Q: What is the difference between modified and unmodified thinset, and in what situations should each be used?. Email Save Comment 22. I plan to use versabond on the floor tile. I am really confused as to whether the product he used is a mastic or modified thinset. Also, can the same thinset be used for floor tile in the same bathroom? He used thinset for the shower floor. Thinset is used for outdoor mosaics, or mosaics which may come into contact with water, such as in a shower. it seems you guys distrust & despise premixed thinset. Smooth and easy to spread premixed adhesive. For interior use only. After a shower has been framed and the cement backer board has been nailed to the framing timbers to create a wall, it is ready to be tiled. If you are installing a backsplash or wall tiles, a modified thinset is an excellent choice. Because thinset is not affected by moisture, it is best for floor tile and all tile in wet areas, including shower floors, walls, and ceilings and tub surrounds. Thinset mortar comes in varying types. … Never use mastic or premixed thin set… If it is being installed over ditra-mat (or comparable pvc underlayment), then use an unmodified thinset. Tile Mastic Sometimes called "organic" mastic or adhesive, tile mastic is a sticky tile adhesive that comes in premixed tubs. I noticed this morning that my contractor was planning to use premixed thinset to do my bathroom wall tile - BAD. Best thinset for porcelain wall tile. This page explains how to mix and use thinset mortar for detailed work with glass mosaic tile and other tesserae for outdoor and wet mosaics where PVA adhesives such as Weldbond should be avoided.. For large format tiles on walls … Thinset adheres to Sheetrock as well as any other surface, but you need to consider the purpose of the area when installing tile. - I am redoing my bathroom and I was wondering if it would be best to use thinset for the tiles inside the shower or will 12 years ago. The product used for the shower walls was Mapei Premium Mortar for Tile and Stone, wet and dry areas. Yesterday I applied the RedGard Waterproofing membrane over Durock Cement boards. Thanks, Craig. Premium Mortar is a premixed, no-mess alternative to traditional thin-set mortars that require water and mixing. But, please, please do NOT use a pre-mixed "thinset" sold at big box stores. Ceramic, porcelain and rock tiles add beauty and functionality to many areas of the home and give homeowners many design options. Thanks... Gary. When you are looking to set up shower tiles in your home, you need to consider a number of things one of which is of course the adhesive that you must use with these shower tiles. White thinset mortar is used with natural stone materials and glass tiles. People who have renovated their home will know the struggle behind getting rid of the thinset.Thinset is cement based adhesive material, which … The tile for the shower walls are 8″x20″ (vertical orientation) ceramic tile and one wall has a 9″ wide 1″x 2″ mosaic marble accent strip. Dark natural stones such as slate, bluestone, dark marble and granite can use any type of latex-modified thinset mortar adhesive during the installation of a shower. I have already tiled and grouted my shower walls using premixed thinset. If it "drys" it is mastic, if it "cures" it is thinset. I should have started with the wall tile and I should have used an unmixed thinset. Then I checked the instructions on the premixed stone, porcelain and ceramic tile thin-set mortar which I am going to use to put tiles and found that it says: "Do not use over waterproofing membrane." If you think it is easy to remove tiles or floorings and install the new tiles on the surface then you have never really done the task. Because thinset is not affected by moisture, it is best for floor tile and all tile in wet areas, including shower floors, walls, and ceilings and tub surrounds. I am ready to start tiling tub and shower surrounding walls. I used premixed thinset on my custom, preformed shower base and laid the floor tile. CBU wall to gypsum wall seam gets thinset (same as CBU-to-CBU) where it’s covered by the bullnose border tile. I assume that using some sort of modified thinset is the answer, but which brand? It works as a glue as well as a setting agent. Craig I wouldn't lose sleep over it. Substrate is 1/2" hardibacker and tile will be a standard white subway with grey grout. Buy online and get Free Shipping to any Home location! It is really mastic. Follow. From what I understand, Mastic is the premixed stuff in a tub and Thinset mortar is a powder prepared by just adding water, and that only Thinset should be used in the shower wall area. Thinset mortar lays a bed for placing tile. toadangel. Do I have to remove the tile or will this work on the walls. Thinset may not be the sexiest topic, but it’s an important one to study if you want to keep your customers happy and your reputation pristine. Mold and mildew-resistant. It is nonflammable and ready to use. While there are many types we sell, the one below is the only one I recommend for shower walls...  Thin-set mortars are typically sold in large bags or smaller containers depending on how much you will need. If the subfloor is wood, I would recommend putting down some cement board over the wood and use a lot of screws. There will be one CBU-to-gypsum wall joint at an outside corner which gets a corner bead and joint compound because half the joint is not covered by tile and it is in a relatively dry area. Suitable substrates: gypsum wallboard (dry walls only), cement board, exterior-grade plywood (interior only), concrete and masonry block. Can I use a premixed thin-set mortar to install Schluter-DITRA and tile? ok tileman, another point of confusion. No. I realize this was wrong on so many levels. It’s easier to shim off of the bottom when the tile sits on the shower … What thinset to use for shower wall tile. Then install the wall tile on top of it. Ceramic tiles measuring 12 by 24 inches can be installed on either floors or walls. To help strengthen thinset, Henry Rothberg invented a synthetic form of latex to be added to the thinset, thereby kickstarting the whole segment of modified thinsets. Use powdered modified thinset on shower and bath walls. Schluter-Systems does not recommend the use of premixed thin-set mortars (mastics/adhesives) in any DITRA … Mortars: We sell a ton of mortar in bags at my store, almost literally! JTG. Get the R&D 3.78L Premixed Thinset Mortar at your local Home Hardware store. It makes for a little more time on the shower pan but the wall tile will go easier. While a wide range of adhesives can be found on the market, the best adhesive to use on shower tile is going to depend on a number of factors. The GC said he did not want him to use a mastic product and the product he used was really a modified thinset. When used to tile walls it’s strength allows you to set tile, and if you’re good with eyeballing, you can set tile without the use of spacers. 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