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Old 11-04-2010, 09:04 AM   #1
youcan
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New Shower Grout looks wet after 48 hours

Hi

I just had a new shower installed - marble floor, ceramic mosaic tile on the walls, glass enclosure. After literally 4 showers I noticed that some parts of the shower still look wet. So I decided to use another bathroom in the meantime. 48 hours later the spots are still looking wet but are not wet to the touch. The contractor told me the shower is bullet proof, however, the grout looks wet and looks dirty.

Its a large bathroom approx 150 sq. ft, shower is 5 by 3, there is a very strong fan that is on timer and is on for 30 minutes during every shower. I wipe the glasss dry after each shower and it is literally a week old shower....

Needless to say I am freaking out. Here are some pictures. I understand from some similar postings that the bottom corner could have been badly sealed, water accumulates there, etc, but one of my spots is smack in the middle of the wall....

I will get all the techy stuff and put it here from the contractor - the reason behind "waterproof" statement but in the meantime I was wondering if anybody had this experience and what did it take in the end to fix it.

BTW, I spent 2 hours with a blowdryer yesterday and managed to dry out a poriton of (1 inch by 1.5 inch). Needless to say very slow and the pictures here are the pictures after 48 hours since the last shower.
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Old 11-04-2010, 09:24 AM   #2
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Quote:
posted by Zouye
I just had a new shower installed - marble floor, ceramic mosaic tile on the walls, glass enclosure. After literally 4 showers I noticed that some parts of the shower still look wet. So I decided to use another bathroom in the meantime. 48 hours later the spots are still looking wet but are not wet to the touch. The contractor told me the shower is bullet proof, however, the grout looks wet and looks dirty.
We'll need a little more info from you on this installation to determine what the problem is. You mean glass mosaic tile on the walls from what I can see not ceramic less you used a combination.

Ain't lookin too bulletproof from here, was bulletproof sealer used>...lol
Maybe he meant it can stop bullets, but is it gonna stop moisture for instand from going through the grout...lol Was your contractor a tile contractor on general contractor. What type of waterproofing was used, materials on the walls, cement board etc. What kind of grout was used and was it sealed if Epoxy grout was not used?

This should start the ball rolling..... My first guess if the grout is not drying, it wasn't sealed. That's juss a guess we need more info and whatever the problem is I hope you notified the contractor cause it is his baby. Did you have a contract? We will have to take your pics and info and do some forensic tile investigation, we got a good team here. You came to the right place.
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Old 11-04-2010, 09:36 AM   #3
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Zouye,

Welcome to the forum.

By now you know the grout and tiles are NOT waterproof. Marble is fairly soft and will absorb water pretty easily, which is one of the many reasons I try to discourage using marble in a shower.

Your shower may very well be leak proof. Without evidence to the contrary, we can't really say one way or the other at this point. Were the walls covered in an orange fussy looking fabric or painted green or red before the tile went on?

Sealing the grout will not stop the water penetration you are seeing.

We could use more facts ma'am. Just the facts.
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Old 11-04-2010, 12:02 PM   #4
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Thank you for your responses.

Details as promised:

Everything was handled by our contractor, who is supposed to pass by today.

The materials are the following:
- The shower floor is a carrara marble fish scale pattern.
- The walls are mosaic sheets made of glass, ceramic tile and marble squares.
- The side wall has an insert made out of the square mosaic and the rest is a porcelain glossy tile.

The shower was laid out the following way:

- Membrane is at theback. In front of it we have the special cement sheets (don't know the name). Then on top of that the joints were taped in, and a Mapei membrane was applied (it's blue and is applied using a trowel, not the orange membrane you see on home renovation shows, we were told this was really good). Then on top of that the tile was installed. After the tile was installed and the grout (Mapei as well) had plenty of time to dry (several days), everything was cleaned twice and let to dry. After that 2 layers of Aquamix liquid tile sealant were applied, with drying time between each coating (the sealant had been provided by the contractor, even though it's not necessarily quite the best stuff around from what I've heard). It took a while to get the door ready so the shower had plenty of time to fully cure before we started actually using it (we're talking more than 2 months).

Everything in the shower was laid down sloped in as it should, toward the drain (the concrete itself, not just the tile), the installer paid a lot of attention to that part, from the concrete base to the side tile where the door is located. The water does not sit or puddle anywhere really.

The tile that looks wet is dry to the touch, howeve it looks wet. The thing is that if sealant was missing on those spots, it would have dried about 36 hours, but that's not the case, or not what it looks like. I wanted to put another two coats of sealant but I was waiting for the grout to dry out first. Since it takes so long, I wonder if it's really the issue here.


CabotAndRowe.com, I know about marble on the shower floor but have you seen? It's fish scale!!!! Could not resist and the salesguy told me that it is often used for shower. Totally gullable, my fault, but could not return the tile after I found out that WHITE carrara marble is the WORST for staining, so I switched to colorless shampoos and shower products.

BTW, the wet looking grout in the corner and in the middle of the wall are both on the same side of the shower (where all the plumbing is located).
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Old 11-04-2010, 12:08 PM   #5
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One more thing I forgot to mention. When the grout was originally installed and was dry, there was no discoloration, everything was uniform and very pretty.... Now.... well, the picture is worth a thousand words.
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Old 11-04-2010, 12:21 PM   #6
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zouye,

waterproofing was prolly mapelastic, blue liquid

something isn't adding up here, grout was sealed twice. Is this only happening in certain areas where the grout discolored and doesn't seem to dry out?

I see the one area is near the mixing valve, but the other is at the floor.

Let us know what your contractor tells you, he may be able to shed some more darkness on the situtation.....lol No I hope he has an answer since he said the installation was bulletproof. That shower ain't looking bulletproof, more like someone shot a bullet through it and water is seeping in or from behind, this is a fairly new shower. I wonder if there is some problem at the mixing valve. Does that whole area round your cold/hot mixer get wet, not from the shower head am I talking about either. Just stabbin in the dark here.

Let us know what the bulletguy says Oops.. bulletproofMan
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Old 11-04-2010, 02:16 PM   #7
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Yes, I love the floor tile too ! I can see why you picked it.

Thanks for the details. They helped a lot. It sounds like your contractor is a good guy.

There may be a solution;
1- let it dry out as much as possible
2- scrape out the grout in the offending areas
3- put a fan on it to dry it out completely
4- new grout
5- new sealant
6- you know this is going to happen again eventually right ?
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Old 11-04-2010, 03:29 PM   #8
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Paul,

thank you for your suggested solution, but I have a question - why will it happen again? Is there anything to be done so that it won't happen again? Is it even possible to remove grout on mosaic?

Bulletproof man is with the husband as we speak.... can't wait to hear what he says on all that... will keep you updated.
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Old 11-04-2010, 04:15 PM   #9
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Since you have marble it will happen again. That's just the nature of natural marble. You can switch to epoxy grout, which will not change color, but that will not stop the stone from getting wet. Kinda mute and you'll run the risk of scratching a tile getting all that old grout out.
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Old 11-05-2010, 09:41 PM   #10
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when you say "membrane at the back" did he put a pan liner in, then a roll on membrane on top of that...
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Old 11-11-2010, 09:42 PM   #11
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the wet look at the on/off valve could be a slow leak at the shower head or along that line up, could be collecting some water at on/off and soaking through at some point. The discoloration in the corner is because water is getting through your grout, although grout is not water proof it should dry within a few hours of a shower. Ask your Tile installer/contractor to remove all caulk and recaulk the whole shower using 100% silicone and just in case remove the plate at the on/off handles and caulk the perimeter of that using the same caulk, the leak there could be something as simple as water penetrating that plate and soaking at the end of your tile and backer board. Either way, If the shower is properly properly caulked and no water can get through any inside corners then the water should have no place to go other than down the drain. I have had to repair several shower floors that had the same problem, in every case it was water building up between the liner pan and the portland cement poured shower floor. let me know if your contractor will take any action and if so what he does and the outcome, im interested to know
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