Author Topic: Best caulk for sealing around the tub?  (Read 25300 times)

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Offline Rob Z

  • Posts: 850
Re: Best caulk for sealing around the tub?
« Reply #30 on: May 15, 2014, 03:30 PM »

Schluter Kerdi fix was recommended earlier in the thread.  I've used a lot of Kerdi fix for its intended purpose of sealing membranes and fixtures, and have never tried to caulk a tub surround  with it. I can't imagine that it would be toolable and it would likely just be a mucking fess if used as a caulk.



http://www.schluter.com/media/KERDI-FIX-ENG.pdf?v=201405101423

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Offline Brice Burrell

  • Posts: 7371
  • Remodeling Contractor
    • The Green and Dark Blue blog
Re: Best caulk for sealing around the tub?
« Reply #31 on: May 15, 2014, 06:07 PM »

Brice, 

what are you finding that is the equal, or similar to Kerdi and Kerdi components, for a difference as much as one-third the price of  the Kerdi product line?  I have used many of the products on the market and I can't think of anything that is similar in design and function to the Kerdi system of products for that much less cost.

Rob, I was referring to other Schluer products, not Kerdi components.  Like I said, I have zero interest in the Kerdi system so I never looked for a lesser priced system.

Check out my new blog, The Green and Dark Blue Blog.

Offline aptpupil

  • Posts: 65
Re: Best caulk for sealing around the tub?
« Reply #32 on: May 15, 2014, 06:30 PM »
The best is silicone caulk.
Make sure you are using silicone caulk, thourougly remove the old caulk and let the cleaned out area dry out. If the space between the tile and tub is large, you can put in a foam filler rod and then seal with caulk.
It sounds like what you have been putting on is silconized latex caulk which is not suitable for bathtubs.
You also may be having problems because your tub is flexing and cracking the seal because there is no support under the base. This usually happens with improperly installed fiberglass tubs.
Tim

This is the answer. 100% silicone, always. The fancier stuff cures more quickly or has mildewcide, but no matter what, make sure it says 100% silicone.

Offline Tim Raleigh

  • Posts: 3560
    • Oakville Cabinetry
Re: Best caulk for sealing around the tub?
« Reply #33 on: May 15, 2014, 10:22 PM »
I'm just a DIYer with a few bathrooms under my belt, but I was recommended Laticrete Latasil by many tile pros.  I've been using it for a few years now and really like it.

Good stuff.

Offline Gotoh

  • Posts: 34
Re: Best caulk for sealing around the tub?
« Reply #34 on: May 16, 2014, 12:21 AM »
Not sure what silicone you get but in my experience it sticks to anything. Getting it off when dry is a nightmare

It sticks to acrylic pans for about a week, then it starts peeling up. Not so much that you notice it visibly, but there will be a gap or two that wicks water through to the other side via capillary action discoverable via dental tools and/or food coloring. Maybe you see the leakage, or maybe you just see the damage it's silently caused 10 years later. And if you tear up even a tiny little bit, you're replacing it all, which means days of heck removing every last molecule of it from the surface because it won't even stick to itself. Luckily, it's really hard to damage via normal scrubbing so that never happens... Right? 

Latasil's great for natural stone and comes in lots of colors. Good for change-of-plane joints in tile that you don't want to stand out from the grout, but it's no better than the mass market junk on plastics or metals. If silicone was actually any good at sealing disparate materials then no one would use butyl when they actually need something to stay sealed on a boat or commercial window installation. 

Lexel sticks to wet surfaces, takes paint, stretches to an absolutely ridiculous extreme before tearing, is easily repaired in the event of damage and doesn't discolor at all. Lexel's also $9 a tube, so it's cheap enough to test for yourself. Join two tiles together with it and join two more with silicone. Let them both cure for two days and then try to pull them all apart. It's a pain in the ass to work with and I can't even get it here legally, but I'm never buying anything else, personally.

Offline mastercabman

  • Posts: 1854
  • NORFOLK,VA
Re: Best caulk for sealing around the tub?
« Reply #35 on: May 16, 2014, 06:59 AM »
Silicone is an absolute nightmare and never really bonds to anything but glass particularly well. Lexel white holds up much, much, much better, never yellows, can be easily spot repaired without complete removal and it bonds to acrylic to boot.

http://www.sashco.com/products/lexel/

Working with it is not fun and takes some practice, but it was the only thing that stopped my second-story round frameless enclosure from leaking through the floor after five months of failed attempts by contractors slinging everything Home Depot sold in a 10oz tube. There's still some of the original silicone around the drain that is permanently brown and dingy looking while the Lexel is still whiter than the tile and I have never scrubbed it once.

Now if only my state would actually allow anyone to sell it here... [mad]
Does it come in white?
If not why would you put clear caulk when there is a large gap?
I use 100% silicon (white or clear)Not from HD or LOWES
I don't understand!?! I keep cutting it,and it's still too short!

Offline RKA

  • Posts: 1803
Re: Best caulk for sealing around the tub?
« Reply #36 on: May 16, 2014, 07:34 AM »
Yes, it comes in white and clear (not sure about other colors).
-Raj

Offline Rob Z

  • Posts: 850
Re: Best caulk for sealing around the tub?
« Reply #37 on: May 16, 2014, 08:59 AM »

We are getting different results with Latisil.  With proper prep and application, we get great performance from Latisil  on all the surfaces normally found in kitchen and bath installations.  We have used several hundred tubes on hundreds of installations since Latisil was first available here (I think it was 2002).  The only problems we've had were on a handful of jobs where the cleaning people destroyed the silicone with caustic commercial cleaners.  On only one installation could I not figure out the cause for the Latisil's lack of a bond. On that one, we used the Latisil primer afterwards and had no more problems.

http://www.laticrete.com/Portals/0/datasheets/lds62001.pdf





Not sure what silicone you get but in my experience it sticks to anything. Getting it off when dry is a nightmare

It sticks to acrylic pans for about a week, then it starts peeling up. Not so much that you notice it visibly, but there will be a gap or two that wicks water through to the other side via capillary action discoverable via dental tools and/or food coloring. Maybe you see the leakage, or maybe you just see the damage it's silently caused 10 years later. And if you tear up even a tiny little bit, you're replacing it all, which means days of heck removing every last molecule of it from the surface because it won't even stick to itself. Luckily, it's really hard to damage via normal scrubbing so that never happens... Right? 

Latasil's great for natural stone and comes in lots of colors. Good for change-of-plane joints in tile that you don't want to stand out from the grout, but it's no better than the mass market junk on plastics or metals. If silicone was actually any good at sealing disparate materials then no one would use butyl when they actually need something to stay sealed on a boat or commercial window installation. 

Lexel sticks to wet surfaces, takes paint, stretches to an absolutely ridiculous extreme before tearing, is easily repaired in the event of damage and doesn't discolor at all. Lexel's also $9 a tube, so it's cheap enough to test for yourself. Join two tiles together with it and join two more with silicone. Let them both cure for two days and then try to pull them all apart. It's a pain in the  to work with and I can't even get it here legally, but I'm never buying anything else, personally.

Offline Rob Z

  • Posts: 850
Re: Best caulk for sealing around the tub?
« Reply #38 on: May 16, 2014, 09:09 AM »
Brice, now that I re-read what you wrote, I see you were referring to Schluter products other than the  Kerdi line.  You said there are other products out there that are a lot less expensive than Schluter products.  I've used nearly everything that Schluter makes, and if you have some knowledge of competitors' products that are that much less I would like to know so I can consider putting them to use on the job.








Brice, 

what are you finding that is the equal, or similar to Kerdi and Kerdi components, for a difference as much as one-third the price of  the Kerdi product line?  I have used many of the products on the market and I can't think of anything that is similar in design and function to the Kerdi system of products for that much less cost.

Rob, I was referring to other Schluer products, not Kerdi components.  Like I said, I have zero interest in the Kerdi system so I never looked for a lesser priced system.



Offline Kodi Crescent

  • Posts: 786
Re: Best caulk for sealing around the tub?
« Reply #39 on: May 16, 2014, 07:47 PM »
I'm still puzzled by the $16k annual property tax...

Offline Bob Marino

  • Posts: 3212
Re: Best caulk for sealing around the tub?
« Reply #40 on: May 19, 2014, 12:27 PM »
I'm still puzzled by the $16k annual property tax...

 Kodi,

 Don't be - just check out Glen Ridge/Montclair. That's why when the kids graduate high school, there are many for sale signs popping up.

Bob
Former Festool  Dealer since 2002; user well before that!

Offline Bob Marino

  • Posts: 3212
Re: Best caulk for sealing around the tub?
« Reply #41 on: May 19, 2014, 12:34 PM »
 
 Well, it seems I had used   GE 100 silicone when I last caulked. It's cracked and has gotten a bit moldy in spots, BUT, I think it's more user error (mine) in not taking the needed pre steps.

 I did not properly remove all the old caulking, nor use a backer rod in the wider joints, nor pre clean with mineral spirits and bleach. Things done improperly and/or in haste seldom turn out  well. I'm going to do all of the previously listed items before caulking and hope that the silicone holds well.

Bob
Former Festool  Dealer since 2002; user well before that!

Offline aptpupil

  • Posts: 65
Re: Best caulk for sealing around the tub?
« Reply #42 on: May 27, 2014, 11:06 AM »
Not sure what silicone you get but in my experience it sticks to anything. Getting it off when dry is a nightmare

It sticks to acrylic pans for about a week, then it starts peeling up. Not so much that you notice it visibly, but there will be a gap or two that wicks water through to the other side via capillary action discoverable via dental tools and/or food coloring. Maybe you see the leakage, or maybe you just see the damage it's silently caused 10 years later. And if you tear up even a tiny little bit, you're replacing it all, which means days of heck removing every last molecule of it from the surface because it won't even stick to itself. Luckily, it's really hard to damage via normal scrubbing so that never happens... Right? 

Latasil's great for natural stone and comes in lots of colors. Good for change-of-plane joints in tile that you don't want to stand out from the grout, but it's no better than the mass market junk on plastics or metals. If silicone was actually any good at sealing disparate materials then no one would use butyl when they actually need something to stay sealed on a boat or commercial window installation. 

Lexel sticks to wet surfaces, takes paint, stretches to an absolutely ridiculous extreme before tearing, is easily repaired in the event of damage and doesn't discolor at all. Lexel's also $9 a tube, so it's cheap enough to test for yourself. Join two tiles together with it and join two more with silicone. Let them both cure for two days and then try to pull them all apart. It's a pain in the  to work with and I can't even get it here legally, but I'm never buying anything else, personally.

You can't get Lexel in the city legally? We can get it on this side of the bay...