I am preparing to tile my kitchen floor and have it stripped down to the plank subfloor. You Save $9.38 with Mail-In Rebate ; ated to an insulating panel of high-density expanded polystyrene to let cement breathe. The subfloor is 3/4 tongue and groove plywood. Installed new tongue and groove and vinyl floor. Dricore Subfloor membrane panel 23. $75.90. This should be followed by a second layer of 15/32-inch-thick plywood installed with a 1/4-inch gap between sheets. I've been checking around, and the best advice I've received is to use 3/4 Advantech over the original floors, before laying new 3/4" hardwoods. Underlayment Mouseandcat, now that I took another look at your photos, you have a plank subfloor with that tongue and groove stuff on top. Substrate Preparation verify that subfloor panels are properly fastened to framing members. subfloors and underlayments - Armstrong Flooring The same physical principle applies to DITRA installations. Both have an actual thickness of 0.688”. 4. Measure the floor dimensions and cut your DITRA.You can cut DITRA with a utility knife. Structural plank subflooring Sufficiently load bearing structural plank subflooring in tongue and groove construction, with the appropriate screws in place, is suited in principle as a substrate for ceramic tiles. DITRA allows for ceramic tile application over single-layer plywood or OSB subfloors on joists spaced up to 19.2″ (488 mm) o.c. Just ditra over the subfloor. Desired finished floor is wood. The flooring has a noticeable bounce as you walk across it. 1.5' x 5' QuietWarmth 120V Peel and Stick Panel. I'm concerned about the stiffness. Most any plywood (even osb ) is an approved substrate for ditra. And  if you use a thinset approved for that substrate, there are no problems at all. Photos 3 and 4 had an unapproved substrate and, apparently, incorrect thinset (and a shitty tile job, but that’s a whole other post). It was nearly guaranteed to fail. We're planning to lay 12x24 in porcelain tile in our 10'x12' kitchen. Simply prime the floor in the same way then lay the mat over the tongue and groove floorboards with a flexible tile adhesive such as Dunlop Set Fast Plus and tile over the top. (16 mm) tongue-and-groove with 1/8" (3 mm) gap between sheets. Subfloor over tongue and groove subfloor Schluter Simply prime the floor in the same way then lay the mat over the tongue and groove floorboards with a flexible tile adhesive such as Dunlop Set Fast Plus and tile over the top. Under the ply is 1×4 tounge and groove. The entry door and front wall sit on the subfloor. Nail or screw subfloor (16 mm) tongue-and-groove with 1/8" (3 mm) gap between sheets. Schluter -DITRA Installation Handbook 2017 My main question here is about how to secure to the joists. Schluter Systems DITRA-XL Ceramic Tile Underlayment Tile underlayment with Tongue and groove subfloor. Movement Joints DITRA-HEAT and DITRA-HEAT-TB do not Here are the layers: 1. The rest of the floors are 3/4" oak as you can see in the pictures. These subfloors must meet structural requirements. Bouncy plank subfloor ceramic tile advice forums john bridge tiling over tongue and groove subfloor on installing plywood and backer board over existing subfloor bridging over two subfloor types for tile remodeling diy. Tiling Over Tongue And Groove Subfloor How To Remove A Tile Floor And Underlayment Concord Carpenter ... Jan Is Now On The Importance Of Using Ditra Or Bal Matting Tile Installation Problems How To Avoid The Worst Mistakes Tiling Onto Wood Weber Uk At my home improvement store I found 23/32” tongue and groove subfloor and 23/32” exterior-grade plywood sheathing. Support/Load Distribution When placed on a solid foundation, columns or pillars can support tremendous loads. We don't recommend or warranty DITRA or DITRA-XL installation over existing hardwood flooring as it is very unstable and difficult to bond to, making it a poor substrate for tile. Uncoupling systems help protect against the different rates of contraction and expansion experienced by floors which suffer from movement such as tongue and groove. The same physical principle applies to Schluter ®-DITRA installations. The planks run diagonal to the floor joists. I need to measure the beams and the spans, but the floor seems very stable. It has a limited lifetime warranty. or plywood subfloor Areas of Application over any even and structurally sound OSB or plywood subfloor with 16" (406 mm) o.c. My home is built with a 2"x6" tongue-and-groove subfloor. Saved to Favorites! Unfortunately this stuff would not stop expanding and dripping all over the door, floor, etc. Does Ditra add stiffness? The planks are 7" wide and 3/4" thick, tongue and groove with 1/4" gaps. But it is also more difficult to install because the … I am considering the following subfloor stackup: Existing Concrete Floor; Delta FL Vapor Barrier; 1" XPS; 5/8" Plywood (Tongue and Groove) The finish flooring will, most likely, be vinyl plank in the living areas and ditra/tile in the bathroom. A waste of money and labor. 1/4" Wedi building panel 4. x 2 ft. x 2 ft. DRIcore Subfloor Panel - Home Depot Bestow a manicured look to your floor by adding this DRIcore Subfloor Panel. Don't worry about the tongue and groove if it doesn't work for you, but make sure the joints have framing under them and still glue and screw the subfloor down. The water leaking down saturates the wood between the tongue and groove. The longest span is 15'. What is the best waterproof plywood? Prepare the subfloor: We installed this over a subfloor consisting of particle board over 1” tongue and groove. I plan on putting the 3/4" down that way in the morning (opposite the subfloor) that is unless you think I am wrong in doing it that way. Plywood has been a standard subfloor material since the 1950s and remains the preferred subflooring for many builders. This was the only floor. any leveling of the subfloor must be done prior to installing DITRA-HEAT and DITRA-HEAT-TB. Lift up a corner of the DITRA to check for thin-set coverage. I would suggest going over the details of that with your heating/plumbing contractor. He says it meets all the requirements for stiffness. Single-floor (FLOOR SPAN®) grade panels are used as a combination subfloor and underlayment and may be used directly under several different types of finish flooring as well as subflooring in a two-layer floor system with underlayment. * The first subfloor layer should be 3/4" (19 mm) thick plywood or OSB, either plain with all sheet edges blocked or tongue-and-groove, over bridged joists spaced a maximum of 24" (61 cm) o.c. My plan was to install 1/2" c grade or better plywood over existing subfloor, then ditra then tile. It’s essentially a tongue and groove subfloor with a minimal R value - foam on the bottom with groove to channel any potential moisture and OSB on top. These properties of plywood subfloor make it easier to install in tight spaces like closets or under the flooring of a deck with intelligent use of floor joist or tongue and groove. I think it’s certainly a possible solution. It's an uncoupling membrane so it help isolate the tile from the subfloor from any subsequent movement. Thus, DITRA effectively manages moisture beneath the tile covering. 5. Dry fit the DITRA on your wood subfloor. The reason is to make them structurally sound for a tile installation and this involves removing deflection. I’m ripping out my tile in the kitchen and I’m planning to retile it. any leveling of the subfloor must be done prior to installing DITRA-HEAT and DITRA-HEAT-TB. Standard plywood can be used for subfloors, but a better material is 3/4-inch tongue-and-groove plywood subflooring. Then use a powdered adhesive. Whats confusing me is the instructions on preparing the subfloor. With this kind of engineered hardwood or bamboo flooring, the proper underlayment is the same as that for floating laminate flooring—some kind of thin resilient pad made of foam. 9. Lift up a corner of the DITRA to check for thin-set coverage.Your goal should be 100% coverage…we had a few bare spots here and fixed tha... 1. Tile floors…there’s no doubt they make homes look nicer.But what’s not so awesome are broken tiles.This is a HUGE issue if yo... View Favorites. Using Ditra Xl over OSB subfloor planning on using natural stone tile. 30 Discussion on Schluter®-DITRA-HEAT installations over concrete subfloors ... 3/4" nom. (19 mm) tongue-and-groove with 1/8" (3 mm) gap between sheets Substrate Preparation verify that subfloor panels are properly fastened to framing members any leveling of the subfloor must be done prior to installing DITRA-XL Neutralizes stress between sub floor and tile surface, eliminating the main cause of cracking. After a rain the joints have swollen 1/4 to making high spots in the subfloor. I'm known for going a bit overboard but when I replaced the subfloor in my kitchen I used 3/4 tongue and groove osb with a thick bead of adhesive down each joist. See All See Less. I’ve used ditra and ditra heat. I have a 2x6 tongue groove subfloor over beams on posts in a 1950's ranch style home in northern California. I put down the 1/2" (that I took back up) in the opposite direction, so as to possibly strengthen the whole thing. Read on to find out more We are going to be installing cork floating flooring in the upstairs over subfloor (new construction). It is made of polyethylene creating a waterproofing layer protecting the substrate. It’s nailed into joists 16” OC. Regardless of whether the subfloor is single- or double-layer, Armstrong Flooring recommends the following: • If the top layer is tongue-and-groove and the strip wood is 3" or less in face width, cover with … You need more plywood for sure. Apply over OSB. When I use the term "subfloor", I'm talking about tongue & groove plywood or OSB or whatever, typically 3/4" thick, specifically engineered to be applied directly to the floor joists/underlying structure. Apply over OSB. This was the only floor. On top of that was laid 1/2 particleboard. If an effective damp subfloor dust free. I did something similar to our basement, but used a product called Dricore. maximum spacing of I-joists or floor trusses is 24" (610 mm) o.c. Ditra requires minimum 5/8″ tongue and groove plywood over 16″ on center spaced joists. Column-like mortar structures are formed in the cutback cavities of the matting. Low odour, low VOC. layer above. $69.99. Column-like mortar structures are formed in the cutback cavities of the matting. Asked by: PHTSUR \n\n \n The RedGard Uncoupling Mat Membrane would have to be set over Exterior Grade Plywood paneling or OSB. It is OK to go over vinyl flooring but if the vinyl flooring is over particle board underlayment I wouldn't do it. This will allow the wood subfloor to breathe. I don’t want to use another layer like OSB, plywood or backer board.\n \n \n \n \n . (19 mm) tongue-and-groove • minimum underlayment thickness – 11/32", 3/8" nom. Apply over concrete even concrete that has cured less than 28 days. nom. Installed over engineered floor trusses on 16” centers and it Is not water resistant as it claims. It does not sound like your tongue and groove flooring is a recommended subtrate to attach the DITRA-HEAT membrane based on the data sheet and detailed installation instructions.Hardiebacker, per instructions, needs to be attached to 5/8" exterior plywood.DITRA-HEAT can be attached directly to plywood or OSB so removing the T&G flooring and adding new … can I put 1/4″ cement board on the toune and groove? In front of my fireplace was a 2'x6' section of 8x8 tiles. Apply over single layer 5/8" plywood, with 16" on-center joist spacing, with tongue-and-groove plywood. Compare. Universal Body & Repair Inc For An Emergency Service Make a Call (904) 641-1201 (19 mm)tongue-and-groove • minimum underlayment thickness – 11/32″, 3/8″ nom. Neutralizes stress between sub floor and tile surface, eliminating the main cause of cracking. Strong and uniform consistency throughout. SunTouch heat mat Y: - it can crack with the movement in the ceiling. 6. Clean and dampen the wood subfloor.This creates a solid bond between the thin-set and DITRA. The home was built in the 1960s and the subfloor consists of 3/4" thick tongue and groove planks running diagonal to the joists. 1/2 subfloor doesn’t appear to be tongue and groove. (16 mm) tongue-and-groove with 1/8" (3 mm) gap between sheets. Apply over concrete even concrete that has cured less than 28 days. Apply a layer of six mil thick polyethylene plastic over the entire concrete slab to Build a grid work of 2-inch by 4-inch boards inside the perimeter boundary, with the... DRIcore 7/8 in. CDX is made of rough, lower-quality wood that is heavily treated for water resistance and is ideal for things like roof sheathing. Then I used GRK screws every 12 inches or so, then went between each screw with a framing nailer. Ditra simply gets unrolled and cut to fit with a utility knife. My block and beam 1940's house had original tongue and groove 3/4 " pinewood floors in the original rooms of the house. minimum subfloor thickness – 19/32", 5/8" nom. SKU 10042131. We're planning to lay 12x24 in porcelain tile in our 10'x12' kitchen. I went with Schluter over Hardi backer as there was no recommended installation method for hardi backer over tongue and groove boards that I could find. I have 3/4" OSB subfloor that I want to tile over. This will be the biggest diy job I've ever done. 7. What trowel should you use to apply thin-set to the wood subfloor?Check it out, we’ve got you covered 1/4″ x 3/16″ V-notched o... In the places where you need a membrane, put that on top of the OSB. Dricore Subfloor Membrane Panel 3 4 In X 2 Ft Oriented Strand Board Fg10006 The. Neutralizes stress between sub floor and tile surface, eliminating the main cause of cracking. Sub Floor Material Calculator. During the replacement, I attempted to reduce the moisture transference into the wood by installing some tar paper to act as a vapor barrier between the wood and the concrete slab. I popped these up and found they were adhered to 1/2 fiberboard. DIY: Plywood I-Beams | eHow (10 mm) Substrate preparation verify that subfloor panels are properly fastened to framing members. I know that for tile, 1-1/4” of flooring is required before the tile so I have enough. Ditra is an uncoupling membrane designed for ceramic and stone tile installations on floors. 2. nom. Double layer wood floor consisting of:• minimum subfloor thickness – 23/32″, 3/4″ nom. Most homes will consist of a standard subfloor constructed of running boards laid over floor joists, a plywood layer over the running boards, or if on a first floor, the subfloor can be a concrete slab. I believe this to be good advice, but is Advantech needed over regular plywood? Two 5-gallon buckets, one is new unopened, the other is about half used. minimum subfloor thickness – 23/32", 3/4" nom. It is 4'X12'sheets that run long ways with the joists. So I am starting to remove the old floor in my kitchen and after some work I finally got down to the subfloor. Click to add item 3/4 x 4 x 8 Sturd-I-Floor Tongue & Groove OSB Subfloor to your list. Notches should all run in the same direction. Here’s the basic rundown of how to use DITRA for ceramic or porcelain tile: thin-set, grout, and more. concrete and heated floors. BUT again, this tutorial is just for wood subfloors. All the specifics for DITRA installation are in the handbook or on Schluter’s site. IN GENERAL: ensure subfloor panels are level and properly fastened to the joists. 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. Installing ditra over an approved substrate is much, much easier. That should be a sufficient underlay for your Ditra, I would think—3/4" plank plus 3/4" T&G. Use your DMX 1-step and OSB over everything. It's your choice. He wants to use it without another underlayment. Use a rubber grout float to push the DITRA into the thin-set. Apply over OSB. My 1950’s home has 3/4″ diagonal 1x4s for the sub floor. Tongue-and-groove plywood is superior to regular plywood for floor decks because it creates a stronger, more rigid subfloor, and helps eliminate sagging and "bounce" at the seams between the joists. It turns out that the subfloor I have is 19/32 plywood which im not sure is enough to lay tile on. Spread thinset with a 1/4” notch trowel, lay your 1/4” thick cement board so that the seams do not line up with your wood subfloor panels, and then screw them down with galvanized cement board screws. Will this be sufficient or overkill? Secure the plywood on the subfloor using wood screws. Anyway, you're lucky that subfloor is only $40/sht.....last month it was $795/sht. I just finished laying down a subfloor in my basement. My block and beam 1940's house had original tongue and groove 3/4 " pinewood floors in the original rooms of the house. This polyethylene membrane is an excellent moisture and vapor barrier too, and it can be installed over wood or concrete including floors with radiant heat. I do not know if it was poorly constructed or if this naturally happened over time, but the tongues and grooves of the planks across much of the floor are no longer nesting within each other. The existing floor is a few layers of vinyl and louan over what we discovered looks like 3/4" unfinished hardwood floor with 9" wide 3/4" T+G subfloor running diagonally. Wood: Plywood, OSB, Shiplap, or tongue-in-groove. He cut and installed the Wedi boards around the sill, continuing it around the window edge, right up to the frame. The floor joists are 2x9, 16" on center. Here is what I did: over concrete slab (fully sealed with radonloc cement sealer) 2X4 pressure treated sleepers nail gunned into conrete at 24" o/c ( 3 1/2" side lying flat ) 1" styrofoam insulation dropped in between sleepers 19/32 tongue and groove plywood screwed to sleepers Car Decking Deflection And Sealing Ditra To Tub Wall Ceramic. Perhaps we're not speaking the same language here. Movement Joints DITRA-HEAT and DITRA-HEAT-DUO do not PB and OSB have an added advantage over plywood because it’s made from recycled materials. 24 inch on-center joist spacing with double layer OSB or plywood subfloors. (10 mm) Substrate preparation verify that subfloor panels are properly fastened to framing members. Sku # 1242867. $89.99. 30 Discussion on Schluter®-DITRA-HEAT installations over concrete subfloors ... 3/4" nom. The mastic seems to be holding fine and I rolled the whole install with a heavy tile roller. It also acts as vapor manager for any moisture that may come up from whatever is under the subfloor. To avoid damage to the surface, install underlayment immediately before laying the finish flooring. 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.. 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. I'm wondering what underlayment we need for the tile. Multidirectional Car Decking Subfloor General Hardwood Flooring. You should also make sure that you are leaving about … (10 mm) The tile sits on 1/4″ backer board which sits on 1/4″ ply. The strands are aligned in a specific orientation, sent through a press to bond at the molecular level, and cut to size. 3. If the subflooring is in good shape, nail it down without the plywood, assuming the engineered wood is of good quality and 1 ⁄ 2 -in. It provides uncoupling to prevent cracked tile and grout. If you’re going to do tile I would be sure you use 3/4″ tongue and groove plywood over the sleepers. Schlüter®-DITRA 25 neutralises the stress occurring in the tile covering and prevents the penetration of moisture. Car Decking Floor Fibergl Deck Board Wpc. Both were installed over 8” SYP joists supporting a 6” tongue and groove subfloor. Sealing piping penetrations in floors and ceilings is therefore an important part of plant operations. To create LP Legacy ® Premium Sub-Floor panels, logs are stranded and dried, then blended with waxes and resins. 3. Once your subfloor is good to go it’s time to install the DITRA.Mix up modified thin-set.Thin-set should be mixed to a fairly fluid consis... Substrate Preparation verify that subfloor panels are properly fastened to framing members. Apply over concrete even concrete that has cured less than 28 days. (19 mm) tongue-and-groove with 1/8" (3 mm) gap between sheets. A layer of modified thinset cement based mortar (using 1/4" notch trowel) 3. Waterproofs and allows moisture in the substrate to evaporate. The second subfloor layer (underlayment) should be 3/8" (10 mm) thick, plugged-faced exterior plywood or OSB. 3. It really wouldn’t be much different than installing the tubes on foam board under a concrete slab. C-36E Floor Primer useful for prepping floor for installing glue-down flooring over porous surfaces like concrete or wood sub-floor. Current tongue and groove 7/8" thick subfloor 2. minimum subfloor thickness – 19/32", 5/8" nom. So what are my options. The home was built in the 1960s and the subfloor consists of 3/4" thick tongue and groove planks running diagonal to the joists. These types of floors, assuming the planks are tongue and groove, need a layer of plywood over them and the plywood needs to be 1/2 inch minimum. Add To List. I was thinking of tearing out the subfloor and installing 3/4 advantech, (instead of having 1/4 ply over 40 year old 1/2 ply subfloor) but removing certain areas of the subfloor is going to be tricky since there is a baseboard heater installed. Since this happen 2 weeks before thanksgiving I did a half ass repair. Tongue and groove profile for easy installation. Waterproofs and allows moisture in the substrate to evaporate. I believe this to be good advice, but is Advantech needed over regular plywood? Underlayment & Backerboard (33) Refine by Installation Materials: Underlayment & Backerboard. The joists are 2x9 on 16" centers. These wood floors are installed by joining the planks with a modified tongue-and-groove system, and they often "float" over the subfloor instead of being nailed down. Embed the fleece side of the DITRA in the thin-set. So I think I'm ok on the L/360 requirements -- but I'll check the next time I'm down under. Eva Foam Boat Marine Yacht Car Deluxe Flooring Mat Faux Teak. 2. Know the joist spacing of your home before installing DITRA.Here’s the basic rundown of how to use DITRA for ceramic or porcelain tile:16... Grout is a form of concrete, and the gap between tiles can range from anywhere between one-sixteenth of … Leave a 1/4″ gap between walls and the bathtub. The standard subfloor for joists spaced up to 16 inches apart is 23/32-inch T & G sheets. 2 In X 6 12 Ft Select Tongue Groove Decking Board. I have several questions: Does this subfloor stackup look reasonable? 19.2 inch on-center joist spacing with single layer OSB or plywood subfloors. Here’s the basic rundown of how to use DITRA for ceramic or porcelain tile: 16 inch on-center joist spacing with single layer OSB or plywood subfloor. Ideal for a variety of applications including decks, play sets, landscaping, stair support and walkways and other outdoor projects where lumber is exposed to the elements. Now that the wood is acclimatized, you can install it. You cant use ditra over 1/2″ plywood. When other finish floor products are used, builders often install a separate underlayment grade of plywood over a subfloor of Rated Sheathing. APA Rated Sturd-I-Floor ® (also known as "Single Floor") is a combined subfloor-underlayment product designed specifically for single-layer floor construction beneath carpet and pad. Below the kitchen is … Tongue and groove over a waterproof plywood underlayment › GardenWeb Topics › Home Forums › Porches & Decks Mar 30, 2011 I am installing a tongue and groove deck on a craftsman style front porch. joist ... nom. \n Can I use this over tongue and groove subfloor? Should I trash the sheet install and start over or can I salvage this mess. Is installing 1/2" cementboard directly to the t&g plank subfloor an option or is it not recommended? Click to add item 3/4 x 4 x 8 Sturd-I-Floor Tongue & Groove OSB Subfloor to the compare list. Here are the supplies you need . Because it doesn’t adhere to the Ditra surface, the matting can move with expansion and contraction of the subfloor without transferring that movement to the tile and the grout and causing cracks. And an anchoring fleece laminated to its underside: The fleece backing adheres to a subfloor such as concrete or wood using thin-set mortar. Movement Joints DITRA-HEAT and DITRA-HEAT-TB do not Car Decking Houzz. Click to add item "Georgia-Pacific® DryMax® 3/4 x 4 x 8 Sturd-I-Floor Tongue & Groove OSB Subfloor" to the compare list. This includes Gorilla Glue Technology ® that provides unmatched strength and moisture resistance throughout the panel. Apply over single layer 5/8" plywood, with 16" on-center joist spacing, with tongue-and-groove plywood. 1/4” cement board is your basic, cheapest floor underlayment. Plywood has been a standard subfloor material since the 1950s and remains the preferred subflooring for many builders. This should be enough primer to cover 1800-2400 sq ft, depending on porosity of the subfloor. 1. Since the planks are only ½” thick, they need to be nailed to, at minimum, a 3/4” plywood/strand board subfloor. I've been checking around, and the best advice I've received is to use 3/4 Advantech over the original floors, before laying new 3/4" hardwoods. As I stated half ass and I’m not happy with my work. Click to add item Georgia-Pacific® DryMax® 3/4 x 4 x 8 Sturd-I-Floor Tongue & Groove OSB Subfloor to your list. In a bathroom and laundry room, we’ve already installed new 3/4″ tongue and groove plywood subfloor, glued and nailed, which will be tiled over (probably using a Ditra system). Substrate Preparation ... installation system for ceramic and stone tile over wood substrates. Add To List. Sku # 1242888. The existing floor is a few layers of vinyl and louan over what we discovered looks like 3/4 unfinished hardwood floor with 9 … A saw will cut it too, but produces silica dust particles â a razor blade is the better choice. any leveling of the subfloor must be done prior to installing DITRA-HEAT and DITRA-HEAT-DUO. Ditra can be installed over a variety of subfloors including concrete, plywood, OSB and radiant heated floors. Do not buy. A waterproof underlayment membrane like Ditra from Schluter Systems can be substituted for backer board. But there are a few important considerations to take into account when tiling over a wood subfloor. House was built in ‘47. 3. Waterproofs and allows moisture in the substrate to evaporate. We recommend removal of the finished hardwood flooring and then following the … Of course I would put cement board over planks. Apply the thin-set to the wood subfloor. So my house has 2x6 car decking/tongue and groove/whatever-you-want-to-call-it subfloor that I am going to tile over, both in the kitchen and the bathroom. Regardless of whether the subfloor is single- or double-layer, Armstrong Flooring recommends the following: • If the top layer is tongue-and-groove and the strip wood is 3" or less in face width, cover with … 8. Embed the fleece side of the DITRA in the thin-set.Leave a 1/4″ gap between walls and the bathtub. Use a rubber grout float to push the DI... Tongue-and-groove edges on many premium floor panels, such as Weyerhaeuser’s Edge Gold ® OSB panels, are designed to self-gap. Fill gaps as much as 1/4 inch in width with caulk. DITRA is an underlayment that allows for movement and expansion/contraction while preventing the transfer of stress that commonly cracks grout and tile. DELTA®-MS is a dimpled membrane that uses our exclusive Air-gap Technology to ensure your basements stay dry and last longer. (19 mm) tongue-and-groove • minimum underlayment thickness – 11/32", 3/8" nom. (16 mm) tongue-and-groove with 1/8" (3 mm) gap between sheets Substrate Preparation verify that subfloor panels are properly fastened to framing members any leveling of the subfloor must be done prior to installing DITRA and DITRA-XL Movement Joints DITRA and DITRA-XL do not eliminate the need for movement joints, including perimeter Any help is most appreciated. The subfloor is tongue and groove plank layed diagonally. Bedrooms have yet to receive new subfloor, and plywood is increasingly expensive. Standard plywood can be used for subfloors, but a better material is 3/4-inch tongue-and-groove plywood subflooring. The type of OSB used for subfloors generally is made with tongue-and-groove edges (T & G). Substrate Preparation verify that subfloor panels are properly fastened to framing members any leveling of the subfloor must be done prior to installing DITRA and DITRA-XL Movement Joints DITRA and DITRA-XL do not eliminate the need for movement joints, including perimeter joints, within the tiled surface. Item # 12218 Model # 637367. Wood – How to properly lay a tongue and groove plywood subfloor in a remodel Wood – How to properly install tongue and groove plywood subfloor Wood – When Laying Tongue and Groove plywood over 1×6 subfloor, do I lay it with the grain perpendicular to the floor joists or to the 1×6 boards underneath 08 DC Tacoma V6 SR5. I do not know if it was poorly constructed or if this naturally happened over time, but the tongues and grooves of the planks across much of the floor are no longer nesting within each other. Lay Down the Plywood. 2. These subfloors must meet structural requirements. The use of a plywood subfloor topped by cement backer board has made tiling much easier today than when I started my remodeling career. We used treated joists (but not treated sub flooring and cheap pine hardwood tongue and groove, I hate pine). It is install over 3/4 “ tongue and groove OSB with 2×10 joist 16” of doubled every other one. 315 People Used More Info ›› Visit site ... Issue 286 - Oct/Nov 2019 We will be installing engineered wood flooring over an old tongue-and-groove plank subfloor. Substrate Preparation verify that subfloor panels are properly fastened to framing members. The manufacturer requires 3/8″ spacing against all walls, doors, etc. If the board subfloor is in poor condition, use plywood as a clean, flat surface to glue down 1 ⁄ 2 -in.-thick engineered flooring. The area for this was cut out of the plywood underlayment, so the fiberboard was nailed directly into the plank subfloor. The Tile Council of North America (TCNA) calls for a subfloor of 19/32-inch tongue-and-groove plywood to be installed over wood joists spaced 16 inches on center, with a 1/8-inch gap between sheets. It has a tongue and grooved edge pattern for easy installation. The underlayment will be Ditra. You might consider switching over to 1/8 inch Ditra instead of cement board. Smooth surface; no core voids, knots or splits. Our question relates to where the cork floor reaches the top step of the stairway, and where it would meet stairnosing (we assume we would be using wood). Perhaps we're not speaking the same language here. Apply over single layer 5/8" plywood, with 16" on-center joist spacing, with tongue-and-groove plywood. The subfloor isn't tongue and groove. This 4 ft. x 8 ft. sheet of plywood is pressure treated for long life. thickness or more. Place these screws no more than 18 inches apart to keep it from warping. Tile underlayment with Tongue and groove subfloor. Had to tear out old plywood subfloor (water damage) and joists warped do to getting wet, left them in place. When I use the term "subfloor", I'm talking about tongue & groove plywood or OSB or whatever, typically 3/4" thick, specifically engineered to be applied directly to the floor joists/underlying structure. Using green joists. Plywood subfloor is more durable, thinner, and lighter than PB Subfloor. (house over 100years old) Crawl space not accessible. If you can pinpoint the squeaks, screw down the T&G into the planks (outside joists). minimum subfloor thickness – 23/32", 3/4" nom. 10. You can abut end and side sections of adjacent DITRA sheets. 23/32-in x 4-ft x 8-ft Tongue and Groove OSB Subfloor. Easy to use with paint roller. Schluter laid it out in their install manual. (16 mm) tongue-and-groove with 1/8" (3 mm) gap between sheets Substrate Preparation verify that subfloor panels are properly fastened to framing members any leveling of the subfloor must be done prior to installing DITRA and DITRA-XL Movement Joints DITRA and DITRA-XL do not eliminate the need for movement joints, including perimeter It seems to be in "OK" condition but I am little bit concerned of my plan. I was able to scrap the remaining 1/4” off the 1/2” subfloor. Uncoupling systems help protect against the different rates of contraction and expansion experienced by floors which suffer from movement such as tongue and groove. 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