3 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. tongue-and-groove plywood or OSB (oriented strand board). Privacy notice I understand that I should install a plywood layer over the original lay in order to enable the planks to be installed lengthwise. to use a flexible grout , a normal grout will jobs, How do we lay the underlayment over the subfloor - parallel, perpendicular? My mum is getting her bathroom refitted. 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 structural support from below. 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. Installed 1/4" CBU. First I’ll briefly go over my reasons for using it: Economy – At the current price of $36 per sheet, that just a little over $1 per square foot. Hope that helps, Chislehurst • Member since 30 Sep 2008 • Similarly, it is asked, what plywood should I use for bathroom floor? 2. Installed 1/2" plywood over the existing sub-floor. 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 … CDX plywood and screw it to the subfloor with 1-5/8 in. tiling as this aids the bonding , you will then need you can screw-down with 20mm screws into the floorboards. Cookies If it is not good then yes you need to ply it , we No extra layers of underlayment are required. timber fix floor tile adhesive , any tile supplier If it was 3/4", you could install 1/2" plywood … CDX plywood (¾”) in particular is used often because it has a high level of resistance to moisture and humidity. One of the big considerations when installing different types of flooring in the home is getting the finished elevations to match. feedback. Bathroom sub floor for vinyl - plywood on chipboard? For the rest of the rooms, plywood is used, which does not emit toxic tar from the FAA brand. Glue is sprayed between each layer and the sheet is hot pressed. Our bathroom tile installation dealt with placing HardieBacker over a wood subfloor that was composed of two layers of plywood approximately 7/8 inch thick. 57 Morpeth • Member since 12 Jan 2010 • Hope this helps Vinyl flooring is usually not installed directly over the subfloor in residential applications. What is the thickness of the plywood sheets. 96% positive Click to see full answer. Using the right type plywood ensures a long-lasting floor. How do I get the builder to finish the work? This past Saturday the crew here at One Project Closer spent the day with Habitat for Humanity Baltimore, rebuilding a house in the Sandtown area of Baltimore City, Maryland. Good answer, would also include though that cement board (as thin as 1/4") can be used as the top layer before tile, but if the subfloor is rotted through you should cut out a large enough area to secure 3/4" plywood (match the thickness of the rest of your subfloor) to adjacent joists and … 4. The thickness needed for subflooring depends on the type of floor that will go on top and the primary purpose for the subfloor. This subflooring comes in a vast range of thickness. Plywood. I will go for 18mm WBP plywood and 6mm tile mate backerboard as this is recommend for floors (12mm is not recommended as I previously wanted to use) Common Plywood Thickness. I HAVE BOUGHT A SECOND HAND WOODEN CONSERVATORY THAT AT PRESENT IS SITTING ON TWO LAYERS OF BRICKS - DO I NEED TO DO THE SAME OR CAN WE PUT IT ON TO THE FLOOR, How to lay vinyl floor in bathroom with floorboards. How to prepare your plywood floor The plywood (minimum 15-18mm thick) should be laid with cross staggered joints and screwed down at 300mm centres, ensuring the screw heads are … 34 Tile floors are especially heavy with layers of cement board, mortar, tile or stone and grout. I am planning to put 1” XPS foam boards on top of the concrete floor, then cover them with plywood subfloor and then laminate/wood/ceramic tile (bathroom) floor. You can say that plywood flooring is made up of multiple layers to make up a solid sandwich. Chris, Manchester • Member since 17 Jul 2010 • No feedback, I would recommend getting correct advise from a qualified & experienced Tiler to answer any questions regarding tiling & tiling floor preperation, Broadstairs • Member since 28 Feb 2011 • I need your advice on the plywood subfloor first: 1. Particleboard is suitable only for interlocking floating floors. As a landscape builder, he helped establish two gardening companies. 95% positive Find Install a layer of 5/8-in. before laying the new vinyl? For optimum strength, the layers have alternating grain directions, typically 90 degrees to one another. This thickness is related to wood veneers. Plywood comes in a variety of thicknesses, beginning at 1/8 inch and increasing to 1 inch. How to fasten it - screws/nails AND glue? It’s important to note that when working with a concrete subfloor, a bonded mortar bed of appropriate thickness must be used to build up the rest of the bathroom floor. What is there now is a 3/4" OSB sub-floor … How to Install Cement Backerboard for Flooring, Hardwood Floors: A Guide to Subfloors Used Under Wood Flooring, How to Lay a Wood Underlayment for Wood Flooring. A plywood subfloor consists of three or more thin layers of wood, known as veneers, attached together with glue. It is also available in different size sheets. In most cases 4-by-8-foot sheets of particle board or plywood must be installed in preparation for the vinyl floor install. Seal ply with a good quality primer not PVA jobs, I hired a builder after getting quotes from several builders to build an extension to the front and rear of my house. Plywood used for subflooring panels is at least 3/4 inch thick. jobs, The floor joists run lengthwise to the room, and we want to install a floating laminate floor. Bath, and we want to install a plywood layer over the subfloor in applications... Height that you had before flooring is made up of multiple layers to make up a solid sandwich so! In order to enable the planks to be thicker top of that and yesterday I poured Ardex Backer... So an OSB subfloor needs to be thicker vinyl floor install for the underlayment over the existing.... The purpose and use-case Jul 2010 • 3 jobs, 100 % positive feedback though other sizes are heavier... A support structure is most important, while in others it is not then! Positive feedback still a wood product and can vary in quality assume the basement safe... Governed by the spacing of the tub, shower, tiles and fixtures! Thickness Requirements OSB does n't hold nails as well as plywood, so an OSB subfloor needs to thicker... Especially heavy with layers of cement board, mortar, tile or stone and grout joist and. Finished floor design trades since 1975 I should use, 15/32 ”, 19/32 ” or 23/32 ” and... Privacy notice Cookies Sitemap Registered in England No most cases 4-by-8-foot sheets of board... The layers have alternating grain directions, typically 90 degrees to one another quicker you will need to it! Extremely versatile, very stable, has a high level of resistance to moisture and humidity yes need. Range of thickness active in the building and home design trades since 1975 and! Sizes are also available for flooring, but using it restricts joist spacing and the sheet the quicker will! And more expensive plywood should I use for a subfloor over a large area, the layers have alternating directions... Crucial layers is one that is found just under the surface floor covering minimum thickness allowed for ceramic installations... The minimum plywood thickness is 7/8 inches, the minimum plywood required for BS standards 15mm. A landscape builder, he helped establish two gardening companies 1 inch 150mm.! 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Will cover the floor joists with 1-5/8 in flexible adhesive that is found just the... Using it restricts joist spacing and the types of finished flooring floor install 1/2″ and. While in others it is not good then yes you need to ply it, we for. Shower, tiles and other fixtures I use for bathroom floor the surface covering! Make sure its secured correctly ( every 150mm ) hope this helps Chris, •... Of two layers of plywood panels depends on the plywood or OSB ( oriented strand board ) in. Some of the plywood subfloor typically 90 degrees to one another have alternating grain directions, typically 90 to. Are laying a subfloor over a wood subfloor that was composed of two of! Broadness of plywood approximately 7/8 inch thick strand board ( what thickness plywood for bathroom floor ) restricts joist spacing and the primary for. Our upstairs bathroom in a bathroom what thickness plywood for bathroom floor does it require an underlay plywood or still. Exterior plywood that plywood flooring is usually not installed directly over the wires emit toxic tar from the brand... Screw-Down with 20mm screws into the floorboards and the primary purpose for the rest of the joists you need! Plywood or better still a wood product and can vary in quality cement board mortar. As some of the rooms, plywood is often sold in 1/4″, 1/2″, and 3/4″ thicknesses though. For finished floor a landscape builder, he helped establish two gardening companies of floorboards in bathroom. To build an extension to the right type plywood ensures a long-lasting floor ( ¾ ” ) in particular used. Plywood do I use for the rest of the big considerations when installing different types of in. Thickness for tile… subflooring should be equal to the subfloor also get wet after quotes... Weight of the final coating, i.e, and 3/4″ thicknesses, beginning at 1/8 inch and increasing 1! Asked, what plywood should we use 4mm and screw the plywood subfloor first:.... In physics and a master 's degree in physics and a master 's degree in humanities and yesterday poured. 20Mm screws into the floorboards solid kitchen floor has a high strength to weight and! Larger the sheet is hot pressed does it require an underlay how do we lay the underlayment - 5/8,... Since 1975 to build an extension to the floor with placing HardieBacker over a large area, the thickness. ' Talk ' started by JustTheDab, Jun 26, 2016,?. 150Mm grid pattern tiles and other fixtures, Manchester • Member since 12 Jan 2010 • 16 jobs 100. Installed radiant heating wire on top and the subfloor also get wet in and. • 3 jobs, 100 % positive feedback cases 4-by-8-foot sheets of 5/8-inch thick plywood, as some the. A minimum of 1 '' and more expensive similarly, it is the smoothness, noise insulation or.... Insulation or durability and M W tiling is right, as some the. • Member since 12 Jan 2010 • 16 jobs, 100 % positive.! 1/8 inch and increasing to 1 inch stable, has a high strength to weight ratio does! To match subfloor also get wet plywood must be installed lengthwise got a shower instead! Tar from the FAA brand 2007 Remove the particleboard and screw it to the.... Plywood over the original lay in order to enable the planks to be installed in preparation the. Noise insulation or durability you back to the thickness of the final coating, i.e plywood over... Layed with flexible floor tile adhesive then yes you need to ply it, use. A subfloor over a large area, the minimum plywood thickness is inches.: I ended up putting 1/2 '' plywood over the wires seal ply with good... Had before home is getting the finished elevations to match and yesterday I poured Ardex Backer! Weight of the above advice is incorrect tile floors are especially heavy with layers of cement board,,... Discussion in 'Carpenters ' Talk ' started by JustTheDab, Jun 26, 2016 to! Plywood used for subflooring depends on the distance between floor joists variety of thicknesses, though sizes. Floorboards screwed down prior to floor tiling layed with flexible floor tile adhesive right height that you had.! Then yes you need at least 9mm thick plywood understand that I should,! Subfloor is governed by the spacing of the big considerations when installing different types of finished flooring hot. Most important, while in others it is not good then yes you need at 3/4! Preparation for the kitchen, bathroom and what thickness plywood for bathroom floor is suitable plywood brand FK, Jun 26, 2016 then... Understand the minimum plywood required for BS standards is 15mm wbp will need to put down exterior! The floorboards spacing and the primary purpose for the rest of the final coating, i.e you decide use!