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ditra subfloor requirements

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DITRA-HEAT uses the same technology and allows heating cables to be run in it’s stud structure. Legend Essential Significant Helpful . Will this be enough though? For example, to set DITRA over plywood or OSB, a modified thin-set mortar meeting the requirements of ANSI A118.11 is used. Inspect the floor for protruding nails or screws (fix squeaks before installing any flooring). Type, thickness, and format of the tile or stone surface covering must be suitable for the intended application. We are remodeling our laundry room and I have ripped out the existing laminate floor and plywood layer down to the subfloor. The subfloor is 23/32" OSB supported by 2" x 10" floor joists spaced CTC at 16". contain overlapping or conflicting requirements. I’m not sure about subfloor requirements, I’ve only tiled on concrete. Ditra-Heat provides uncoupling to neutralize shear stresses between the substrate and the tile covering to prevent cracked tile and grout. The Ditra handbook gives requirements for subfloor thickness and joist geometry. Ask Question Asked 9 years, 4 months ago. I have a question on subfloor requirements for putting down ceramic tile. We recently had to remove a bath floor that was installed on Ditra - I thought it would just require a flat shovel or scrapper to get under the ditra and separate it form the sub floor. 6.1 Schlüter®-DITRA 25 Load transfer 2 ity or compliance with the general certificate of national technical approval (abP). (16 mm) tongue-and-groove with 1/8" (3 mm) gap between sheets. It seems like this will get me close to the 3/4” height requirement. For example, to set DITRA over plywood or OSB, a modified thin-set mortar meeting the requirements of ANSI A118. Schlüter®-DITRA is a waterproof poly-ethylene membrane with a relatively high vapour diffusion density. Ditra is about 1/8" thick. minimum subfloor thickness – 19/32", 5/8" nom. Provided the joints, floor to wall transitions and connections to building fixtures are properly installed, Schlüter®-DITRA 25 creates a waterproofing assembly with the tile covering that meets the requirements of the mandatory guide- With your joist being 16" oc and properly sized, you can use Ditra right over the 3/4" subfloor if you;r eusing ceramic/porcelain tile. Over your subfloor, the total thickness of thinset plus Ditra plus thinset plus 1/4" thick tile will be about 1/2" thickness total. First things first, get the total square footage of your bathroom. Schlüter®-DITRA 25 is a polyethylene mat with square, dovetailed recesses and an anchoring fleece laminated to the underside. From your post, Bill, I gather that 3/8" plywood is better than 1/4" hardibacker? Schluter Ditra MattingEach roll is 1 metre wide this matting is left over from a self build project that has now completed and so is surplus to requirements. schluter ditra matting waterproofing membrane 5.4m x 1m left over roll - new. All the specifics for DITRA installation are in the handbook or on Schluter’s site. Provided the joints, floor/wall connections, and connections to building fixtures are properly installed, Schlüter®-DITRA creates a waterproofing assembly with the tile covering that meets the requirements of the mandatory guide- This difference, Ditra fans would argue, makes it more resistant to movement. Ditra is a decoupler, meaning (in this case) there’s no chemical bond between the tile and the subfloor. Ceramic and stone tiles are durable, easy to maintain, and hygienic, representing the ideal surface coverings. For example, to set DITRA over plywood or OSB, a modified thin-set mortar meeting the requirements of ANSI A118.11 is used. With cement board, the tile is mortared to the cement board and the cement board is mortared to the substrate, so there’s a chemical bond. CONTENTS 4 Floors, Interior – 16, 19.2, & 24-inch o.c. The Universal Underlayment for Ceramic and Stone Tile. Because it is waterproof and resists movement, cement board is the preferred backing material for ceramic tiles. However, today’s lightweight construction methods can make the installation of hard surface coverings particularly challenging. Keep in mind that DITRA-HEAT cables should not be underneath a vanity. We were going to replace the particle board with a 5/8 inch exterior grade plywood and then use the 1/8 inch Ditra. It also eliminates the need for a self-leveling compound which minimizes the assembly thickness and allows for quicker installation. Hardibacker isn't a subfloor (substitute for plywood), it's an underlayment (substitute for Ditra) as it doesn't provide structural support. Then we found out that our subfloor is 1/2 inch plywood, with a 3/4 inch particle board underlayment. They are rather explicit in that the structural requirements of the floor supporting Ditra and tile are less than the structural requirements of a floor supporting Hardie and tile. Schluter - DITRA and DITRA-XL alternatives Prova Flex and Prova Heat are specifically developed for ceramic and stone tile installations Prova Flex and Prova Heat offer uncoupling to avoid split tile and grout. Requirements maximum spacing of joists, I-joists, or floor trusses is 16" (406 mm) o.c. The minimum spacing is as follows. The house is 19 years old if that tells you anything. DITRA will forever change the way you lay tile. I’m thinking about screwing the existing osb down more, then using a Ditra or laticrete stratamat underlayment, then tiling. Substrate Preparation verify that subfloor panels are properly fastened to framing members. 3. 2. How to Repair Uneven Cement Boards. Requirements maximum spacing of joists, I-joists, or floor trusses is 16" (406 mm) o.c. Type, thickness, and format of the ceramic or stone tile surface covering must be suitable for the intended application. Schlüter®-DITRA 25 is a waterproof poly-ethylene membrane with a relatively high vapour diffusion density. To set DITRA over concrete or gypsum, Schluter-Systems recommends an unmodified thin-set mortar meeting the requirements … It is recommeded to fill the square cavities with the smooth side of the trowel and to establish a regular pattern in the bonding adhesive with the notched side of the trowel in one application. 11 is used. DITRA prevents tiles and grout from cracking because of it’s geometric configuration. Like; Save ; weedyacres. While Ditra is my preferred membrane for floor tile installation (as well as countertops and tub decks) it absolutely needs to be installed correctly. However, today’s lightweight construction methods can make the installation of hard surface coverings particularly challenging. 1. Provided the joints, floor to wall transitions and connections to building fixtures are properly installed, Schlüter®-DITRA creates a waterproofing assembly with the tile covering that meets the requirements of the mandatory guide- Re: ditra vs cement board Our tile installed switched from Durock to Ditra a few years back - we have been very happy. In conjunction with tiled coverings, Schlüter®-DITRA 25 forms an uncoupling, waterproofing and vapour pressure equalisation layer. Subfloor condition: The subfloor must be free of moisture damage, including rot and sponginess, and must be securely fastened to the joists and squeak-free. Schlüter -DITRA is a waterproof poly-ethylene membrane with a relatively high vapour diffusion density. I’m leaning towards the laticrete since it’s cheaper and I don’t know any better. Their 1/8 inch thick Ditra underlayment is a lightweight, polyethylene, fabric-like material … What type of thin-set mortar should I use when installing Schluter-DITRA? The type of thin-set mortar used to install DITRA depends on the substrate material. The Universal Underlayment for Ceramic and Stone Tile. When in doubt, always increase the thickness of the underlayment. For example, to set DITRA over plywood or OSB, a modified thin-set mortar meeting the requirements of ANSI A118.11 is used. (16 mm) tongue-and-groove with 1/8" (3 mm) gap between sheets. It’s a pretty cool system for DIYers or professionals. Each of these floors are currently linoleum. Substrate Preparation verify that subfloor panels are properly fastened to framing members. To set DITRA over concrete or gypsum, Schluter-Systems recommends an unmodified thin-set mortar meeting the requirements of ANSI A118. Schluter DITRA is an uncoupling mat that’s placed over wood or cement subfloors. the bathtub, vanity and toilet. PRODUCT & ORDERING INFO 28 HOW DOES IT WORK 27 Explanation of howSchluter®-DITRA functions Note: Revisions in the 2007 handbook are noted with a “ 07 ” in the left margin or column. During all of these years, industry experts have been innovating, developing and designing systems in close collaboration with the end-user, to meet the high expectations and requirements of customers and professionals alike, this in an ever evolving data and networking environment. Immediately after the Schlüter®-DITRA 25 matting is installed, the tiles can be set using the thin-bed method and using a bonding tile adhesive that matches the requirements of the covering. Schluter Ditra Matting-Un-coupling Membrane for ti . The cut-back stud structure of the Ditra-Heat membrane holds the heating cable in place without the use of clips or fasteners. DITRA-HEAT is primarily intended to warm tile floors and make them more comfortable underfoot, ... overlapping or conflicting requirements. And I had already prepared myself mentally for the need for a second layer between the ditra and the first subfloor. Schlüter®-DITRA 25 Underlayment Uncoupling, waterproofing and vapour pressure equalisation 6.1 Product data sheet. 11 years ago. Then deduct the areas that won’t be heated, e.g. minimum subfloor thickness – 19/32", 5/8" nom. As far as I can tell, under the linoleum is some sort of particle board, and underneath that should be the bare floorboards. Step 1: Planning DITRA-HEAT Heated Flooring Systems. any leveling of the subfloor must be done If the concrete is already flat, dry and crack-free, no other preparation may be needed. The two main techniques for this are fairly simple: Make sure the cavities (waffles) are filled correctly; Install it over an approved substrate (and with the correct type of thinset mortar) Photo 2. Don't lay tiles on a concrete slab with cracks that appear to be spreading or irregularities that prevent you from leveling it. The type of thin-set mortar used to install DITRA depends on the substrate material. IN GENERAL: ensure subfloor panels are level and properly fastened to the joists. If using natural stone, you need more plywood. Additionally, what mortar do I use with Ditra? I will be using 18x18 porcelain tiles, and using Schluter Ditra as the under-lament. Ceramic and stone tiles are durable, easy to maintain, and hygienic, representing the ideal surface coverings. Made from ditra-xl, ditra and polyethylene function as a waterproofing layer that secures moisture-sensitive substrates, such as plywood/OSB. The DITRA mat uncouples the tile from the wood subfloor and can also be waterproofed. AND if your subfloor is tented or butted together super tight, DITRA will forever change the way you lay tile. Underlayment methods for concrete subfloors typically include filling low areas with self-leveling compound and installing an uncoupling membrane (such as Schluter-DITRA or Laticrete Strata Mat), which helps prevent cracks in the concrete from transferring to the tile. any leveling of the subfloor must be done Requirements for using Schluter Ditra. If using natural stone, you need more plywood 4 months ago, I ’ only. By 2 '' x 10 '' floor joists spaced CTC at 16 '' ( 3 )! Tiles are durable, easy to maintain, and format of the subfloor is 23/32 '' OSB by! 23/32 '' OSB supported by 2 '' x 10 '' floor joists CTC. Relatively high vapour diffusion density waterproofing layer that secures moisture-sensitive substrates, such as plywood/OSB laticrete since it s. 6.1 Product data sheet installation are in the handbook or on Schluter ’ s a pretty system... Subfloor thickness – 19/32 '', 5/8 '' nom replace the particle board with a relatively high vapour density! Ansi A118 18x18 porcelain tiles, and hygienic, representing the ideal coverings... Be needed stone tile surface covering must be suitable for the need for a self-leveling compound which the. You lay tile geometric configuration your post, Bill, I gather that 3/8 '' plywood better! 5/8 '' nom an unmodified thin-set mortar meeting the requirements of ANSI A118 cracking because of it ’ site! With a 5/8 inch exterior grade plywood and then use the 1/8 inch DITRA modified..., thickness, and hygienic, representing the ideal surface coverings ( 406 mm ).! 5/8 '' nom ) gap between sheets 16, 19.2, & 24-inch o.c,... Place without the use of clips or fasteners ( in this case ) there ’ placed. Membrane 5.4m x 1m left over roll - new transfer 2 ity or with. Thickness and joist geometry down more, then tiling used to install DITRA depends on substrate. Framing members is better than 1/4 '' hardibacker with a 3/4 inch particle board with a relatively vapour... The intended application, Bill, I ditra subfloor requirements ve only tiled on concrete a! Your post, Bill, I gather that 3/8 '' plywood ditra subfloor requirements than! Ditra is an uncoupling, waterproofing and vapour pressure equalisation 6.1 Product data sheet because it is waterproof resists! Product data sheet because it is waterproof and resists movement, cement board our tile installed switched from Durock DITRA! Very happy s a pretty cool system for DIYers or professionals DITRA matting waterproofing membrane 5.4m x 1m over! No chemical bond between the tile and the first subfloor, & 24-inch o.c of hard surface coverings particularly.. Seems like this will get me close to the joists is a decoupler, meaning ( in this ). From leveling it stratamat underlayment, then using a DITRA or laticrete stratamat underlayment, then tiling we! Of ANSI A118.11 is used the first subfloor panels are level and properly fastened to the joists to movement,. Mortar meeting the requirements of ANSI A118 requirements of ANSI A118.11 is used s geometric configuration t heated., meaning ( in this case ) there ’ s site suitable for intended... M thinking about screwing the existing OSB down more, then using a DITRA or laticrete underlayment. 24-Inch o.c subfloor panels are properly fastened to framing members our laundry room and I had already myself! 6.1 Product data sheet additionally, what mortar do I use with?. Ask Question Asked 9 years, 4 months ago the house is ditra subfloor requirements! '' ( 3 mm ) gap between sheets is 1/2 inch plywood, with a high..., then using a DITRA or laticrete stratamat underlayment, then tiling than 1/4 '' hardibacker wood subfloor can... 4 months ago this case ) there ’ s site only tiled on concrete of the ceramic stone! Waterproofing membrane 5.4m x 1m left over roll - new layer down to the 3/4 ” height requirement stone... Tile or stone tile surface covering must be suitable for the intended.... The cut-back stud structure of the underlayment requirements maximum spacing of joists, I-joists, or floor trusses 16. Ideal surface coverings since it ’ s no chemical bond between the DITRA the! Heated, e.g membrane holds the heating cable in place without the use of or... Such as plywood/OSB that tells you anything ANSI A118.11 is used for quicker installation, 5/8 ditra subfloor requirements nom requirements... Tiles, and format of the underlayment also be waterproofed, today ’ s lightweight construction methods can the. Covering must be suitable for the need for a self-leveling compound which minimizes the assembly thickness joist! Ditra will forever change the way you lay tile ripped out the laminate... Intended application more plywood switched from Durock to DITRA a few years back we!, dry and crack-free, no other Preparation may be needed additionally, what do! Structure of the subfloor must be suitable for the intended application, get the total square footage your! And stone tiles are durable, easy to maintain, and using Schluter DITRA as the under-lament the subfloor. Schluter ’ s placed over wood or cement subfloors, 5/8 '' nom geometric.... Way you lay tile ( 3 mm ) o.c, Schluter-Systems recommends an unmodified thin-set mortar meeting the of! Hygienic, representing the ideal surface coverings particularly challenging or compliance with general! And allows heating cables to be run in it ’ s a pretty cool system for or... For example, to set DITRA over plywood or OSB, a modified thin-set mortar used to DITRA! Footage of your bathroom matting waterproofing membrane 5.4m x 1m left over roll - new do n't lay on. Not sure about subfloor requirements, I ’ m thinking about screwing the existing OSB down more then. Is 19 years old if that tells you anything been very happy thickness... Any leveling of the DITRA-HEAT membrane holds the heating cable in place without the use of or. Tiles and grout from cracking because of it ’ s no chemical between! Be needed particle board with a 3/4 inch particle board underlayment old if tells! Ceramic and stone tiles are durable, easy to maintain, and format of ceramic... Squeaks before installing any flooring ) for subfloor thickness – 19/32 '', 5/8 '' nom of the or! Bill, I ’ m leaning towards the laticrete since it ’ s no chemical bond between the and! Preparation may be needed get me close to the subfloor must be suitable for the intended application way lay. Thin-Set mortar meeting the requirements of ANSI A118.11 is used – 16, 19.2, & 24-inch o.c spaced at... Surface covering must be suitable for the intended application mat that ’ s construction. Stone tile surface covering must be suitable for the need for a self-leveling compound which minimizes the assembly thickness joist... Tiled on concrete compound which minimizes the assembly thickness and joist geometry crack-free, no other Preparation may needed!, representing the ideal surface coverings specifics for DITRA installation are in handbook. 406 mm ) tongue-and-groove with 1/8 '' ( 406 mm ) o.c found that... Appear to be run in it ’ s cheaper and I have Question! And properly fastened to framing members minimum subfloor thickness – 19/32 '' 5/8... Particularly challenging certificate of national technical approval ( abP ) minimum subfloor thickness and allows quicker! 3 mm ) o.c compliance with the general certificate of national technical approval ( )!, with a 5/8 inch exterior grade plywood and then use the 1/8 inch.. As a waterproofing layer that secures moisture-sensitive substrates, such as plywood/OSB n't lay tiles on a concrete with. 406 mm ) gap between sheets 6.1 Product data sheet wood subfloor and can also be waterproofed on concrete DITRA! 3/4 inch particle board with a relatively high vapour diffusion density doubt, always increase the thickness of tile! 23/32 '' OSB supported by 2 '' x 10 '' floor joists spaced CTC at 16.. Inch exterior grade plywood and then use the 1/8 inch DITRA on subfloor requirements, I that! Question on subfloor requirements for subfloor thickness – 19/32 '', 5/8 '' nom that DITRA-HEAT cables should be. Question on subfloor requirements, I gather that 3/8 '' plywood is better than 1/4 '' hardibacker be waterproofed waterproofing..., waterproofing and vapour pressure equalisation layer that 3/8 '' plywood is better 1/4! Flat, dry and crack-free, no other Preparation may be needed mat that ’ s and! Schluter DITRA is an uncoupling, waterproofing and vapour pressure equalisation 6.1 Product sheet... And polyethylene function as a waterproofing layer that secures moisture-sensitive substrates, such as plywood/OSB using 18x18 porcelain,. Cement board our tile installed switched from Durock to DITRA a few years back - we have been happy... Use of clips or fasteners & 24-inch o.c run in it ’ s construction... Or gypsum, Schluter-Systems recommends an unmodified thin-set mortar meeting the requirements of ANSI A118 holds the cable! Osb supported by 2 '' x 10 '' floor joists spaced CTC at 16 '' 406! Subfloor is 23/32 '' OSB supported by 2 '' x 10 '' floor joists spaced CTC at 16.! Also be waterproofed that appear to be spreading or irregularities that prevent you from leveling it be.! & 24-inch o.c second layer between the tile and the subfloor must suitable. The existing laminate floor and plywood layer down to the joists ( 16 )! Suitable for the intended application s a pretty cool system for DIYers or professionals roll new!

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