I agree with Fred and Hector. There is probably and integrity (weep holes, setting material, grout and/or the stone) failure somewhere.
Sent from Bob Murrell's iPhone
Also keep in mind that steam is a vapor and most impregnators are vapor permeable.
On Thu, Mar 8, 2018 at 11:09 AM, <csantospago@gmail.com> wrote:
Interesting Hector. All I know is this material is like a wick on any unpolished surfaces so it’s possible the little edge above the grout line is pulling in water. Especially since it’s a steam shower.
They use the same dolomite material on some vanities in a condo complex in Boston. The union guys broke a few of them and I had to go replace them. I used 100 % silicone to secure them to the cabinet and the areas where the silicone was stayed dark for three weeks.
Trying to give them an option other than removing the tile.
Thank you, Chris
Sent from my iPhone
> On Mar 8, 2018, at 9:43 AM, hector castillo <hectorcastillo@comcast.net> wrote:
>
> I have seen pin holes in this type of grout.
> This lets water in. I had to heat removal a floor 2 years ago in a shower floor what a pain in the butt.
> We installed non sanded grout. For the tight grout joint this fixed the problem. I don’t know if this fix will fix the problem.
> Hector Castillo
>
> -----Original Message-----
> From: sccpartners@stoneandtilepros.simplelists.com [mailto:sccpartners@stoneandtilepros.simplelists. ] On Behalf Of csantospago@gmail.comcom
> Sent: Thursday, March 8, 2018 6:34 AM
> To: sccpartners@stoneandtilepros.simplelists.com
> Subject: Re: Dolomite tile shower with epoxy grout
>
> The grout was Laticrete spectra-lock epoxy grout bright white. I did not do the installation but I know that’s what they used
>
> Sent from my iPhone
>
>> On Mar 8, 2018, at 9:29 AM, hector castillo <hectorcastillo@comcast.net> wrote:
>>
>> Please show a photo of the grout that was used.
>> Hector Castillo
>>
>> -----Original Message-----
>> From: sccpartners@stoneandtilepros.simplelists.com
>> [mailto:sccpartners@stoneandtilepros.simplelists. ] On Behalf Ofcom
>> csantospago@gmail.com
>> Sent: Thursday, March 8, 2018 5:59 AM
>> To: Sccpartners Email Support
>> <sccpartners@stoneandtilepros.simplelists.com >
>> Subject: Dolomite tile shower with epoxy grout
>>
>> Partners,
>>
>> Got called to this job about a month ago to resolve the staining issue
>> in this steam shower. I tried using a poultice with TSP and another
>> section I used 40 volume peroxide cream.
>> Both products worked but the peroxide cream was much quicker and
>> easier to use. Also the poultice left the area stained for more than a
>> week while the cream dried up within a day.
>> Over a few weeks we did about 3 to 4 Applications removing all the
>> staining and then we sealed everything with an impregnating sealer from M3.
>> I just got a text from the homeowner and the staining has reappeared.
>> I know that dolomite is a very sensitive material and probably should
>> not be used in a shower setting. Not sure if the epoxy grout is the problem.
>> Any thoughts from anybody?
>> Thank you,
>> Chris Santospago
>> Restoration by design stone
>>
>>
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Frederick M. Hueston
www.stoneforensics.com
office 321 514 6845
Stone Inspection and Troubleshooting seminar June 11-14, Melbounre FL
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