and cup more than plywood. You CAN bond tile directly to a plywood subfloor and expect it to last. Installing Tile Directly on Concrete . One question that folks new to ceramic tile frequently ask is whether they can lay the ceramic directly on top of a plywood or OSB subfloor, using a thinset cement or liquid nails to glue down the tile to the wood. Installing ceramic floor tile to a plywood sub-floor has unique challenges beyond that of installation on a concrete floor. My question is: Can we/should we put tiles directly on plywood? The underlayment for ceramic tiles, is the final layer that lies directly beneath the surface flooring. Plywood will expand and deform if subjected to moisture or humidity. To install the concrete board, apply tile adhesive to the back, then press it down against the plywood. Backerboard can double the thickness of an installation, which can be troublesome in some locations. It was agreed that for existing timber floors, plywood overlay is still acceptable to tile to in small internal dry areas, if it is a minimum 15mm thick and of an appropriate quality exterior grade. The most suitable materials for the subfloor are concrete, plywood and cement board. The reason being: plywood is not dimensionally stable, it can shrink, swell and otherwise move around, no matter how many screws are holding it in place. I am concerned that the way the marble tiles are being installed will cause problems later (cracks in tile, splits in grout). Can it be done? In the Pro list right at the start has to be "Cost Savings" "Speed" and "low build up height" Plywood or OSB (flakeboard) can expand and contract at too high a rate to be a stable foundation for tile. Tile always needs an underlayment or layer of cement backer to lay on top of, especially in the case of plywood. The floor and subfloor combined should be at least 1-1/8 inches thick for proper support. If you put tile directly on top of plywood, it will chip and break. Will humidity be a problem? … installation is a little counterintuitive though. Yet this application does make sense, since concrete is heavy, solid, and is typically thought of as an unbending, uncompromising material. Step 4 - Center. There are thin-set dry set mortars design specifically for adhering ceramic tile to plywood that is designated as an ANSI A118.11 thin-set mortar. This is because plywood will expand and contract over time, causing your tile … Carpenters are used to … While you can lay tile directly over a concrete slab using thin-set adhesive, don’t make the mistake of applying tile directly to a plywood subfloor. Alternatively, another option is to strengthen the substrate with either a layer of floor screed or by overboarding with plywood/tile backer board, and then using an improved flexible (S1) tile adhesive . Or one with a latex admixture. 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