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Old 10-08-2018, 10:35 AM   #1
Sendero
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Handy man screwed up? Please advise.

Searched this site and am now concerned with his work. New as of yet unused shower floor is sliced stone pebble tile from HD which wife likes but he used Polyblend non-sanded grout w/ Grout Shield not water for these wide joints and with a slope to drain which is about normal no extra slope I would say. It has lots of pockets everywhere to hold water, some 3/16" deep. Also the tiles are now very dull, should have been sealed first maybe, now need polishing?

The wider joints, up to an inch have hairline cracks in the joints.

He said he would fill the ponds in with sanded grout flush to the pebbles and that will work but am concerned as lots of areas are only 1/8" or less deep. Should we let him try this out or tear it out and search for someone who knows pebble tile?
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Old 10-08-2018, 10:40 AM   #2
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I would search for somebody that knows what they're doing because he shouldn't have used that grout for those wide joints and you can't just add more grout over the old grout, it's not going to stick.

You didn't mention how much of the shower he did, but I would be concerned about more than the cracking grout and bird baths.
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Old 10-08-2018, 12:15 PM   #3
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Unsanded grout is good only up to 1/8". It should never be used with pebbles.

What was the waterproofing that was used? I ask because I might recommend taking up the pebbles, filling in the low spots, and starting over.
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Old 10-08-2018, 01:17 PM   #4
Sendero
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Sealer

Gents, thanks for the feedback, I'm feeling better.

Sealer was mixed in place of water in the powdered Polyblend, called Grout Shield by Miracle Sealant Co. Nothing put on top.

Also measure slope, 1/2" in 12".
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Last edited by Sendero; 10-08-2018 at 01:19 PM. Reason: spelling
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Old 10-08-2018, 03:41 PM   #5
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I'll echo Kman, how was your shower waterproofed and constructed from start to finish?
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Old 10-08-2018, 05:12 PM   #6
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Peter, the sealant you're referring to is not considered waterproofing. If that's all that was used, you have a bigger problem than a couple of birdbaths in the floor.

There should have been a PVC liner somewhere in the construction of your shower, or a surface-applied membrane right under the tile.
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Old 10-08-2018, 05:28 PM   #7
Sendero
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Procedure

Original shower was a pan on concrete so concrete base. Talked to handyman and this is what he said and I checked the bags/containers:
- Mapei 4 to 1 mud bed mix, I think to get the 1/2" in 12" slope
- Red Guard membrane
- Simple Set pre-mix thin-set, I think 1/4" thick
- Grouted Shield by Miracle Sealant Co. replaced water in mixing the Polyblend non-sanded.
The sliced stone was only the floor, new walls are ceramic tile and look good.
Job stopped when I saw the cracks and "bird baths".
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Last edited by Sendero; 10-08-2018 at 05:38 PM. Reason: added detail
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Old 10-08-2018, 05:31 PM   #8
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Hi Peter, welcome. Totally agree with the others.

What kind of moisture barrier was used behind the wall tiles? What were the wall tiles stuck to?
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Old 10-08-2018, 05:35 PM   #9
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If the only waterproofing layer on the floor is Redgard, I wouldn't pull anything up to try and fix it.

I'm not saying it wasn't done correctly, but it would be unusual to have someone who's not very experienced with building a shower to do one as you described above, and it be done properly.
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Old 10-08-2018, 05:37 PM   #10
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Did he use the Simple set thinset on the shower floor? Read the limitations on this link. Right side of page.
https://www.custombuildingproducts.com/TDS/TDS-182.pdf
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Old 10-08-2018, 05:48 PM   #11
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Appreciate the help!

He only had the Simple set on the receipts and thats all he mentioned.
Wall tiles had Hardibacker (?) and the Simple set.
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Old 10-08-2018, 06:08 PM   #12
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I'm sad to say, that from what I am reading, you should not be feeling better. I would add that the chances that he proper installed the drain are probably quite small. And I would guess, without knowing, of course, that there is no moisture barrier behind the Hardi on the walls. I think your problems go wekk beyond using the wrong sort of grout.
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Old 10-08-2018, 06:37 PM   #13
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So if there's no other type thinset on the receipt then I suppose he used Simple set on the shower floor too. Is that correct?
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Old 10-08-2018, 06:48 PM   #14
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Simple Set is not real thinset. As linked above, not suitable for wet areas besides walls and tub surrounds and not for use over waterproof membrane.
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Old 10-08-2018, 06:59 PM   #15
Sendero
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Disaster

I will verify in the AM but today the story is only Simple Set, walls and shower floor. Sounds like not only the floor but the walls have to come out?
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