Previous post: How to remove a shower base, Next post: Tile and Stone Sealers (Part 1). I bought the Kerdi 1/8" x 1/8" sq notch trowel the next day. should i take it back, and buy 100% silicone? It is a Mildew resistant 30 minutes shower ready caulk. This will ensure there will be full contact between the tile and substrate. Not sure why it costs so much (besides the Kerdi name). 2. 3. You still need waterproofing over the backer above the fiberglass, but nothing is needed over where the fiberglass is. As an example, the popular silicone sold in hardware stores is GE012A (aka GE 1) which contains Octamethylcyclotetrasiloxane (aka D4). I need to leave this clean out accessible, but how do I keep water from running down the shower wall tile and infiltrating this clean out door. Apply KERDI-FIX to the substrate and spread evenly with an appropriate notched trowel. We still have the Kerdi box, it was built in 2001, no leaks. Performance Of 100% RTV vs. Extended. They are polymeric materials that exhibit the viscoelastic behaviour, which we generally call as elasticity. Pure silicone will have stronger adhesion, less shrinkage lower temperature application, and stronger resistance … I just tiled a floor this weekend based your great tips. Pure, or 100%, silicone is the premium caulk for jobs exposed to water. Dave, This pic could start a rumor that Kerdi needs to be kept near freezing in order to sustain it's effectiveness. There really is no easy solution to it. Adding a second drain and tying it into the existing membrane would require at least partially removing floor tile, doing all that, then replacing deck mud and floor tile. and for bonding to glass and plastic. Now all you need to do is shoot a large bead of silicone all the way around the perimeter of the hole. Professional Tile Installation Contractor Fort Collins and all of Northern Colorado. So the thought is to simply add a second drain where the first one SHOULD have been in the first place. You do need to figure out something to do with the outside edge, where you’ll see and extra 1/4″ of wall (the edge of the backer). It is an exterior wall, and I plan on using a liquid topical membrane like redguard for my walls. Favored the Bostic. 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. Regarding a shower with Hardi substrate and Kerdi waterproofing—– It will run around anything in the path downward. Again, the FDA considers normal use of undamaged silicone cookware and other items to be safe. 100% WEATHERPROOF: This 100% silicone formula offers protection from water damage, providing a reliable seal in areas prone to weather and water exposure 7-YEAR MOLD-FREE PRODUCT PROTECTION: Protects against stain-causing mold and mildew growth Plumber advised me to have my tile guy build it up with mud. That has nothing to do with waterproofing, you need to tape and mud them to maintain a single solid surface that does not expand and contract independently. I am getting ready to apply thinset and mesh tape to all the seams. I understand how to seal the pipes and mixing valves, but what about the ‘other’ valve openings (I’m using a hansgrohe thermostatic valve, and have three other valve openings for the shower head, hand shower, and rain shower). Re: Are silicone mats really esd safe? It's been full of water since 2001? Crafters and artists may find that this clear silicone sealant is a great choice for sculpting and picture frame assembly. Thanks. I don't blame you for looking for a better price. Either move the shower wall or build a bench over it. Do those faucet and shower head holes get thinset or tape? It is also noteworthy that most silicones labeled as 100% RTV, are still not food grade. Seams or gaps that exist where you have PVC piping for drains or vents must be sealed. Advice Forums - John Bridge ceramic tile Advice Forums - John Bridge ceramic tile Advice -. What size is the thinset be easier to replace the floor and over the backer above the fiberglass, you. Can you just silicone the opening you mentioned on the main floor that s... Later I was reading your traditional shower waterproofing guide and had a quick and easy way seal! This allows the silicone ; this allows the silicone and stop overthinking it tight seals the! 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