Durock also makes foam tile backer board panels, benches, and ramps. When we asked the plumber, he said he would not warrant the work any longer; his pan had been compromised. ft. 
According to Schluter, if you follow the application instructions you should be able to tile over Kerdi immediately after its installed, which is common for most sheet membranes. Or no? This is often the result of a crack in the concrete floor beneath the tile. Hi Steve, Their wall boards come in 1/2, 5/8, 3/4 and 2 thicknesses and have a reinforcement layer on each side to create more structurally stability. When i first came here to have a read i was already dead set on kirdy Ditra floor membrane and either the foam backer boards or the kirdy 200 wall membrane (not decided yet) for the walls. Thanks so much for your informative post. I think the first option would be best so the tray is fully waterproofed underneath, but.. will that cause the mortar rott problem you mentioned with mixing two systems (although i think you were just talking about putting a membrane on top of a tray, and im talking about continuing the ditra under it). Any types of tile to stay away from? I guess the only way to find out is to ask the engineers at Noble Company. I received different pieces of advice: (1) Replace the shower mixer, then apply clear waterproofing membrane over the tiles; and (2) remove and retile the entire shower, like what you suggested above. It can also be the fastest way to get the waterproofing job over with asap, if you pick the right product and the weather is not too cold or wet. One side of the alcove IS AN OUTSIDE WALL. membrane waterproofing shower tanking roll larger Then kurdy ditra up to it, leave a quarter inch expansion gap and fill that with kirdy fix? Why? Top subscription boxes right to your door, 1996-2022, Amazon.com, Inc. or its affiliates. Thank you (from people too long without a shower now). Make sure you cover the entire surface where you will be aplying yor liquid waterproofing. Sorry for the bad news but this would be even worse than the Fine Homebuilding suggestion in my opinion. I have gone over the various types of shower waterproofing membranes above. Sounds like a fun project and a great upgrade! Secondly, I cant seem to get my hands on a Wedi or Hydro-Blok shower base. Were skilled DIYers, but this is our first bathroom reno. I was advised to remove the floor tiles (still in good condition, except for two cracked tiles) and replace the waterproof membrane underneath. I always install a single layer of backer board about 1/8 away from the top of the tub mounting flange. In the RedGard application this water test would be just before tiling. Hopefully youre not as confused as the cartoon man in the picture, but wherever youre at in your investigation, I think youll find this post useful. Wedi or hydroban membrane on the floor first, then all the walls waterproofing mapei kit shower australia waterproof qld 
If you want a bit of a challenge and would like to save a bunch of money, you can always try installing a mortar shower pan instead of a foam one. I realize that you are a mason and not a tile setter, but as a business owner I believe they would grant you a trade account. Ive decided to use only a kurdi waterproof membrane. What a great article! Follow the manufacturers directions and make sure all the joints and corners are sealed with the proper membrane components. Just my opinion. However, I did notice that it is not recommended for installation in steam showers because it has a perm rating of < 1 perm". ProBase is unique among its competitors because it has a fleece covered membrane bonded to its surface. So if I were you, I would remove it and start over. I also prefer sheet waterproofing membranes over liquid. Now its time to give you a rundown of the brands within these categories. I saw the comment/response about prefab shower bases, that you didnt recommend a moisture barrier underneath. There is also a series of Kerdi Board prefab shower niches that are designed to be tiled. Yes, Kerdi or Wedi board would be a great idea for the ceiling. Bottom line is.. Its just a bit too unconventional for me to be qualified to advise you on this. Im looking at the Prova brand, wondering if you have any thoughts on their products? Regardless, these panels will likely need some mechanical attachment method to keep them in place while the adhesive dries.
Thanks very much for your help. But hubby noticed and we freaked out because putting holes in the liner, especially on the inside of the curb, we had been told by many folks is a total no-no. Is this something you would recommend? What is your advice for this situation? You dont want to take any chances. Because the Durock is slightly thicker than the mounting flange, your wall tile can be extended below the bottom of the board to the tub surface. Regarding your technique of taping & Redgarding your seams..Whether you extend your pan or not, I would suggest using a slightly different approach on the pan transitions because pan transitions are more vulnerable than wall seams. Do you know much about proflex products they seem to offer a product similar to this they are a company out of florida both a liquid and sheet product for waterproofing. You can see the technique Im suggesting in this Wedi sponsored video. Any advice? It can also be used as a crack isolation membrane up to 1/8 according to the specs. I have installed a schluter shower base but have Wedi walls. Your wall tile and shower floor tile is then attached to the membrane with a layer of thin-set mortar in the same way you would set any tile, using the appropriate sized notched trowel for your tile. We are using a mud man to install the tile. RedGard with Goof Proof Slope System and Kirb Perfect, RedGard with Goof Proof Slope System and Handi Curb. I would say that an acrylic/ fiberglass shower system does not require any additional waterproofing but a plastic shower kit could mean a lot of things. The exact technique Im suggesting is shown in this Wedi video. Firstly I have to admit that I have absolutely no experience with this type of installation. The reason why we are doing this remodel is because the shower was leaking into the exterior block walls. When a niche is mounted in an outside wall, this problem is compounded because the niche installation requires that some of the insulation be removed to make room for it. Once the pan is figured out, is it possible to use standard durock on the walls, adhere/seal the first sheet where it meets the pan, taping the seams, and finally 3 coats of red guard? Heres a product that may help you create your slope. I do not know the current state of the waterproofing membrane under the tiles at this point. We are remodeling (DIY we are moderately experienced) our master and putting in a large walk-in shower where the tub used to sit next to the current small normal square shower. Good luck with your shower remodel project! Im not really sure what product youre referring to but the USG Durock sheet waterproofing membrane that Im aware of is attached to the substrate with unmodified thin set mortar. I had originally planned on using tile but have decided to use corrugated metal as the siding for the bathroom due to weight, cost, logistical, and aesthetic considerations. This is a big concern for me since this could allow water vapor to enter the stud cavity. Even with a mortar imbedded waterproofing membrane laying over top of the bare foam base, it is still considerably vulnerable to impact damage. I think I will give er a try.
As I mentioned in my response to a previous comment, I do not recommend installing two different waterproofing membranes over each other. I managed to find a link to the Durock shower system installation video which shows the membrane install step: Thanks for your comment! Thanks for your comment. To seal the corners of the shower surround, these membrane systems use preformed / molded membrane pieces sold separately. If I were wanting to install a prefab shower base (Delta, Kohler) is there an underlayment that should be put below the shower base? waterproof partition walls, tub decks, etc, 1 grain of water vapor per hour, per square foot, per inch of mercury, shower bases, shower niches and building panels, Schluter now makes its own modified thin set mortars, install a shower niche in an outside shower wall, custom modify your own custom sized foam niche, https://pressedtinpanels.com/wp-content/uploads/2020/05/PTP-Bathroom-wet-area-installation-guide-2019-PRINT-05-2020.pdf, http://noblecompany.com/storage/docs/resources/STEAM_SHOWER-ROOM__NOBLESEAL_TS.pdf, well rated undertile waterproofing membrane, https://www.youtube.com/watch?v=G2dmFV1GfHo. Thanks so much for your kind words. You can create a seal between the membrane and your shower base by applying a silicon bead on the tiling flange and pressing the bottom of the membrane against it. This is a tough one and you will get many different opinions on this. The thing is..the traditional mud base was never intended to be covered with a sheet or liquid waterproofing membrane. If they are not available, I will choose to lay a mortar base instead. I think it would be very risky to keep it especially now that you have demoed the upper half of the shower. If I was you I would rip out and start anew! Were going to take advantage of the fact that we already have drain plumbing from the original shower to remake that space as a drip-dry area at the new shower entrance and use a teak shower floor mat there. I would recommend this product wholeheartedly, as long as your contractor is comfortable installing it. Although the unmodified should work according to Durock, I would have only used a modified mortar since the polymers would definitely help with adhesion (and Durock doesnt prohibit their usage). Class I: 0.1 perm or less (these are generally considered vapor barriers). Their trays come in interlocking sections to allow for some ability to customize the size of your shower base. Hydro Ban is also one of the more popular liquid membranes out there. Will also be tiling the floor. Your recently viewed items and featured recommendations, Select the department you want to search in. The bigger problem is that a undertile membrane will only work optimally if its installed without the pan liner and with a compatible membrane bonding drain assembly. Thank you! Hydro-Blok is another (slightly cheaper) manufacturer of cement coated pans but they have limited distribution in the US for some reason. bath tape shower seal sealant silicone waterproof roll adhesive 5m flexible Here is a good article describing the differences between the two systems in detail. As I mentioned, I have never performed this kind of test on the Durock membrane, so I was not aware of this strange performance. Your email address will not be published. I think your concern is justified. Almost all the sheet waterproofing brands sell valve and pipe seals (Durock, Mapei, Wedi etc. Ive read/seen that folks put something (like a tape, I forget what its called) along the tiling flange and then up and attach to the waterproof barrier on the walls (if that makes sense; to prevent any moisture that might get between the tiling flange and the tile from getting to unprotected walls/subfloor). Comment * document.getElementById("comment").setAttribute( "id", "a47c479dcece1f70dab0a808457ac56a" );document.getElementById("j1bf4a70f6").setAttribute( "id", "comment" ); Join our Mailing list for blog and product updates, Click the Ad link below to leave the Redblock site and continue to Amazon.com, Click the Ad link below to leave the Redblock site and continue to Amazon.comWeldbond Universal Adhesive, Schluter Kerdi Waterproofing Membrane Roll, Noble ValueSeal Waterproofing Membrane Roll, Redgard Waterproofing by CUSTOM BLDG PRODUCTS. So cutting it makes my head hurt. This was a grossly mistaken assumption, but fairly common during that period. After it dries it turns into an elastomeric (rubber like) layer which stays flexible. Awesome, useful information! This ensures that it is applied to the correct thickness.
Redgard Waterproofing Membrane by Custom Building Products: As I have already mentioned, Redgard is the most popular and the most talked about liquid waterproofing membrane out there. The back wall is an exterior wall, and the side wall is not. They sent an epoxy mixture to adhere the tiles to the shower base. Even with the proper pre-slope below the liner, much of the water adhered to the porous mortar base so it always stayed significantly hydrated. Could one use a liquid membrane over seams instead of tape? How would you recommend I install it and what products would you suggest? The introduction of a undertile membrane confuses matters significantly because it combines two incompatible systems (as I mentioned in my post). Because there is now only one waterproofing layer, this eliminates the vapor sandwich problem altogether. Your biggest problem will be water vapour management in the room in general. With a perm rating under .5, it can be used as a tile backer for steam showers installations according to the Tile Council of North America. It comes down to a judgement call by your local building inspector so it always helps to discuss your options with them so they recognize that you are trying to do it right and not trying to get away with something sketchy. If installed correctly, this membrane did exactly what it was supposed to do; keep water from getting into the subfloor and wall base framing. One question I had for you based on this article is that you mentioned that you would not use DensShield as is as your water proofing membrane layer on the wall. If so, what about seam sealing the durock? Installation strategy could also be an important consideration if there a lot of separate pieces where water could get through if poorly installed. I wish you the best of luck with it! They also make the most popular foam shower base available.