OSB. Plywood is actually composed of several layers of wood glued together. When this swelling takes place after the plywood is installed, flooring, roofing, and or siding products can begin to look less than perfect. If you are looking for it to be squeak free. The first is to lay two layers of 3/8-inch plywood over the slab without fastening or gluing them to the slab. Your subfloor provides an excellent, level foundation for the flooring of your home. joist spacing, single layer OSB or plywood subfloor DH-W19-T-16 DH-W16-T-16 Ceramic or porcelain tile Unmodified thin-set mortar DITRA-HEAT or DITRA-HEAT-TB uncoupling membrane and heating cables Latex p.c. The best way to determine whether a mold problem exists on a subfloor is to remove the finish flooring material. I plan to adhere, with thinset, another 5/8" or 3/4" layer of plywood along with a waterproofing membrane. Plywood is rigid and is better at transferring sound - it would not be a wise choice for soundproofing your floor. The standard size sheet is 8ft x 4ft (or the metric equivalent 1.2m x 2.4m) and ranges in thicknesses from 1.4mm to 4.3mm. Poplar or Birch Plywood with a fully sanded face and exterior glue. I just started a kitchen demo today, and once the old cabinets were out I got to take a look at the subfloor. One layer is laid, and the second layer is stapled or glued perpendicularly or diagonally over the top. THEN add the 5 lb. Are you saying it is eventually an adhesive, but not til it fully dries (which takes days/weeks), New comments cannot be posted and votes cannot be cast. “There really isn’t another plywood product out there like it,” adds Key. Snap chalk lines in 8"×8" grid and screw everywhere they intersect. I just started a kitchen demo today, and once the old cabinets were out I got to take a look at the subfloor. 2. OSB, on the other hand, consists of 3-inch to 4-inch strands of wood that are also layered and configured in a crossing pattern, then glued and pressed. Oriented strand board (OSB) is composed of wood strands or flakes compressed with glue. Share Tweet. Although this is not a guarantee that there is mold present, it is an indication of a potential problem area that requires further inspection. Should underlayment be screwed to joists? The site may not work properly if you don't, If you do not update your browser, we suggest you visit, Press J to jump to the feed. 1. Different plywoods use various materials and methods of manufacture, depending on the application for which they're intended. The first is to lay two layers of 3/8-inch plywood over the slab without fastening or gluing them to the slab. Meanwhile, OSB compacts as many as 50 layers of strands into a single sheet the same thickness as that plywood, ensuring a much denser—and heavier—product throughout. Floating subfloor: There are two common methods for this. . So all the screws are really doing is clamping it until the glue sets. Though building codes treat both materials equally as “structural panels,” plywood and oriented strand board (OSB) are quite different compositionally. Typically made of plywood or OSB and ranging in thickness from 19/32" to 1 1/8" thick, the subfloor is truly structural, second only to joists in this respect. mortar Single layer of plywood or OSB Joists, I … Wd it be unusual to have our framer put down two layers of plywood over the joists (one ¾" and one ½"); that way, the ½" layer can be removed at exterior thresholds to get doors to fit with finished flooring a lot better? Subfloor The subfloor is the flat surface on which all other layers rest. The underlayment for laminate floors is a material that provides a sound barrier or protects the laminate from moisture, depending on the type of underlayment you use. .FIYolDqalszTnjjNfThfT{max-width:256px;white-space:normal;text-align:center} Carpenter's glue with glue gun (see container for square footage covered by each tube of glue) Tape measure . This conclusion is correct only under defined conditions. 2. It will also hold up better under flooring accidents like leaks or flooding, and has greater nail withdrawal strength to hold the nail in under stress. If the number of plies/layers is more, the plywood will be stronger and the production costs will be higher . Here are the different components: Joist – the joist of your floor is the bottom-most layer that holds up your entire floor. How thick a layer of self-leveling floor compound can you pour on a subfloor to level it?-Jack. When a roofless, partially built structure takes on water, the plywood or OSB used for floor decking can absorb water, swell, delaminate, and require sanding or replacement before finish flooring can be installed. Plywood is made from thin layers or ‘plies’ of wood veneer glued together so that the grain in each ply is at right angles to the next ply. By combatting moisture issues, this new generation of plywood aims to go head-to-head with the enhanced OSB products. How many layers of plywood do you need for a subfloor? Enough 1/2- or 5/8-inch thick 8 by 4-foot sheets of plywood to cover the floor. ._3Im6OD67aKo33nql4FpSp_{border:1px solid var(--newCommunityTheme-widgetColors-sidebarWidgetBorderColor);border-radius:5px 5px 4px 4px;overflow:visible;word-wrap:break-word;background-color:var(--newCommunityTheme-body);padding:12px}.lnK0-OzG7nLFydTWuXGcY{font-size:10px;font-weight:700;letter-spacing:.5px;line-height:12px;text-transform:uppercase;padding-bottom:4px;color:var(--newCommunityTheme-navIcon)} we are renovating a 1970 built home and have taken out the existing carpet and linoleum, along with the 5/8" particle board subfloor, leaving only a 1/2" plywood layer, not t&g, over joists 16" oc. As one explained it, You now have one big sheet of plywood the size of the room 1 1/4" thick. Laminate Flooring on Two Layers of Plywood Subfloor? When plywood was developed to replace solid-board sheathing for subfloors and decking, builders were generally reluctant to switch to the new product, which ultimately became the standard for subfloor applications. and then … Lauan Plywood, when used as an underlayment, should be Type 1 (Exterior). If existing subfloor is 3/4 " t@g boards- screw 2 or 3 1-3/4 screws into every plank , every joist prior installing 3/4" t@g real plywood. When the square-edged plywood is screwed down to the floor, there is a tendency of the wood shifting while the skoolie is moving. It's made from plywood ranging in thickness from 19/32 to 1 ⅛ inch thick. ._1PeZajQI0Wm8P3B45yshR{fill:var(--newCommunityTheme-actionIcon)}._1PeZajQI0Wm8P3B45yshR._3axV0unm-cpsxoKWYwKh2x{fill:#ea0027} Whether you are laying the laminate below ground level or at ground level or above, you need to have the correct type and number of layers for the underlayment. If the number of plies/layers is more, the plywood sheets will be stronger and the production costs will be higher .The Number of Plies/Layers for plywood in each thickness are listed here. 1. CDX plywood (¾â€) in particular is used often because it has a high level of resistance to moisture and humidity. Level. The second method is to loose-lay one layer of 3/4 -inch plywood cut into 16-inch planks perpendicularly or diagonally to the direction of the flooring. .ehsOqYO6dxn_Pf9Dzwu37{margin-top:0;overflow:visible}._2pFdCpgBihIaYh9DSMWBIu{height:24px}._2pFdCpgBihIaYh9DSMWBIu.uMPgOFYlCc5uvpa2Lbteu{border-radius:2px}._2pFdCpgBihIaYh9DSMWBIu.uMPgOFYlCc5uvpa2Lbteu:focus,._2pFdCpgBihIaYh9DSMWBIu.uMPgOFYlCc5uvpa2Lbteu:hover{background-color:var(--newRedditTheme-navIconFaded10);outline:none}._38GxRFSqSC-Z2VLi5Xzkjy{color:var(--newCommunityTheme-actionIcon)}._2DO72U0b_6CUw3msKGrnnT{border-top:none;color:var(--newCommunityTheme-metaText);cursor:pointer;padding:8px 16px 8px 8px;text-transform:none}._2DO72U0b_6CUw3msKGrnnT:hover{background-color:#0079d3;border:none;color:var(--newCommunityTheme-body);fill:var(--newCommunityTheme-body)} And one of the more crucial layers is one that is almost never seenthe underlayment that is found just under the surface floor covering. There are different reasons why people decide installing new plywood, from replacing a bad sub-floor, to raising it to be higher & stronger. IF the two layer approach is ok, should they be the same thickness? Plywood consist of some veneer plies or layers . .LalRrQILNjt65y-p-QlWH{fill:var(--newRedditTheme-actionIcon);height:18px;width:18px}.LalRrQILNjt65y-p-QlWH rect{stroke:var(--newRedditTheme-metaText)}._3J2-xIxxxP9ISzeLWCOUVc{height:18px}.FyLpt0kIWG1bTDWZ8HIL1{margin-top:4px}._2ntJEAiwKXBGvxrJiqxx_2,._1SqBC7PQ5dMOdF0MhPIkA8{height:24px;vertical-align:middle;width:24px}._1SqBC7PQ5dMOdF0MhPIkA8{-ms-flex-align:center;align-items:center;display:-ms-inline-flexbox;display:inline-flex;-ms-flex-direction:row;flex-direction:row;-ms-flex-pack:center;justify-content:center} Plywood sheets are laid perpendicular to the subfloor, with no common joints and no adhesives between the layers. CDX plywoodTraditionally, exterior grade plywood has been the subfloor material of choice for many bathroom flooring projects. How To Add An Extra Layer of Plywood Over a Subfloor. Bob talks with carpenter Bob Ryley and general contractor Kevin Kalman, as they lay down the subflooring. Subfloor – the structurally sound layer, usually plywood. Installing thinner wood flooring over an already weak or thin subfloor may cause the whole floor system to flex up and down when walked on. /*# sourceMappingURL=https://www.redditstatic.com/desktop2x/chunkCSS/IdCard.8fe90067a922ef36d4b6.css.map*/For sound proofing? I think the green glue if applied correctly will give a good bond (should be better than liquid nails if you apply it like you should be for soundproofing). I am taking up carpet & particle board and putting a new layer of 1/2" plywood underlayment over the plywood subfloor prior to installing 3/4" hardwood (nailed down). Depending on finished flooring you could use a sound barrier subfloor, like an "acoustic mat" underneath your floor. Plywood is the most common type of subflooring. Thanks, I've researched this a lot - plenty of companies recommend using plywood as long as it is dampened by Green Glue. Therefore, adding an extra layer of flooring on top of your subfloor can help create the floor of your dreams! While plywood makes an admirable subfloor, it can be expensive, especially when installed in multiple layers, and so less expensive alternatives have been developed. As plywood and OSB wood products absorb moisture, their layers can separate or warp. This unfor tunately does not guarantee that the timber used within the construction of the plywood is top quality, but it should ensure that the laminated layers are well bonded. However, tongue & groove plywood subfloor has an advantage over regular square edge plywood. OSB commonly used in framing to sheath roofs, floors, and walls. Meanwhile, Advantech compacts the same thickness as the plywood to as many as 50 layers of beams forming one sheet, producing a more compact and weighted product throughout. Power drill with screwdriver bit. You’ll want the screw to go about an inch past the plywood into the joist or underlying layer beneath it. Otherwise I would go directly over the existing 1/2" subfloor with the flooring paper and oak floor. His solution is to remove 1-2 layers of the subfloor before putting down the vinyl. The subfloor is the bottom layer that rests on the joists. He's been doing this for 40 years, so I assumed that this was a common issue. Or if existing planks are in good condition- install hardwood floor on top of it, plywood is nor really needed, it will raise your floor too. Many people have seen plywood swell. Hi Jack, It depend on the particular floor leveling product you’re using, but most manufacturers recommend that you apply no more than 1/8” thick coat of self-leveling or floor patch compound at a time. .s5ap8yh1b4ZfwxvHizW3f{color:var(--newCommunityTheme-metaText);padding-top:5px}.s5ap8yh1b4ZfwxvHizW3f._19JhaP1slDQqu2XgT3vVS0{color:#ea0027} Using green joists. 1. in Home Improvement. Laminate Flooring on Two Layers of Plywood Subfloor? joists are currently covered with a 5/8" plywood subfloor. Circular saw. Use green glue between the wooden boards and 1/2 plywood (and possibly risk some remaining squeaks?) The second (top) layer of plywood joints should not coincide with the joists and the second layer should not be fastened to the joists. Plywood comes in a variety of thicknesses, beginning at 1/8 inch and increasing to 1 inch. “It is made for long-term durability.” This sentiment is backed by Georgia-Pacific’s lifetime warranty on the product. 7 Jan 2020 . According to Setting Tile (Page 81), I should provide blocking between the joists for plywood sheet ends. . Concrete is a more common subfloor in basements, and sometimes on the first floor of residential homes that don’t have basements (we’re looking at you, California). If you have a concrete slab floor, the slab may be considered the subfloor. MDF. This evolved plywood may claim an overall advantage over OSB, since plywood is a stiffer, longer-lasting subfloor option. one thicker than the other? lay tile on plywood? Fasten your first layer plywood subfloor as you normally should. Close. The 16" o.c. Plywood is made from glued thin strips of wood veneer (called plies) that are layered at alternating 90-degree angles and placed in a hot press; the resulting cross-laminated and layered material is structurally enhanced and resistant to the expansion and contraction that affects solid wood. Which is the better option, plywood vs. OSB? ._2a172ppKObqWfRHr8eWBKV{-ms-flex-negative:0;flex-shrink:0;margin-right:8px}._39-woRduNuowN7G4JTW4I8{border-top:1px solid var(--newCommunityTheme-widgetColors-lineColor);margin-top:12px;padding-top:12px}._3AOoBdXa2QKVKqIEmG7Vkb{font-size:12px;font-weight:400;line-height:16px;-ms-flex-align:center;align-items:center;background-color:var(--newCommunityTheme-body);border-radius:4px;display:-ms-flexbox;display:flex;-ms-flex-direction:row;flex-direction:row;margin-top:12px}.vzEDg-tM8ZDpEfJnbaJuU{color:var(--newCommunityTheme-button);fill:var(--newCommunityTheme-button);height:14px;width:14px}.r51dfG6q3N-4exmkjHQg_{font-size:10px;font-weight:700;letter-spacing:.5px;line-height:12px;text-transform:uppercase;display:-ms-flexbox;display:flex;-ms-flex-pack:justify;justify-content:space-between}._2ygXHcy_x6RG74BMk0UKkN{margin-left:8px}._2BnLYNBALzjH6p_ollJ-RF{display:-ms-flexbox;display:flex;margin-left:auto}._1-25VxiIsZFVU88qFh-T8p{padding:0}._3BmRwhm18nr4GmDhkoSgtb{color:var(--newCommunityTheme-bodyText);-ms-flex:0 0 auto;flex:0 0 auto;line-height:16px} Subfloor — A subfloor is selected for structural purposes and is the substrate (supporting layer) for the underlayment. Bob Vila, 11 Decorative Pillow Trends to Expect in 2021, 8 Easy and Affordable Garage Floor Options, The 7 Best Low-Cost Alternatives to Hardwood Flooring, 6 Ways You Can Get a Better Backyard in Just One Weekend, The Most Affordable Ways to Fence in a Yard. Although a home's floor is usually thought to be simply the surface layer of visible floor covering, a floor is actually a system of layered components, each of which is essential to the function and durability of the floor. While plywood makes an admirable subfloor, it can be expensive, especially when installed in multiple layers, and so less expensive alternatives have been developed. … Mobile home subfloor thickness may be of some concern, and installing plywood over this subfloor can give you a stronger base for your hardwood, laminate or carpeting. The other half are parallel with the joists, so provide very little strength. Plywood is made by gluing alternating layers of wood veneer. Bottom line is that even cheap, fast grown softwood T&G planks will give you a more solid subfloor than a really expensive plywood. DryPly is plywood treated with a water-resistant coating that prevents 40 percent of the absorption that occurs when uncoated plywood gets wet. Tongue-and-groove edges on many premium floor panels, such as Weyerhaeuser’s Edge Gold ® OSB panels, are designed to self-gap. Lay the first 8 by 4 plywood sheet, top side down, along the wall in one corner, so two sides of it are bordered by wall. A tile floor consists of three individual layers: the subfloor, the underlayment, and the surface tile you walk on. • Glue-down subfloor: 5/8 -inch plywood panels are glued in a staggered joint pattern directly to the slab. I'm sure soundproof plywood would be better, but cost prohibitive (not only more expensive per board but also would have to have 15-30 sheets (depending on whether I'm doing one or two layers) shipped to my house since the local stores don't carry them - don't want to imagine shipping costs for 900 - 2000 pounds of 4x8 plywood. Copyright © 2020 Acton Media Inc. All rights reserved. I'm adding layers to my second story floor - currently there's a single layer of plywood subfloor so I plan on adding two more layers of 3/4 inch plywood with green glue between each layer. Plywood sheets are laid perpendicular to the subfloor, with no common joints and no adhesives between the layers. Oriented strand board (OSB) is comprised of up to 50 layers of 3- to 6-inch inch wood strands oriented crosswise to each other, then glued under pressure. ._2cHgYGbfV9EZMSThqLt2tx{margin-bottom:16px;border-radius:4px}._3Q7WCNdCi77r0_CKPoDSFY{width:75%;height:24px}._2wgLWvNKnhoJX3DUVT_3F-,._3Q7WCNdCi77r0_CKPoDSFY{background:var(--newCommunityTheme-field);background-size:200%;margin-bottom:16px;border-radius:4px}._2wgLWvNKnhoJX3DUVT_3F-{width:100%;height:46px} There are many reasons for adding underlayment: ... Plywood is the most common type of subfloor. LP Building Products offers Top-Notch, an enhanced subflooring system with an edge coating to prevent water absorption and a self-draining notch design that drains standing water away from the panels (view on Lowe’s). But if an engineers decides that the subfloor is too thin for the OC of the floor joists, they ask for paint on glue long screws into joist and short screws to pull the two together. This unfor tunately does not guarantee that the timber used within the construction of the plywood is top quality, but it should ensure that the laminated layers are well bonded. However, many subfloors might not be the ideal surface on which to lay your finished floors. These problems are, more often than not, caused by water or water vapor. 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. “Wood and water just do not mix well,” says Jeff Key, marketing manager for wood products at Georgia-Pacific. It’s affordable, easy to work with, and durable. 16" (406 mm) o.c. However, many subfloors might not be the ideal surface on which to lay your finished floors. • Single-layer wood subfloors increase the potential for staining from the panel components, coated nails, construction adhesives, spills, overspray and show-through from texture and mechanical or water damage when resilient floors are installed directly to single-layer STURD-I-FLOOR. Example: http://www.supressproducts.com/products/plywood.htm. Also use hardy backer screws. Written by Stacy Randall. If the plywood subfloor you’re placing is 5/8 of an inch thick, you need a screw about 1 5/8 inches long. ._1EPynDYoibfs7nDggdH7Gq{margin-bottom:8px;position:relative}._1EPynDYoibfs7nDggdH7Gq._3-0c12FCnHoLz34dQVveax{max-height:63px;overflow:hidden}._1zPvgKHteTOub9dKkvrOl4{font-family:Noto Sans,Arial,sans-serif;font-size:14px;line-height:21px;font-weight:400;word-wrap:break-word}._1dp4_svQVkkuV143AIEKsf{-ms-flex-align:baseline;align-items:baseline;background-color:var(--newCommunityTheme-body);bottom:-2px;display:-ms-flexbox;display:flex;-ms-flex-flow:row nowrap;flex-flow:row nowrap;padding-left:2px;position:absolute;right:-8px}._5VBcBVybCfosCzMJlXzC3{font-family:Noto Sans,Arial,sans-serif;font-size:14px;font-weight:400;line-height:21px;color:var(--newCommunityTheme-bodyText)}._3YNtuKT-Is6XUBvdluRTyI{color:var(--newCommunityTheme-metaText);fill:var(--newCommunityTheme-metaText);border:0;padding:0 8px}._3YNtuKT-Is6XUBvdluRTyI:active,._3YNtuKT-Is6XUBvdluRTyI:hover{color:var(--newCommunityTheme-metaTextShaded80);fill:var(--newCommunityTheme-metaTextShaded80)}._3YNtuKT-Is6XUBvdluRTyI:disabled,._3YNtuKT-Is6XUBvdluRTyI[data-disabled],._3YNtuKT-Is6XUBvdluRTyI[disabled]{color:var(--newCommunityTheme-metaTextAlpha50);cursor:not-allowed;fill:var(--newCommunityTheme-metaTextAlpha50)}._2ZTVnRPqdyKo1dA7Q7i4EL{transition:all .1s linear 0s}.k51Bu_pyEfHQF6AAhaKfS{transition:none}._2qi_L6gKnhyJ0ZxPmwbDFK{transition:all .1s linear 0s;display:block;background-color:var(--newCommunityTheme-field);border-radius:4px;padding:8px;margin-bottom:12px;margin-top:8px;border:1px solid var(--newCommunityTheme-canvas);cursor:pointer}._2qi_L6gKnhyJ0ZxPmwbDFK:focus{outline:none}._2qi_L6gKnhyJ0ZxPmwbDFK:hover{border:1px solid var(--newCommunityTheme-button)}._2qi_L6gKnhyJ0ZxPmwbDFK._3GG6tRGPPJiejLqt2AZfh4{transition:none;border:1px solid var(--newCommunityTheme-button)}.IzSmZckfdQu5YP9qCsdWO{cursor:pointer;transition:all .1s linear 0s}.IzSmZckfdQu5YP9qCsdWO ._1EPynDYoibfs7nDggdH7Gq{border:1px solid transparent;border-radius:4px;transition:all .1s linear 0s}.IzSmZckfdQu5YP9qCsdWO:hover ._1EPynDYoibfs7nDggdH7Gq{border:1px solid var(--newCommunityTheme-button);padding:4px}._1YvJWALkJ8iKZxUU53TeNO{font-size:12px;font-weight:700;line-height:16px;color:var(--newCommunityTheme-button)}._3adDzm8E3q64yWtEcs5XU7{display:-ms-flexbox;display:flex}._3adDzm8E3q64yWtEcs5XU7 ._3jyKpErOrdUDMh0RFq5V6f{-ms-flex:100%;flex:100%}._3adDzm8E3q64yWtEcs5XU7 .dqhlvajEe-qyxij0jNsi0{color:var(--newCommunityTheme-button)}._3adDzm8E3q64yWtEcs5XU7 ._12nHw-MGuz_r1dQx5YPM2v,._3adDzm8E3q64yWtEcs5XU7 .dqhlvajEe-qyxij0jNsi0{font-size:12px;font-weight:700;line-height:16px;cursor:pointer;-ms-flex-item-align:end;align-self:flex-end;-webkit-user-select:none;-ms-user-select:none;user-select:none}._3adDzm8E3q64yWtEcs5XU7 ._12nHw-MGuz_r1dQx5YPM2v{color:var(--newCommunityTheme-button);margin-right:8px;color:var(--newCommunityTheme-errorText)}._3zTJ9t4vNwm1NrIaZ35NS6{font-family:Noto Sans,Arial,sans-serif;font-size:14px;line-height:21px;font-weight:400;word-wrap:break-word;width:100%;padding:0;border:none;background-color:transparent;resize:none;outline:none;cursor:pointer;color:var(--newRedditTheme-bodyText)}._2JIiUcAdp9rIhjEbIjcuQ-{resize:none;cursor:auto}._2I2LpaEhGCzQ9inJMwliNO{display:inline-block}._2I2LpaEhGCzQ9inJMwliNO,._42Nh7O6pFcqnA6OZd3bOK{margin-left:4px;vertical-align:middle}._42Nh7O6pFcqnA6OZd3bOK{fill:var(--newCommunityTheme-button);height:16px;width:16px;margin-bottom:2px} CDX plywood (¾â€) in particular is used often because it has a high level of resistance to moisture and humidity. The best grade is BB and the next best is CC, while OVL (overlay grade) is the minimum acceptable face grade. 3. To address these water issues, OSB and plywood manufacturers are refining their products. Huber even offers a 50-year warranty on AdvanTech. The fix is to use water-repellent or water-resistant products in place of ordinary plywood or OSB. ._3-SW6hQX6gXK9G4FM74obr{display:inline-block;vertical-align:text-bottom;width:16px;height:16px;font-size:16px;line-height:16px} Using green joists. 2. Two plywood layers would span 24 inches in most cases, but if you want to get by with one layer, spacing the joists at 16 inch centers will give you a better floor. One layer is laid, and the second layer is stapled or glued perpendicularly or diagonally over the top. The alternating layers make plywood a good strong sheet material for almost any project whether its furniture making or subfloor applications. I got an estimate from the local flooring company on Saturday and talked to him about how it could cause problems. You plan on driving on it or something? • Floating subfloor: There are two common methods for this. Thanks - I thought Green Glue actually doesn't function as a glue, though - they make a point of saying that it is not an adhesive. Engineered or Solid Wood Flooring that is less than 1/2" thick can be installed over a 2. Oriented strand board (OSB) is comprised of up to 50 layers of 3- to 6-inch inch wood strands oriented crosswise to each other, then glued under pressure. ._9ZuQyDXhFth1qKJF4KNm8{padding:12px 12px 40px}._2iNJX36LR2tMHx_unzEkVM,._1JmnMJclrTwTPpAip5U_Hm{font-size:16px;font-weight:500;line-height:20px;color:var(--newCommunityTheme-bodyText);margin-bottom:40px;padding-top:4px}._306gA2lxjCHX44ssikUp3O{margin-bottom:32px}._1Omf6afKRpv3RKNCWjIyJ4{font-size:18px;font-weight:500;line-height:22px;border-bottom:2px solid var(--newCommunityTheme-line);color:var(--newCommunityTheme-bodyText);margin-bottom:8px;padding-bottom:8px}._2Ss7VGMX-UPKt9NhFRtgTz{margin-bottom:24px}._3vWu4F9B4X4Yc-Gm86-FMP{border-bottom:1px solid var(--newCommunityTheme-line);margin-bottom:8px;padding-bottom:2px}._3vWu4F9B4X4Yc-Gm86-FMP:last-of-type{border-bottom-width:0}._2qAEe8HGjtHsuKsHqNCa9u{font-size:14px;font-weight:500;line-height:18px;color:var(--newCommunityTheme-bodyText);padding-bottom:8px;padding-top:8px}.c5RWd-O3CYE-XSLdTyjtI{padding:8px 0}._3whORKuQps-WQpSceAyHuF{font-size:12px;font-weight:400;line-height:16px;color:var(--newCommunityTheme-actionIcon);margin-bottom:8px}._1Qk-ka6_CJz1fU3OUfeznu{margin-bottom:8px}._3ds8Wk2l32hr3hLddQshhG{font-weight:500}._1h0r6vtgOzgWtu-GNBO6Yb,._3ds8Wk2l32hr3hLddQshhG{font-size:12px;line-height:16px;color:var(--newCommunityTheme-actionIcon)}._1h0r6vtgOzgWtu-GNBO6Yb{font-weight:400}.horIoLCod23xkzt7MmTpC{font-size:12px;font-weight:400;line-height:16px;color:#ea0027}._33Iw1wpNZ-uhC05tWsB9xi{margin-top:24px}._2M7LQbQxH40ingJ9h9RslL{font-size:12px;font-weight:400;line-height:16px;color:var(--newCommunityTheme-actionIcon);margin-bottom:8px} I plan to adhere, with thinset, another 5/8" or 3/4" layer of plywood along with a waterproofing membrane. Medium density fiberboard (MDF) is composed of small wood fibers compressed with glue. Standard plywood can be used for subfloors, but a better material is 3/4-inch tongue-and-groove plywood subflooring. The "X" indicates that the plywood can withstand some exposure. Box of 1-1/4-inch drywall screws. ._37coyt0h8ryIQubA7RHmUc{margin-top:12px;padding-top:12px}._2XJvPvYIEYtcS4ORsDXwa3{border-radius:100%;box-sizing:border-box;-ms-flex:none;flex:none;margin-right:8px}._2Vkdik1Q8k0lBEhhA_lRKE{height:54px;width:54px}.eGjjbHtkgFc-SYka3LM3M,._2Vkdik1Q8k0lBEhhA_lRKE{border-radius:100%;box-sizing:border-box;-ms-flex:none;flex:none;margin-right:8px;background-position:50%;background-repeat:no-repeat;background-size:100%}.eGjjbHtkgFc-SYka3LM3M{height:36px;width:36px}.j9k2MUR13FjoBBeLo1C1m{-ms-flex-align:center;align-items:center;display:-ms-flexbox;display:flex;margin-top:13px;margin-bottom:2px}._3Evl5aOozId3QVjs7iry2c{font-size:12px;font-weight:400;line-height:16px;margin-right:4px;margin-left:4px}._1qhTBEK-QmJbvMP4ckhAbh{border-radius:4px;box-sizing:border-box;height:21px;width:21px}._1qhTBEK-QmJbvMP4ckhAbh:nth-child(2),._1qhTBEK-QmJbvMP4ckhAbh:nth-child(3){margin-left:-9px}._3nzVPnRRnrls4DOXO_I0fn{margin:auto 0 auto auto;padding-top:10px;vertical-align:middle}._3nzVPnRRnrls4DOXO_I0fn ._1LAmcxBaaqShJsi8RNT-Vp i{color:unset}._2bWoGvMqVhMWwhp4Pgt4LP{margin:16px 0;font-size:12px;font-weight:400;line-height:16px}.tWeTbHFf02PguTEonwJD0{font-size:16px;margin-right:4px}._2AbGMsrZJPHrLm9e-oyW1E{width:180px;text-align:center}._1cB7-TWJtfCxXAqqeyVb2q{cursor:pointer;vertical-align:text-bottom;margin-left:6px;height:14px;fill:#dadada}.hpxKmfWP2ZiwdKaWpefMn{background-color:var(--newCommunityTheme-active);background-size:cover;background-image:var(--newCommunityTheme-banner-backgroundImage);background-position-y:center;background-position-x:center;background-repeat:no-repeat;border-radius:3px 3px 0 0;height:34px;margin:-12px -12px 10px}._20Kb6TX_CdnePoT8iEsls6{-ms-flex-align:center;align-items:center;display:-ms-flexbox;display:flex;margin-bottom:8px}._20Kb6TX_CdnePoT8iEsls6>*{display:inline-block;vertical-align:middle}.t9oUK2WY0d28lhLAh3N5q{margin-top:-23px}._2KqgQ5WzoQRJqjjoznu22o{display:inline-block;-ms-flex-negative:0;flex-shrink:0;position:relative}._2D7eYuDY6cYGtybECmsxvE{-ms-flex:1 1 auto;flex:1 1 auto;overflow:hidden;text-overflow:ellipsis}._2D7eYuDY6cYGtybECmsxvE:hover{text-decoration:underline}._19bCWnxeTjqzBElWZfIlJb{font-size:16px;font-weight:500;line-height:20px;display:inline-block}._2TC7AdkcuxFIFKRO_VWis8{margin-left:10px;margin-top:30px}._2TC7AdkcuxFIFKRO_VWis8._35WVFxUni5zeFkPk7O4iiB{margin-top:35px}._7kAMkb9SAVF8xJ3L53gcW{display:-ms-flexbox;display:flex;margin-bottom:8px}._7kAMkb9SAVF8xJ3L53gcW>*{-ms-flex:auto;flex:auto}._1LAmcxBaaqShJsi8RNT-Vp{padding:0 2px 0 4px;vertical-align:middle}._3_HlHJ56dAfStT19Jgl1bF,.nEdqRRzLEN43xauwtgTmj{padding-right:4px}._3_HlHJ56dAfStT19Jgl1bF{padding-left:16px}._2QZ7T4uAFMs_N83BZcN-Em{font-family:Noto Sans,Arial,sans-serif;font-size:14px;font-weight:400;line-height:18px;display:-ms-flexbox;display:flex;-ms-flex-flow:row nowrap;flex-flow:row nowrap}._19sQCxYe2NApNbYNX5P5-L{cursor:default;height:16px;margin-right:8px;width:16px}._3XFx6CfPlg-4Usgxm0gK8R{font-size:16px;font-weight:500;line-height:20px}._34InTQ51PAhJivuc_InKjJ{color:var(--newCommunityTheme-actionIcon)}._29_mu5qI8E1fq6Uq5koje8{font-size:12px;font-weight:500;line-height:16px;display:inline-block;word-break:break-word}._2BY2-wxSbNFYqAy98jWyTC{margin-top:10px}._3sGbDVmLJd_8OV8Kfl7dVv{font-family:Noto Sans,Arial,sans-serif;font-size:14px;font-weight:400;line-height:21px;margin-top:8px;word-wrap:break-word}._1qiHDKK74j6hUNxM0p9ZIp{margin-top:12px}.isNotInButtons2020 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how many layers of plywood for subfloor

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how many layers of plywood for subfloor 2020