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Bathroom tile caulk?

Old 01-12-2015, 07:28 PM
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Default Bathroom tile caulk?

The color matched silicone caulk I purchased with the tile and grout has lasted about a year. Lost adhesion in several areas. I even used the backer rod for larger gaps.
I don't want to do this again, what has the best adhesion and mold resistance? I no longer care about color, white will do.
I used 5200 around some exterior doors in 07 and it has held tight, but wrinkled as it dried over the years, and I believe it could attack the acrylic shower pan.
Old 01-12-2015, 09:19 PM
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What type of tile? The guy who owned my wife's condo before her used silicone on marble and now I can't get anything to stick on that rental.

I usually use Phenoseal when recaulking tub/tile joints.
Old 01-13-2015, 05:28 AM
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You had to use backer around a shower door? not good. I've installed 100's of shower doors in another life and never had anything larger than maybe thickness of a nickel.
Old 01-13-2015, 05:33 AM
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I'm a painter and I've tried everything!
5200 yellowed badly and eventually failed.
All the products sold for this purpose will eventually give you the same results.
Failure in a year or less. I found 1 thing that is working so far ( about 3 years now)
It's a product called NP1 designed as a commercial expansion joint calking. I think its a urethane based product. It's not easy to use. Denatured alcohol to clean up. And like 5200 takes a long time to cure. It's the only thing I've had any real success with.
Calking Tubs and showers is an age old problem, kind of like what to seal a mahogany deck with. Whatever you do a clean, clean, clean surface will help.
Good luck with it.
Old 01-13-2015, 05:54 AM
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Silicon caulk is vastly overused. It often creates more problems than it cures, and creates a mess in the process.

Frankly, polyseamseal works well in many cases..even the clear is decent stuff. It's paintable, and won't stain marble.
Old 01-13-2015, 05:59 AM
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Get a grout hook,remove all loose grout,clean up the old silicone with kerosene.Re-grout properly.Best way to make chicken salad out of chicken shit.
Old 01-13-2015, 06:04 AM
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Originally Posted by redneck joe View Post
You had to use backer around a shower door? not good. I've installed 100's of shower doors in another life and never had anything larger than maybe thickness of a nickel.
Not a shower door, new tile walls and and acrylic shower base, install sheet said 1/4" gap bottom of tile to shower base splash rim. 1/4 gap needs backer rod.
Old 01-13-2015, 06:25 AM
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Not to take away from the OP, but I'm having the same dilemma, garden tub with a faux marble surround. I have cleaned out all the old caulk up to 6" from the tub surface, remaining caulk is ok. The marble is uneven in places along the top of the tub, maybe up to 1/4" gap in a couple locations. Should I (1) remove all the old caulk up to the top of the surround and (2) is there any need to completely fill in the voids at the widest gaps? I've never heard of using kerosene to remove the old silicone, is there another option as I have no need for leftover kerosene.
Old 01-13-2015, 06:48 AM
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Grown men talking about bathrooms and cocks.. DISGUSTING!
Old 01-13-2015, 06:53 AM
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Originally Posted by hanson View Post
Get a grout hook,remove all loose grout,clean up the old silicone with kerosene.Re-grout properly.Best way to make chicken salad out of chicken shit.
What is a grout hook? I have the same issue.
Old 01-13-2015, 07:16 AM
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As northcoast said NP1 is the best product to use in a bathroom.
Old 01-13-2015, 07:33 AM
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For wiping old silicone residue from surfaces, I use a product found at auto paint stores. It has several names but here it is called "final wipe" or "surface prep". Auto paint shops use it to remove wax and silicone from primed surfaces just before final paint.
Old 01-13-2015, 07:46 AM
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AS SEEN ON TV:

Flex Shot Rubber Sealant Bonds, Caulks and Seals

Flex Shot As Seen On TV Offer

Check Out This Great Double Offer! Get 2 Cans of Flex Shot and 2 Extension Tubes for Only $19.99, Also Receive a Bonus Can of Flex Seal Absolutely FREE! If you call in the next 20 minutes.
Flex Shot is the easy, neat and clean way to make repairs around your home. Flex Shot comes out nice and thick, it can cling to any surface, then it turns into a stretchy rubber seal that is virtually indestructible!
Old 01-13-2015, 08:15 AM
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Best caulking is Vulcum 116 used by sheet metal and roofing industries
Old 01-13-2015, 08:17 AM
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Originally Posted by fishingfun View Post
AS SEEN ON TV:

Flex Shot Rubber Sealant Bonds, Caulks and Seals

Flex Shot As Seen On TV Offer

Check Out This Great Double Offer! Get 2 Cans of Flex Shot and 2 Extension Tubes for Only $19.99, Also Receive a Bonus Can of Flex Seal Absolutely FREE! If you call in the next 20 minutes.
Flex Shot is the easy, neat and clean way to make repairs around your home. Flex Shot comes out nice and thick, it can cling to any surface, then it turns into a stretchy rubber seal that is virtually indestructible!
I can't tell if this is serious or not ;?
I've tried some of the Home Depot spray on rubber sealant( like the guy in the tin boat on tv)
With mixed results. Mostly did not perform as advertised, but it may have some value on certain applications. I'd be a little leery of calking a shower/ tub with it.
Old 01-13-2015, 08:21 AM
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valcum 116
Basic Uses

Designed for use on poured and precast concrete, masonry work, window and door perimeters, and similar types of construction joints.
For use on exterior applications only. Do not use this product inside an occupied building even if there are no occupants present during use

Looks like exterior only?
Old 01-13-2015, 10:16 AM
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Just remember, if the gap is too large, you may need a black calk.
Old 01-13-2015, 01:04 PM
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same reccomendatinos for cultured marble?
Old 01-13-2015, 01:10 PM
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I am having problems with caulk cracking and splitting in my house and have been doing some research on the best products to use. I just ordered Sashco Big Stretch. A lot of positive reviews online and some Amazon reviews called it the Rolls Royce of caulk products. Its not cheap, but going to give it a shot.
Old 01-13-2015, 01:14 PM
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Np1 in the bathroom no not what it's designed for. Need to go with Dow Corning 786 mildew resistant silicon designed for that type application.

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