I’ve never tiled over existing tile. 100% silicone products are not paintable. Curing silicone basically means letting it dry. :D. Getting raggdy from the condensate of the ice cubes when we fill it with bottle water and ice, but hate to throw it out. We still have the Kerdi box, it was built in 2001, no leaks. —doesn’t bond to thinset (wet or dry), right? Have a few others that did not last near as long. Remove the cover and cut your kerdi just around the outside of the holes for the screws or bolts. 4. How to Use Dermaclara Silicone Fusion™ Patches for Wrinkles Many people ask how they should use silicone patches. Using the flat side of the trowel, firmly press the banding into the mortar to ensure 100% coverage and to remove excess mortar and air pockets. It is suitable for creating tight seals at the transition between bonded waterproofing assemblies made with Schlüter-KERDI and other construction elements. Schluter Kerdi fix was recommended earlier in the thread. I am in the middle of shower remodel. At the time they didn't have KerdiFix out. The silicone dam is for the purposes of blocking water running down the wall behind the tile from getting into that opening. The material does not yellow over time and has high resistance to oxygen, ozone and UV light. The lowest portion of the floor is about 6″ further in than the drain, so in order for all the water to be out of the shower at the end of the day, one has to squeegee it toward the drain. The pipe must be dry before you apply the silicone; this allows the silicone to set up properly. I’ve used mapei’s aquadefense. ), Waterproofing fixture cutouts in shower tile. What to do now? They will not suggest its use for primary seaming or for areas that might be constantly wet. But here’s a picture of a baby hedgehog instead, just so you don’t feel jilted. The shower was never built quite right. Yes, you tape and mud that seam as well. The Kerdi bonded very well at the top where the cement board was primed and prevented it from sucking the moisture from the thinset. The surface should be painted before the silicone is applied. Pure, or 100%, silicone is the premium caulk for jobs exposed to water. So my question is similar to Steve’s above, but with one caveat. When water gets behind your tile (and water WILL get behind your tile!) I’m doing a kerdi sheet membrane shower, and plan on using a Hansgrohe mixing valve. Do I need to do anything with the vapor barrier that is being used for the outside of the house? Regarding a shower with Hardi substrate and Kerdi waterproofing—– Whether you have utilized a topical waterproofing like Hydroban or Redgard (liquid) or Kerdi (sheet), or you’re using the traditional method with a membrane behind your substrate, the answer is silicone. BUY NOW Rule #4. I am still a little confused about how to waterproof around the holes. Now all you need to do is shoot a large bead of silicone all the way around the perimeter of the hole. Floor is concrete. and for bonding to glass and plastic. Get off my ass about it. :topicoff: but since I finally found you Dave, if you were to caulk/seal an exposed joint ie:tub meets tile, corner... in a tub surround or shower, what exactly would you use, silicone or what exactly??????????? Dave has been watering it ever since. Amazing stuff, but expensive. Food grade silicone is a non-toxic type of silicone that doesn’t contain any chemical fillers or byproducts, making it safe for use with food. They just flat out don't leak. Leaky caulk is not to be ignored! Not sure why it costs so much (besides the Kerdi name). You can also get a ‘drain extender’, which raises the drain, then pack another mud deck over the existing tile, correctly sloped, and tile it. That would eliminate the need to remove the existing mess. You don’t need to do anything over it, the deck mud won’t bond to it anyway (which actually helps). Dave, so a urethane such as Sikafkex will skin over like a caulk and not collect dirt etc?????? If you have kerdi on your substrate and a silicone dam around the opening water is not going to get behind your substrate. 8.1 Schlüter®-KERDI W A T E R P R O O F M E M B R A N E F O R S U B S T R A T E P R O T E C T I O N Application and Function Schlüter®-KERDI is a crack bridging water- proof membrane made of soft polyethylene, It comes with its own seal, but it’s not kerdi, obviously. Either move the shower wall or build a bench over it. However, when it was the plumber’s turn, we realized that this meant that the mixing valve for the tub/shower was too deep, and it now sits proud of the shower wall. My question is what happens next? It's been full of water since 2001? JB even water tested one within city limits to fulfill a building code check list. Great, thanks for the info! ;). :eek: I can assure you I don't keep ice in it unless I have to :wave:, but it is always half full of water. Certified by NSF to NSF / ANSI Standard #51.Safe for incidental food contact. That and seeing the condensate on the plastic with our open wall cavities in the training areas when using liquids is what has made me a strong believer in sheet products and using felt. With that much work at that point it would actually likely be easier to replace the floor. I’m building a tile shower with Kerdi membrane, and the Schulter shower base kit (I read your manual on waterproofing with Kerdi – it’s excellent!). This creates the same waterproof dam on the backside of your substrate as well. Thanks for sharing all your knowledge with us. Brilliant! 21 CFR 177.2600. 2) I’m using Kerdi over Hardi. So the thought is to simply add a second drain where the first one SHOULD have been in the first place. The opening is 5″×8″, and at the base of the shower wall. The properties that make silicone suitable for these uses include its ability to create watertight seals. But wait, I just sealed the gap where the tile meets tub flange, also with silicon, so there is no way for the water to drain into the tub! It probably had that 5% or worse of D4. 100% silicone will perform better than “extended”. We are putting in a Wedi system shower and have already done the tiling, using a flexbond-type thinset and Bostick urethane grout. I did the caulking on my house 15 years ago including the cedar siding joints, still not a tear in it. It will not be technically waterproof until you install the silicone and tile. Silicone on the “plaster guard”…..enough? For those areas thin set or Kerdi-fix are recommended. ... Used it to cover the Schluter screws on the Kerdi board with Kerdi band per instructions. Movements in the first day this probably…two beers isn ’ t slam it up there without KerdiFix... 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