2. When the adhesive requires, add a moisture control system before applying the adhesive. It has qualities that benefit the installation of the finished flooring, such as a smooth surface. One process is to install a self-leveling concrete over plywood followed by an epoxy system. Snap the chalk line over the top of the concrete or moisture barrier between the marks on opposite walls making a cross in the center of the room. I'm fairly handy and have some much more handy people helping out, but any expert advice is much appreciated. A subfloor is part of the frame of the structure. But still not ideal. I didn't fasten it down at all. The subfloor separates a home's concrete slab from the finished flooring material: hardwood, laminate, carpet or tile. 3/4” engineered flooring also may be installed directly to screeds. Cracking and popping tiles are a sure sign that … It looks like a sheet of dimples or very large bubble wrap. If this something possible to do, how much OSB plywood can I shave off? Let me know what you think, hopefully I won’t have to replace OSB plywood. This only requires a few materials and will adhere the plywood very securely in place. It has qualities that benefit the installation of the finished flooring, such as a smooth surface. For best results, several areas of each room should be tested for excess moisture. Were you able to find it cheaper? An underlayment is a material that is sometimes installed over the subfloor and under the finished flooring. It is somewhat 'flexible' and heavy, so it just laid flat on its own. I did patch the seams with a cementious floor patch to even out any slight height difference between panels. A moisture control membrane is recommended any time a wood subfloor is installed over concrete. Plywood Substrate in a kitchen . Nail the 3/4-in. If you have an irregularly shaped room, divide it into smaller squares and rectangles, and calculate the square footage of each smaller area; then add them all together. Installation method: a. Subfloor Options For Basements. This also applies to joists depth. Get out the jack hammer and get rid of the concrete. On December 12, 2019 By Amik. Most subfloors over concrete use exterior grade ¾” plywood or OSB (Oriented Strand Board). Installing a floating subfloor over your cement floor can add warmth, homeliness, and character to your room. But the fact is, a properly installed plywood subfloor provides a suitable installation surface for most flooring materials, including luxury vinyl planks (LVP), which are thicker than traditional vinyl tiles and can smooth over slight imperfections better. Although I resent the implication that I know nothing, I'll check them out, and thanks. Any flaw in my plan? Manufacture recommends that I use 16 gauge or 18 gauge 1 3/4” - 2” cleats. ... Prep a Plywood Subfloor for Hardwood or Laminate Flooring. This finished tile floor is installed over a plywood and cement backer board subfloor. A new moist slab should be allowed to dry naturally or the process can be hastened with heat and ventilation. I'm about to be reno'ing my basement and i absolutely need to do something about the floor. A diamond metal lath was installed to reinforce the self-leveling concrete. Plywood subfloors can generally handle any type of flooring material since they are less porous than concrete slabs. How to Install Concrete Floors Over Plywood Sub-Floors. Then fasten 3/4-in. How to Install Natural Bamboo Flooring Over a Plywood Subfloor. Close. Is there a better way to do it rather than shaving it off? The foam liner acts as a vapor barrier and helps keep things stable. But, if you have low ceilings, you may feel a bit more closed in, and more importantly, you may have issues with your doors. Here's my issue: we've already done marble tile in the rest of the house, which divides the two areas of wood roughly in half. Again, leave 1/4-inch gaps between sheets of plywood to eliminate squeaks. Different methods may be necessary depending on the subfloor system and/or the flooring being installed. Build a Plywood Subfloor. Install it at right angles to the existing, with the seams staggered to stabilize the floor. For nail-down wood subfloors installed on-grade and below-grade, add a moisture control system below the subfloor material. All of the plywood panels should be placed with 1/8” gaps between abutting panels and a 3/4” minimum expansion space at all vertical obstructions and wall lines. Nail down solid hardwood flooring how to install vinyl plank over basement floor insulation contractor how to install laminate flooring over what are the best flooring options for . Check the slab under the plastic after 24-48 hours. Plywood underlayment is typically needed when a floor material must have a very smooth, flat surface. The wood uses a floating click-together installation, and will be installed over the concrete slab. Duraamen’s Param 5500 goes on thin, in a 3/8" to 1/2" thick application. How did you secure the boards to the slab? Common Subfloor Materials Plywood is the traditional subfloor material. How to Install a Cement Backer Board Over a Plywood Subfloor in the Bathroom. You can either roll on a liquid latex membrane or use a peel-and-stick crack prevention mat over the entire concrete subfloor. 5. Thank you very much in advance. Floating plywood system. Posted by 5 years ago. Because it raises the finished floor by an extra 1 1/2 inches -- and for other reasons -- the sleeper method has fallen into disuse. For floated wood subfloors installed on-grade and below-grade, be certain moisture control is taken into account. After installing platon and 2" of EPS, I am considering installing a regular 1/2" plywood for first course, then screwing, and possibly glueing, a 3/4 T/G course over it. It will also act as another moisture barrier below your floor and it should not break down. Metal lath stapled over plywood substrate. The cost associated with both options for installing wood over concrete is similar. are all suitable, but don't proceed with your tiling project if the subfloor is particleboard, chipboard, Masonite or sheet metal unless you can replace these flexible materials with plywood or oriented strandboard. How to install subfloor sleepers over slab in the basement and other rooms with a concrete floor. If you have a weak subfloor that flexes up and down when walked on I would recommended adding an additional layer of 3/8 or 1/2 inch thick plywood underlayment glued and screwed down over a 5/8" or 3/4" thick subfloor to add stability. Your email address will not be published. if not you might be able to get a bit thicker slab (2 1/2" or 3") at the same weight. Alternative wood-based structural panels are permitted if recognized in a current evaluation report from an approved testing source as satisfying the requirements for subflooring in the governing building code. We recommend applying Param 5500 at a minimum thickness of 3/8” (1/2" is … I was searching for such type of article and you have shared what I was looking for. If the subfloor is plywood or particle board, start by screwing down any loose boards or plywood sheets. Lay sections in a staggered joint pattern in the adhesive, with 1/8” spacing between sheets, and 3/4” minimum expansion space at walls and all vertical obstructions. Always follow the flooring manufacturer’s recommendations for adequate and recommended subfloor system requirements below their flooring. Lay the second layer so that no seams line up with the below layer. When leveling floors made of wood, you’ll need to sand down any high spots. Installation over screed systems includes properly spaced and oriented screeds laid perpendicular to the direction of the flooring and across two or more spans. I want to do this job myself. I have been researching a lot and would like to install a plywood floor over concrete in two bedrooms in our basement. 11 years ago. I would've thought backer board would wind up being more expensive, but that might be worth considering. Design Workshop: The Beauty of Humble Materials, Using White Marble: Hot Debate Over a Classic Beauty. Flatness tolerances should be to within 3/16” in 6’ or 1/4” in 10’ for nail down over the wood subfloor. It lays directly on top of the waterproof barrier, or combination of barrier and underlayment, to help cushion and insulate. Glue-Down In my customer's case, because we did two layers, it came to $1.00 a square foot, much less than a self-leveling underlayment would have cost for the same lift. It is made of thin veneers of wood that are glued and pressed together. The specifications above suggest two 1/2" layers of t/g plywood. Screeds (also known as sleepers) are strips of 2x material laid on-end in a pattern that allows for nailing the wood floor directly to them. Regular or treated plywood? Cut the plywood panels to … Do not use pressure treated plywood unless it has been kiln dried after treatment (KDAT), and moisture content coincides with the in-use environment of the facility in which the flooring is being installed. In the past, there were many obstacles to overcome to make this type of installation work. Don't glue the plywood to the concrete. Concrete is a common subfloor material, and in general, it’s easy to prepare for a luxury vinyl flooring installation project. Those OSB subfloors around 18 years old and in pretty good shape. For this material, cut sheets to 16” x 8’ or smaller panels, and kerf the back 3/8” deep a minimum of every 12” across the width. Once the plywood subfloor is secured, the next step is to install galvanized metal lathe to the plywood subfloor. I am getting ready to install a plywood subfloor on my basement slab that will ultimately have hardwood floor on it. good luck. Cracked and popping tiles could be a material issue. Stagger panel joints allowing approximately 1/8” expansion space around all panels to prevent edge peaking due to compression caused by panel swell. Required fields are marked *. Plywood or OSB (flakeboard) can expand and contract at too high a rate to be a stable foundation for tile. politicaux. Yesterday I was making sure that the floor is leveled but unfortunately there is a joist that goes through the room and it’s a little bit higher than the rest. Plywood Substrate Alternatives . In many situations, the installation method calls for an installation of a wood subfloor over a concrete subfloor. Installing plywood over the subfloor or using sleepers, which are two-by-fours laid flat across the floor and used as nailers. To prevent that movement from creating cracks in your grout and tile, install a crack prevention membrane after the concrete subfloor is clean, flat and free of cracks larger than 1/8-inch. My OSB plywood is ¾ inch or 19mm. Mostly this is due to lack of availability of 1/2" t/g plywood. Laminate Flooring, which can only be installed using the floating method, can be installed Consider both load bearing capacity and deflective properties when selecting subfloor materials. Panels should be mechanically fastened. For a concrete subfloor, you should install the plank with the sight lines of the floor. Lay 1/2-inch plywood sheets along the long axis of the room. recommended anytime solid ¾” wood flooring is installed over concrete. En savoir plus. To install a floated subfloor system, first place a layer of plywood subfloor panels with the edges parallel to the wall. You really should not use pressure treated lumber indoors, but a moisture barrier over it would retard migration of any hazardous chemicals into the house air. Place a second layer of 1/2-inch plywood at 45 degrees over the first layer. treated plywood to the concrete with concrete screws spaced every 16 in. If you want to install ceramic or stone tile on a floor, 3/4″ plywood over 16″ OC joists is recommended, even though the code may only demand 5/8″ OSB over 16 OC joists. The installation of calcium aluminate cement based self-leveling concrete, Param 5500 along with expanded metal lath for reinforcement is a successful fast-track method to convert a plywood subfloor into a beautiful concrete floor. To prevent that movement from creating cracks in your grout and tile, install a crack prevention membrane after the concrete subfloor is clean, flat and free of cracks larger than 1/8-inch. With the popularity of decorative concrete on the rise, many people considering remodeling, particularly in the northwest, feel like it isn’t an option for them simply because they have plywood sub-floors. It lays directly on top of the waterproof barrier, or combination of … Will it be possible to shave off around 3mm or 1/8 inch? Backerboard does not shrink or expand when it comes into … Sorry, your blog cannot share posts by email. He wants $24/sheet for 3 x 5 sheets in 23/32, which works out to about $1.60/sq ft. That's a little out of the budget I've got for this project. When installing a ceramic tile floor on a concrete subfloor, you don't have to worry about flexing as long as the concrete slab is at least 1 1/8-inch thick, which most slabs are. Work with the builder to get a low water ratio in the concrete mix, it's a little harder to work with but will result in less shrinkage. Click Lock Vinyl-Smooth, Semi-Gloss, Grey/Silver. More than likely you will get cracks in a slab that thin but there are some things you can do to try and reduce the occurrence. installing subfloor over un-level basement concrete floor? Would you recommend that I use 16 gauge or 18 gauge 1 3/4” - 2” cleats or even maybe staples for OSB plywood? home improvement. Is it ok to do one course of regular plywood or do both layers need to be t/g. If tests indicate too much moisture is in the slab, do not install hardwood floors. In this project Tom had to remove old tile and install another layer of 3/4" thick plywood. Cement backerboard is made for tiling. I had easily 3" difference between the two rooms. Most subfloors over concrete use exterior grade ¾” plywood or OSB (Oriented Strand Board). I have read in some places that you NEED a vapour barrier to put over the concrete before installing the plywood and in other places to just glue the plywood to the concrete floor. I've been told that Advantech is a good choice for subfloor material over concrete. An additional layer of 3/4” plywood should be installed, with screws, over the existing subfloor. For improved insulation. You're right though... all I know is what the guy who sold the flooring to me suggested, and I didn't trust a word coming out of his mouth. 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. After reading this I have a thorough knowledge and I have decided to install this. This joist is causing a hump across the floor and I am looking at what I can do to level it. Here's how to see if marble's right for you, Personnaliser mon expérience à l'aide de cookies, Houzz Tour: Plywood Pod Adds a New Dimension to Living Spaces, Try DIY Plywood Flooring for High Gloss, Low Cost, 10 Ways to Tap Into Plywood's Unfussy Appeal, The Power of Plywood All Around the House, My Houzz: Raw Aesthetics Rule in a Toronto Family Home. Installing A Subfloor Over Concrete Basement. As I have budget problem, I will do for one room and also save the money for installation. The first step is to secure the plywood to the floor with screws ensuring the plywood has a tight bond and will not move. Q: What is the best way to install a wood floor over a concrete slab?. Plastic for vapor barrier between plywood and slab? Underlayment covers subfloor flaws … Step 5: Secure Loose Boards Finally, repair any loose or squeaky boards by screwing the boards securely into the floor joists. 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At too high a rate to be reno'ing my basement and other rooms with a cementitious fast compound. Our basement Classic Beauty, start by screwing the boards securely into the floor with screws deformed. Spacing of these screeds an anti fracture membrane to the slab, do use. Systems includes properly spaced and Oriented screeds laid perpendicular to the slab install the plywood to the direction the! Specified as lightweight or high strength concrete use exterior grade ¾ ” wood flooring Association St.!